Chainsaw Partner 370 instruction manual

Chainsaws Partner

Saw equipment from the Partner brand is a good choice for those who need to quickly and easily cut dry branches or old trees, prepare firewood, and thin out bushes. This Swedish company has been on the garden equipment market for almost thirty years, producing high-quality products since 1990.

Partner chain saws have proven themselves to be excellent in simple construction work and during various types of work in farming or forestry.

The main production is concentrated in Sweden. Subsidiaries are located in Russia and China, whose products are most common. Undoubtedly, preference is best given to the Swedish Partner models. They can be distinguished by two company seals on which the company logo is embossed. In addition, on the Partner chainsaw itself, on the box and on the original instructions there is a three-stage protective hologram.

Chainsaw Partner 738

Chainsaw “Partner” P350XT

An incredibly easy-to-maintain and operate model that will eliminate any unauthorized household or construction work.

Advantages:

• compactness;
• functional richness;
• lightweight body;
• chrome plated cylinders and pistons;
• electronic ignition;
• double acting chain emergency stop brake;
• simplified system for tensioning and changing the chain blade;
• easy start thanks to built-in primer;
• advanced filtering mechanism "CCS";
• comfortable handles for long working shifts;
• automatic oil supply to the chain and bar;
• anti-vibration mechanism;
• it is unpretentious in maintenance, and repairs can always be done at home along with original spare parts, the sale of which is no less active.

About the company and its products

The Partner company was founded in Sweden in 1949 as a manufacturer of mining drills, but already in 1954 a new development - a chain saw - gave impetus to the creation of a brand called “Partner” and the release of a line of electric and chain saws of the same name.

Using the example of Partner gasoline saws, one can trace the correct and consistent implementation of innovative solutions, thanks to which the Partner chainsaws received their first advantages: a heated handle, a chain brake, and much more. The company began producing chainsaws as a separate series of manual mechanisms in 1958, and the distinctive feature of this equipment immediately became reliability, ease of use and high productivity with significant energy savings.

Keyless tension system

It began to be used relatively recently, it is considered new, if not advanced. It differs from the classic nut in the following:

• another tensioner mechanism;
• lack of external tightening nut;
• adjustment without additional tools.

Instead of a 13mm spanner nut, the lid has a wing nut (rotary cap) with a handle for hand tightening. It also has a nut, but it is hidden inside. Instead of an adjusting screw for a screwdriver, tensioning in this system is done using a tension wheel (adjustment handle).

Instead of a gear shaft there is a sprocket and a tension washer.

This system also has disadvantages:

• the mechanism itself is more complex than a traditional nut;
• installation of a cutting set causes additional problems, because makes it difficult to pair all the parts in the right order;
• the adjustment stroke is shorter, a slightly stretched chain will still serve with the traditional tensioning system, here it will sag and become unusable.

Adjusting the ignition of the Partner 371 chainsaw

Repairing the ignition of a Partner 371 chainsaw in most cases involves adjusting the gap between the flywheel and the ignition coil. Too much clearance prevents the spark from forming, which is required to ignite the fuel mixture.

Before adjusting the ignition gap, you will need to unscrew and inspect the spark plug in the chainsaw. Very often, a thick layer of carbon becomes an obstacle to the formation of a spark. If everything is in order with the spark plugs, you need to remove the cover under it and inspect the position of the ignition coil and flywheel. To adjust, install a special template, 0.2 mm thick, between the flywheel and the reel. If you don’t have one at hand, you can use a regular pocket calendar or a bank card. By turning the screws you will move the flywheel closer to the spool and set the required gap between both parts.

How to disassemble a chainsaw

Repairing a chainsaw can only be carried out after the tool has been disassembled. It must be done as carefully as possible, and it is recommended to clean each part with detergent and dry thoroughly. Only after this is it possible to assemble the tool.

How to remove a star

To access the chainsaw sprocket you need:

1. Remove the crankcase cover, chain set and bar, and then the air filter.
2. Unscrew the spark plug and insert the piston stopper instead.
3. Unscrew the clutch, first installing a puller in the hole for the universal key. This will allow access to the sprocket, after which the latter can be removed.

After the faulty part has been removed, the sprocket can be replaced with your own hands.

How to replace an oil pump

Removing the oil pump occurs in the following sequence:

1. Remove the chain set, and then unscrew the bolts that secure the guide chain to the body.
2. Now you need to remove the pump and divide it into two parts, then remove the gasket and put a new one in its place.

If such actions do not correct the problem, then the oil pump must be replaced. All assembly steps must be performed in reverse order.

Features of application

1. The Partner chainsaw provides a thin, high-quality sawing cut.
2. Structurally, it is possible to quickly install the tire and tension the chain without the use of special equipment.
3. Thanks to the optimal balancing of the design and comfortable grips, the chain saw is extremely ergonomic in operation, which ensures stable performance of the operator.
4. It is not for nothing that the Partner P360S chainsaw is called the latest generation household model - thanks to its high performance characteristics, the tool is suitable for collecting firewood, constructing wooden structures, carrying out sanitary and preventive work in the garden and park.
5. Despite the budget price of the Partner chainsaw, its design uses technological solutions typical for more productive models of the semi-professional category.
6. Cooling of the chain during operation is carried out automatically under pressure.

Review of top chainsaw models Partner

For household needs, chainsaws Partner P340S, P350S, P360S are most often chosen. The tools have a power of approximately 2 hp, are lightweight, modest in size, convenient and practical. Next in popularity are the models P842, P740, Partner 352, and the Partner 351XT CHROME chainsaw.

Chainsaw Partner 351

Chainsaws Partner 420ХТ, 421ХТ with a power of 1.7 kW are in demand. More productive model 401 with a 2.3 hp engine. belongs to the semi-professional class. When performing complex sawing functions, many craftsmen prefer the Partner P361S 4.08 hp chainsaw. with improved starting, stable engine operation for a long time.

Chainsaw Partner 421

Chainsaw Partner 371

One of the popular semi-professional models in the family of chainsaws. Structurally, it is an improved version of the 370 model.

Chainsaw Partner 371

Advantageous features of the chainsaw:

• accelerated response of the automatic emergency stop system;
• improved two-stage air purification that enters the engine;
• optimal economical dosing of lubricant;
• performing sawing in various directions - longitudinal, transverse, diagonal;
• the possibility of using the saw for processing wood, performing installation and construction work.

Specifications

Features of operation

Thanks to the use of high-quality components and materials, the capabilities of the Partner 371 chainsaw are significantly expanded - the tool is able to work for a long time in intensive mode. Based on the 371st model, a modification of Partner P371XT Chrome with a power of 2.2 hp, with a booster pump and a special vibration damper was developed.

Petrol saw (chainsaw) Partner P 371 XT Chrome

When working with a Partner chainsaw, owners should be extremely careful and strictly follow the safety instructions - personal and for others. It is prohibited to use the saw for purposes other than its intended purpose or to exceed the permissible loads. Any violation of the instructions is extremely dangerous for the operator and can lead to damage to the saw and accidents.

The lineup

In their price range, Partner branded chainsaws are in high consumer demand. The presented review shows the characteristics of models with high ratings.

Partner P340S

The model, priced from 6,000 rubles, is focused on performing the following work:

• for the preparation of firewood for a stove or fireplace;
• maintenance of garden and forest park areas;
• crowning woody plant decorations.

With a moderate cylinder volume of 35 cm, the two-stroke carburetor drive develops power up to 1.0 hp.

The traction parameters are sufficient to drive a 14-inch professional-level headset set. Autonomous operation is ensured by a supply of fuel and chain lube in supply tanks with a capacity of 300 and 150 ml.

The 4.5 kg tool is well balanced and the body shape provides a secure grip. Operator comfort is facilitated by low vibration levels and control elements located on the rear handle.

Partner P350S

The commercial success of the P340S model initiated the development of a chainsaw with improved traction and performance properties. The next saw in the lineup received a 38 cc power unit with a power of 1.96 hp. and a productive 410 mm professional-grade headset.

The selling price of the new development increased to 6,800 rubles, weight - to 4.7 kg. The partner saw of the P350S series has been improved in terms of increasing the reliability and service life of the clutch mechanism and the oil pump drive of the automated lubrication system.

The tool differs from analogues of the same type:

• the presence of semi-automatic control of the carburetor air damper;
• additional vibration protection of the rear handle.

Partner 351XT CHROME

In chainsaws of the Partner Chrome series, the service life of petrol engine drives is extended by covering the inner diameter of the cylinder with a wear-resistant chromium-nickel layer. The 351XT CHROME performs at semi-professional levels.

A full-fledged drive of a professional headset with a length of 400 mm is realized due to the traction properties of a 38 cc, two-stroke carburetor engine with a nameplate power of up to 1.9 hp. The battery life has been increased by increasing the fuel tank volume to 380 ml.

The use of light metals allowed the model to remain in the same weight group of 4.7 kg. The design of the tool is supplemented with an inertia-type emergency brake activator and a starting primer. The latest price of the 351XT CHROME model is fixed at 7,700 rubles.

Partner P352XT

The model has been modified in terms of increasing productivity, increasing the power of the 39 cc economical carburetor drive to 2.15 hp. The engine thrust reserve is sufficient for full operation of a 400mm headset.

The operational advantages of the tool:

• simplified refueling;
• the presence of a booster pump and a reliable electronic ignition system;
• CCS system, which stabilizes the traction properties of the drive and extends the time intervals between maintenance of the air intake filter.

A design feature of this chainsaw is a special design of the fan impeller, which protects the air filter from sawdust.

Partner P360S

The characteristics of this model positioned by the manufacturer are confirmed by the assigned European certificate of conformity. A household chainsaw costing from 5,000 rubles and weighing 4.8 kg is driven by an engine with a cubic capacity of 40 cm3 and a power of up to 2.1 hp.

The set of branded sawing equipment includes a productive and wear-resistant 450 mm tire and a wear-resistant low-profile chain. Problems with starting a cold power unit are eliminated by an easy start mechanism such as SoftStart.

The ability to set up standard sawing equipment without tools and install an air intake with combined air purification helps reduce forced downtime.

Partner 370

Compact, lightweight and comfortable in everyday work, a small-displacement 36 cm3 chainsaw with a 1.9-horsepower drive is indispensable in everyday life, and is also used as standard equipment for scientific expeditions and tourist groups.

The tool can be successfully used:

• for sawing fuel, stove or fireplace wood;
• in home construction and in tree care work in forested areas.

The tool, weighing less than 5 kg, is especially convenient for performing sawing work during the construction of high-rise wooden structures and crowning tall trees.

The volume of the consumable tanks is 400 and 300 ml, respectively, ensuring long-term operation in autonomous mode. Depending on the level of complexity of the planned work, the tool can be equipped with 14- or 16-inch headsets.

Partner 371

The certified universal tool is a further developed and technically more advanced version of the Partner 370.

With the same power-to-weight ratio, the new model is equipped with:

• more effective dosage of chain lube supplied to the cut;
• accelerated activation of the emergency stop mechanism;
• centrifugal circuit for cleaning the air entering the engine.

Using the appropriate chain sharpening angle, the chainsaw can be used for transverse, longitudinal and more complex diagonal sawing, commercial and construction wood. During operation, the specified speed on the chainsaw is set by lightly moving the gas trigger.

Partner 391

The functionality of a household-grade saw is designed for a wide range of household and construction work. The tool is powered by a 45 cc derated engine, developing power up to 1.7 hp.

The tool has an easily removable cover that allows you to clean the chainsaw, tighten or replace the saw chain without using a special wrench.

The recommended tire length for standard work is 16 inches. The latest selling price for this model is fixed in the range of 8800-9200 rubles.

Partner P842

The household version of a powerful and durable home saw is equipped with a strong drive, traditional for the Partner 2.1 chainsaw model range. The cylinders of the power units of this series received decompression valves and wear-resistant chrome plating. In terms of durability, the drive sprocket of the saw set has been improved.

The design is complemented by an EcoBoost exhaust gas purification system and a reinforced drive for the standard oil pump. The operational advantages of double air purification and the efficiency of the proprietary innovative vibration damper are also involved.

Chainsaws Partner. Review of the brand's lineup

Partner chainsaws are called non-professional equipment for demanding owners. And indeed it is. At a fairly budget price, the tool is distinguished by high technical characteristics, stable operation, reliability, and good maintainability.

The Swedish company Partner is a pioneer in the production of motor chain saws. For almost 70 years, the Patriot brand has been known all over the world for high-quality, reliable tools. Worldwide popularity and unprecedented commercial success allowed the brand to successfully develop throughout its entire activity, constantly introduce innovations into the production cycle, and significantly expand its range.

By the end of the nineties, the company mastered the production of almost the entire range of garden tools and equipment.

Since 2006, the Partner brand has been part of the AB Husqvarna concern, which has several factories in different countries of the world: Sweden, Italy, Norway, China, USA, Brazil.

Partner chainsaws are intended for domestic use: cutting wood, logs, preparing firewood, performing garden work, building wooden structures. Chain saws are distinguished by their light weight, modest dimensions, sufficient power, ergonomics, and a high degree of safety for the working operator.

Owner reviews

The gas-powered saw of the Partner P842 series is one of the most successful models in terms of its main parameters. The budget cost of the tool affects everything, including the quality of materials and the durability of the component equipment. However, for home use the option is the most optimal. For a new tool, preliminary setup is required. Only in this case can its functionality be used 100%. Leva

The new Partner chainsaw did not work well from the first day. The engine started poorly, stalled when the load was applied, and idled unstably. After two unsuccessful paid adjustments, the service center replaced the carburetor under warranty. From that moment on, my problems were over, the saw returned to its normal operating level. The engine is excellent, the chain had to be replaced ahead of schedule after several cubes of sawn wood, the tire is still holding up. And yet, in cold weather the oil pump practically does not work; you have to dilute the oil with gasoline. Petr Alexandrovich

Basic malfunctions and their elimination

The main malfunctions that you can fix yourself and how to eliminate them are described in detail in the “Operating Instructions”.

Engine won't start

In this case, it is necessary to check the gap between the spark plug electrodes. It should be 0.5 mm. At the same time, the electrodes need to be cleaned of carbon deposits. In most cases, this is enough to get the engine running again. Starting is also affected by contamination of the carburetor, fuel and air filters. After washing them, the engine, as a rule, stops being capricious. On the pages of the site and the Internet there are many photos and videos on restoring engine performance.

The engine does not develop power (stalls under load)

To the previously listed reasons, one more is added - the carburetor needs to be adjusted or the muffler needs to be cleaned. Adjustment is carried out using adjusting screws. Detailed information on this issue can be found on the website. The video shows the process of detecting and repairing a chainsaw failure.

Broken starter cord

Partner 350 is found quite often on chainsaws, and on all chainsaws, so Partner 350 is no exception. This problem is not difficult to fix yourself. After watching the video, it becomes clear how to replace a broken starter cord.

Open circuit

Mainly due to its overheating during operation. The cause of overheating is a lack of lubricant supply or oil channels clogged with dirt. First of all, all oil channels are cleaned, the inside of the chainsaw in the area of ​​the drive sprocket and the tire groove is cleared of debris (sawdust). Only after this can a new chain be installed. If a problem is detected in the operation of the oil pump, the saw must be repaired in a specialized workshop.

Evaluation of design parameters

The manufacturer's official website, located on the Internet, provides an overview of the technical characteristics of the entire model range, which allows the buyer to choose a chainsaw that meets all the parameters of the specific characteristics of subsequent operation.

Users note:

• efficient operation of quick start, fuel supply, electronic ignition, vibration compensation and emergency stop systems;
• Partner chainsaws use the advantages of automated lubrication supply schemes into the design of the saw set;
• The Partner household saw is characterized by a high level of maintainability.

Using the recommendations in the operating instructions, the tool owner can adjust the carburetor, saw chain tension, or perform other simple repairs with his own hands.

Why does the Shtil chainsaw not start when it's hot? Why does a chainsaw have trouble starting?

Main reasons:

• fuel and air filters;
• reduced compression;
• carburetor adjustment;
• spark plug;
• ignition coil;
• gap between the ignition coil and the flywheel;

Let's look at each reason in more detail.

Fuel and air filter

Contamination of the main filter elements of a chainsaw negatively affects its operation.

For example, a dirty air filter will not provide enough air to the carburetor, which will affect the quality of the air-fuel mixture and normal engine starting. A dirty fuel filter will make it difficult or even cut off the flow of gasoline to the carburetor and make it impossible for the engine to operate.

Reduced compression

One of the common cases of difficult starting of a chainsaw is wear of the CPG (cylinder-piston group).

As you know, for a chainsaw to start normally, compression must be present in its engine. It is necessary for normal compression of the fuel mixture in the engine cylinder, and it also affects the operation of the fuel pump.

During the operation of the tool, the compression value drops and the chainsaw begins to have difficulty starting.

The reasons for the lack of compression or its decrease may be natural, because The engine wears out during operation. Problems can also be caused by a serious breakdown, for example, a scuffed CPG, or a broken piston ring.

A sign of low compression is weak starter resistance when starting. With reduced compression, a decrease in the power of the chainsaw is observed, which negatively affects its performance. The problem is eliminated by replacing the piston rings, or the entire CPG.

Carburetor adjustment

Incorrect carburetor adjustment will cause the chainsaw to not develop full power. It will be difficult to start, or not start at all. Carburetor settings directly affect the quality of the air-fuel mixture, which is necessary for normal starting and further operation of the engine.

If the carburetor is incorrectly adjusted, there will be more or less gasoline in the fuel-air mixture than required, and the mixture will not ignite even with normal sparking.

Excess gasoline in the mixture is usually called overflow. A characteristic sign of overflow is a wet spark plug, after several unsuccessful attempts to start the chainsaw.

Spark plug

The spark plug is one of the main elements of the ignition system. A spark is formed at its electrodes, and if this element fails, starting will be difficult or not possible at all.

The spark plug may fail completely, or work intermittently or produce a weak spark. Checking the spark plug is quite simple; to do this, you need to unscrew it from the engine, attach it to the cap of the high-voltage wire and, placing it on the cylinder, pull the starter. If the spark plug is in order, the spark will be powerful with a bluish tint. A weak spark with a reddish tint is a sign of a problem. A defective spark plug needs to be replaced.

Ignition coil

The reason that a new chainsaw does not start, or starts poorly, may be the ignition coil. Modern chainsaws are equipped with electronic ignition coils. This part cannot be repaired, and, as a rule, if there is a defect, it is completely replaced.

Gap between ignition coil and flywheel

An incorrectly set gap between the flywheel and the ignition coil contacts affects the quality of spark formation, which in turn is responsible for normal starting and stable operation of the engine.

Operating a chainsaw

The cause of frequent malfunctions is that the fuel mixture entering the cylinder is too rich or lean.

According to the operating instructions, the chainsaw is fueled with gasoline of at least AI-92 grade. The oil is chosen for 2-stroke power plants. The optimal proportion is 50:1, i.e. 1 liter of gasoline is diluted with 20 ml of motor oil.

In the absence of qualified maintenance, improper operation, or use of the saw for purposes other than its intended purpose, various damage may occur.

The main malfunctions of the Partner gasoline saw:

1. The engine does not start - check the ignition system.
2. The tool starts, but when you press the gas it stalls - the clutch is being repaired.
3. The engine does not develop full power - the carburetor is being repaired.
4. The saw chain does not spin - change the oil pump.
5. If excess soot is formed, adjust the carburetor.

How to start a chainsaw correctly: instructions

Let's look at the main steps that need to be followed in order to properly start the Stihl chainsaw.

• Before starting, the chain brake must be activated. It is activated by pressing it forward (as shown in the photo).
• Remove the protective cover from the tire.
• If the model has a decompression valve, it should be set to the on position, which will make it easier to start the tool’s motor.

• Press the fuel pump to reduce the number of pumps and make starting easier.
• The combination lever must be turned on in cold start mode. To do this, you need to lock the gas lever and press the combination lever all the way down.
• Before starting the system, it is necessary to ensure a level surface. In this case, the cutting part must be at a distance from the ground, otherwise it will become dull when starting.
• Hold the tool with both hands and keep it on the ground. The left hand should be on the chainsaw handle, and the right hand should be on the starting cable. Secure the tool with your right foot by stepping on the rear handle.

• Gently pull the starter rope with your right hand until you feel strong resistance. Using force, pull the starting rope several times, starting the engine briefly. In this case, to avoid abrasion, it is recommended to pull the cable upwards from the body.
• After a short start, the engine stalls. Now move the combination lever up one click. The lever should take the half-throttle position.

• Pull the starter cord again to start the chainsaw engine.
• When the engine is started by briefly pressing your finger, operate the throttle lever. The combination lever will automatically return to idle speed.
• Without touching the gas lever, move the chainsaw.
• Pull the handle towards you to release the chain brake. The position of the left hand remains unchanged, the hand is on the handle. The chain will be unlocked after the appropriate click.

You can see a detailed description on how to start a chainsaw correctly in the video. Using these detailed instructions, you can gain skills on how to start a chainsaw.

What to do if the chainsaw does not start?

But what to do if all the steps specified in the operating instructions have been followed, but the chainsaw still does not start? Regardless of the manufacturer of the chainsaw - Shtil, Husqvarna, Partner, Ural, Druzhba - a number of general activities can be identified for the tool factory.

Below are practical tips from professionals that have been tested in practice and have proven effectiveness:

1. Don't be nervous and don't try to adjust the chainsaw's carburetor.
2. Set the instrument aside and let it rest. The reason may simply be that the candles are flooded. Give them a chance to dry.
3. Take the instruction manual. Try starting the saw again. There is no need to turn on the saw brake.
4. If this does not help, try removing the cover from the chainsaw body and removing the air filter. This way you can check the cleanliness of the filter and at the same time make the starting process easier.
5. Replace the spark plugs. If it is not possible to install new spark plugs, you can use the old ones by first removing and calcining them.
6. If a strange, pungent odor appears, it means that excess fuel has entered the chainsaw engine. To correct this situation, you need to remove the spark plug and, turning the saw over with the hole down, drain the excess. Without returning the saw to its normal position, sharply pull the starter several times. This way you will ensure that combustion products leave the chamber. The spark plug must be wiped dry and calcined, and then screwed in again and started without installing the filter.
7. It is necessary to check the surface of the piston for the presence of fuel. If you unscrew the spark plug and notice through the hole that it is dry inside, you need to inject some fuel into the chamber using a syringe. The cause of problems in this case may be a blockage that interferes with the supply of fuel to the engine. If the engine can be started with a small amount of fuel, then the thrust will clear the blockage and the problem will be solved.
8. The last two actions can be performed only if the candle is dry.
9. Check the starter for serviceability. It is impossible to start a chainsaw without a starter.
10. Check the ignition unit for spark.
11. Try carefully removing the tool's muffler and starting it without it.

Each saw has its own manufacturing characteristics. You can watch the video on how to start a Husqvarna chainsaw. Follow the instructions carefully and the saw will serve you for a long time.

How to set up a chainsaw

The chainsaw carburetor is adjusted to set the optimal number of revolutions for efficient operation of the tool. This is done by adjusting three main bolts:

• L - is responsible for setting the lower speed;
• H - upper revolutions;
• T - idle speed setting.

Some models have only one screw, the last one.

Advantages and disadvantages

When considering the advantages and disadvantages of the Partner 371 chainsaw, you need to decide which of them are the most critical. Many positive aspects can be common to all chainsaws, while the negative ones are not so important. Therefore, when choosing, you need to rely not on the ratio of “+” to “-”, but on your own needs.

Pros:

• chromium-nickel alloy on the cylinder-piston system prevents the appearance of corrosion and rust, extends the service life;
• easy start button - decompression valve;
• emergency stop of the chain;
• there is a vibration damping system;
• the crankcase is made of magnesium alloy, due to which its strength is increased;
• adjustable oil pump;
• Partner branded air purification systems were installed;
• EcoBoost system - reduces emissions and fuel consumption; increases torque;
• SoftStart system - allows you to start Partner 371 at low temperatures;
• a conveniently designed handle that provides a secure grip and contains the main controls;
• Auto-choke system - controls the engine throttle;
• convenient balance;
• primer for pumping fuel;
• The CCS system increases the service life of the air filter.

Minuses:

• low quality of spare parts and assembly;
• positioning the company as Swedish and many stores keeping silent about the fact that the chainsaw was made in China;
• startup can be quite labor-intensive due to the poor quality of the chainsaw components;
• strong leakage of oil for chain lubrication, positioned by service centers as a normal phenomenon;
• the inability of the saw to cut relatively thick branches and trunks;
• labor-intensive cleaning of the chainsaw from contaminants that accumulate during sawing;
• the most frequently mentioned disadvantages include the low quality of the saw set;
• lack of visual monitoring of fuel and oil levels in internal tanks.

Many who bought Partner 371 complain about the high oil consumption for the chain lubrication system. In fact, this statement is not entirely relevant, since oil consumption depends on the settings set by the owner and on the quality characteristics of the product.

You can clearly see how Partner 371 copes with logs of various thicknesses in the video, in which you can see that the chainsaw cuts thin logs quite easily, while thicker logs require some effort.

Chainsaws Partner – troubleshooting and troubleshooting

Like other household equipment equipped with an engine, Partner brand chainsaws require repairs from time to time. This may be due to improper operation of the saw, or to simple wear and tear of spare parts. Be that as it may, the chainsaw needs to be repaired, and it is quite possible to do it yourself.

How to refuel a Partner chainsaw?

As the instructions indicate, to refuel the Partner chainsaw you should use gasoline of at least AI-92 grade. It must be mixed with oil designed for 2-stroke engines.

The optimal ratio of gasoline and oil for a Partner chainsaw is 50:1, that is, 20 ml of engine oil should be diluted in 1 liter of gasoline.

How to set the ignition on a Partner chainsaw?

If you cannot understand why the Partner chainsaw does not start, then first check the ignition system of your tool. Checking and adjusting the gap looks like this:

• First of all, remove the cover to which the starter is attached. To do this, we recommend using a T27 hex bit, tools included with the chainsaw, and additional attachments;
• Carefully inspect the ignition coil, flywheel with magnets and, especially, the gap between these parts. To do this, use a specially designed gasket;
• Installing the ignition on the Partner chainsaw is done by turning the screws, which brings the coil and flywheel closer to each other.

After completing the above steps, install the starter in place, and start the Partner chainsaw. If the saw starts up, you can screw in the screws securing the cover all the way and continue working.

How to remove the clutch on a Partner chainsaw?

Repairing the tool clutch is often required in cases where the Partner chainsaw starts and stalls when you press the gas. However, not all novice gardeners know how to remove the drive sprocket from a Partner chainsaw. You can do this in this order:

1. First turn the lever and remove the saw chain brake cover;
2. Unscrew the nuts securing the clutch system using the wrench from the Partner chainsaw kit;
3. Remove the clutch from the chainsaw and completely disassemble it. If necessary, replace worn parts and clean the walls of the standard clutch elements.

At first, you will need to pull the starter rope several times before the saw starts. This is required to ensure that the installed spare parts finally fit into their intended places.

How to replace the oil pump on a Partner chainsaw?

If you find that the chain on your Partner chainsaw does not spin, then the cause of this problem most likely lies in the wear or breakdown of a separate pump designed to pump lubricant to the chain. The design of the oil pump includes 2 elements - a storage chamber and a working part. Repairing the pump involves disassembling the mechanism, but it is not recommended to take any actions with its working part. The next steps are as follows:

1. Carefully inspect the inlet and outlet tubes through which the lubricant passes - as a rule, all pump malfunctions are associated with them;
2. If the channels are clogged, then all debris must be removed. simultaneously blowing them with compressed air;
3. If cracks appear on the channels, they need to be replaced;

If, after assembling the Partner chainsaw, the lubricant again does not pass to the saw chain, then the pump will need to be completely replaced.

How to adjust the carburetor on a Partner chainsaw?

Setting up the carburetor of Partner brand chainsaws is slightly different from the procedure with chainsaws of other brands. The difference lies in the markings and meaning of the adjustment screws. For adjustment, the manufacturer equipped the Partner chainsaw with three screws - the left fuel quantity screw, the right fuel quality screw and the “T” idle speed adjustment screw. All these screws are located on the left under the top cover of the chainsaw body. Adjusting the Partner chainsaw carburetor is as follows:

1. Remove the cover and clean the parts underneath;
2. Unscrew both screws fully clockwise and then turn them 1/5 turn in the opposite direction;
3. Start slowly turning the quantity screw until you hear the motor start to run at its highest possible speed. Immediately after this, turn this screw ¼ turn in the other direction. As a result, the Partner chainsaw should hold idle speed steadily;
4. Next, use the quality screw to set the maximum speed for the Partner chainsaw.

If it works like a 4-stroke engine, then the chainsaw carburetor has been configured correctly.

Carburetor adjustment

Factory settings of fuel equipment are carried out according to standard indicators of air temperature and atmospheric pressure. Additional carburetor adjustment is necessary if the engine does not start or does not develop speed after warming up. In another variant, it stalls when you press the gas or does not work at idle speed.

The most likely cause of this malfunction is the mixture entering the engine cylinder is too rich or too lean. The recommended sequence for setting up the fuel supply system is given in the maintenance and operating instructions.

By rotating the quantity and quality adjusting screws, the gasoline-oil emulsion is brought to the standard proportion of 1:16.

The key to successful setup is:

• high-quality gasoline and properly prepared fuel mixture;
• preliminary cleaning of the air filter;
• warming up the engine to operating temperature level.

If there is a breather in the engine design, you should ensure that it is in good working order. The constant ignition gap does not need adjustment. In order to set the ignition correctly, it is enough to adjust the gap in the spark plug.

All models of the brand range operate on a fuel mixture prepared from gasoline and motor oil intended for engines with two-stroke gas distribution. The oil proportions are standard 40:1, for some models this figure is 50:1.

Depending on the air temperature, consumables are selected from the company list recommended by the instructions. It is allowed to use analogs of the same quality that are identical in characteristics. Motor oils and their chain analogues are not interchangeable.

Basic malfunctions and their elimination

For one reason or another, the tool may fail. Before disassembling the chainsaw, you need to prepare. After all, hands alone are not enough to repair a chainsaw; you will need plumbing tools.

Basically, the chainsaw does not start for two reasons: lack of spark and problems with the flow of fuel from the carburetor to the cylinder. This manifests itself as follows: the chainsaw does not start or works intermittently. When the speed increases it stalls.

First, we clean the outer casing from dust and dirt. After this, remove the lid and also clean its inner surface. We unscrew the spark plug, clean it, and check the gap between the electrodes. If necessary, we adjust the gap. We put the wire on the spark plug and bring it to the body, pull the starter. If we see a spark, it means the ignition system is OK. If necessary, you can replace the spark plug. Along with the spark plug, it is necessary to check and clean the fuel filter. After reassembly, the saw should start.

The next problem is a malfunction of the carburetor settings. This often occurs due to engine vibration after long periods of operation. It needs to be adjusted again. There are 3 adjusting screws: S (idle speed), H (maximum speed), L (minimum speed). We adjust them according to the instructions.

These are the two main reasons that affect the plant and operation of the chainsaw. To eliminate them, there is no need to completely disassemble the chainsaw. Eliminating other types of faults requires significant skills; for example, anyone can disassemble a carburetor, but not assemble it. It is better to entrust complete disassembly and troubleshooting to specialists. Sometimes specialized wrenches are required that are not included in regular locksmith tools. Buying them can be more expensive than going to a repair center.

Overall, the chainsaw is quite good. A fairly reliable chainsaw with proper operation and timely prevention.

Chainsaw Partner is a type of motorized gardening and forestry equipment that is in great demand among consumers due to its high-quality technical and operational characteristics and low price. The manufacturer of household tools is the Swedish company Partner, part of the Husqvarna concern since 2006. She was the first in the world to manufacture motor saws with innovative innovations - chain brakes and heated handles.

Some models are made in China under license and are marked with the letter S.

The manufactured products have high performance, functionality, wear resistance and maintainability. The mechanisms are adapted for operation in difficult climatic conditions and are characterized by stable traction performance at nominal and maximum operating conditions.

Operating instructions for the Partner 350 chainsaw

“Partner 350” is a rather complex tool. Therefore, it is imperative to study the available instructions. Strictly follow the recommendations and observe safety precautions. The chainsaw runs on ai92 and ai95 gasoline in a ratio of 1:50 with oil for two-stroke engines.

Before starting work you must:

• Fill with gasoline and oil.
• Check the tire fastening.
• Check chain tension.
• If necessary, adjust the carburetor.

After the engine starts, you need to warm it up a little.

During operation, overheating must not be allowed; the chainsaw must be allowed to cool. Use sharpened chains, check chain tension and lubrication. Use quality fuel and oil. Do not violate the proportions of gasoline and oil. Compliance with these requirements will allow the “Partner” to work for a long time.

"Partner" P350S

A popular version of a chainsaw, which is often purchased by our compatriots. It is characterized by increased power indicators, despite the fact that the engine itself has a volume of only a few cm3 more than that of the previous model.

Perfectly suitable for use in a private home, country house, carpentry workshop and in forest conditions.

Chainsaw device “Partner” P350S

Typical as for other instruments of this series. The main structural elements of the unit are:

• frame;
• crankcase;
• motor and cylinder-piston parts;
• a fuel system with some distinctive features that not all chainsaws have;
• Lubrication system;
• cutting part, consisting of a guide and a chain knife itself;
• handles for hand gripping.

Specifications:

• Power indicator – 149 W;
• Torque – 13 thousand rpm;
• Oil tank – 150 ml;
• Guide – 0.4 m;
• Fuel tank – 250 ml;
• Weight – 4600 g.

Features of the P350S chainsaw

The main advantages of this modification are:

• easy start functionality;
• reduced starter resistance;
• primer;
• double activation of the chain inertia brake;
• pre-filtration air flow purification, patented as “CCS” technology;
• oil is pumped to the cutting set automatically;
• vibration damping function;
• modern design style;
• available spare parts, the installation of which does not require contacting a service center.

Design features

The Partner chainsaw diagram looks like this:

• saw bar;
• chain;
• spark arrester screen;
• brake;
• front and rear handles;
• carburetor damper;
• air filter;
• frame;
• ignition system;
• fuel tank;
• starter;
• fuse;
• muffler;
• chain tension adjusting screw;
• chain catcher.

Starting the engine is easy using the built-in electronic ignition system and a manual fuel priming pump. It not only pumps fuel, but also serves as a device for diagnosing faults. Thus, when the carburetor depressurizes, its filling capacity deteriorates and the number of air bubbles increases, which indicates the need for repairs.

The spark arrester screen retains harmful and dangerous microparticles with a diameter of 0.6 mm or more, which are contained in the engine exhaust gas flow.

The air filter is equipped with a double air purification mechanism. The impeller mounted on the starter drum protects it from large dust particles, which leads to enhanced cleaning and increased engine life.

Safety during operation is ensured by the presence of an inertial brake, which operates in manual and automatic modes.

At the moment of reverse impact, the chain stops movement and prevents injury.

The oil pump turns on during sawing, the lubrication system is automatic.

Chainsaws are equipped with a vibration damping system consisting of metal spring shock absorbers.

The fuse is used to prevent accidental acceleration of the motor, the catcher is used to intercept the sagging chain.

Chainsaw Partner 370 – tool kit

This hobby grade gasoline saw is designed and intended specifically for novice gardeners. It stands out for its simple design, ease of operation, maintenance and replacement of the saw set. At the same time, it has enough power to perform the most common household tasks.

The gas-powered tool in this configuration is equipped with a durable internal combustion engine, the volume of the working cylinder is 34 cm 3 . The engine is complemented by an effective anti-vibration unit and a proprietary air cooling system.

The Partner chainsaw saw set includes a branded bar and a reinforced forged chain. A separate screw is responsible for their tension, which requires a wrench to operate. To lubricate the headset, the saw device is initially equipped with a pump that pumps oil into the grooves on the bar.

Partner chainsaw parameters:

• power – 1.8 l. With.;
• fuel/oil tank – 400/300 ml;
• bar length/chain pitch – 35 cm/3/8″;
• weight with headset – 4.95 kg.

To protect the operator in emergency situations, the saw is equipped with an inertia brake that is activated with each reverse blow of the chain.

The device of the Partner 350 chainsaw

According to its characteristics, “Partner 350” refers to household chainsaws. It copes well with its purpose (sawing branches, cutting grooves in the construction of wooden houses, etc.). The saw has a body in which there is an engine with a muffler, 2 handles (front and rear), a bar with a chain, a chain hand brake, fuel and oil tanks. The layout and location of the units are very convenient to use.

• Single-cylinder engine with a power of 1.8 liters. With.
• Chain pitch is 3/8 inch.
• Tire length - 40 cm.
• Electronic ignition system.
• The total weight of the saw is 4.7 kg.
• The volume of the fuel and oil tanks is 400 ml and 200 ml, respectively.
• Maximum speed - 13000 rpm.

The saw is also equipped with an inertia brake, an easy start system and a double carburetor air cleaning system. All this allows you to successfully compete with saws from Husqvarna, Shtil, Carver, etc. Although it is worth noting that this brand belongs to the Husqvarna concern. “Partner” chainsaws are produced in China (such saws are marked S), the USA, Great Britain and Italy.