Chainsaw Partner 351 - an amateur model with semi-professional capabilities

The transfer of the production of Chinese household appliances to a new qualitative level has had a positive effect on increasing consumer demand. In particular, the Partner 351 non-professional chainsaw pleased users with improved technical and operational characteristics.

The lightweight, fairly productive tool is initially intended for use in the private sector. Its capabilities make it possible to mechanize a significant amount of economic work on the procurement of fuel wood, land clearing, and the formation of tree crowns.

Photo: Partner 351 chainsaw

Range of application

If you have the skills, the saw can be used to fell trees with a diameter of up to 200 mm. The Partner 351 saw is equally suitable for standard, longitudinal and diagonal cutting of construction wood, which determines its use in the construction of wooden, log and timber structures.

Despite the budget cost and household status in the design of the tool, many characteristics correspond to the semi-professional level. The full operation of the product is facilitated by the combination of a classic layout with modern industrial design and new technical solutions.

Operational advantages of the model:

• optimal combination of weight and power of the power unit;
• good balancing and ergonomics of the body with a convenient handle shape for a secure grip;
• two-stage air purification scheme;
• comfortable work due to the effectiveness of the vibration damper and low background noise;
• combination of a compact arrangement of internal equipment with convenient access to carburetor adjustment points, chain tensioner and filler necks.

The simple design of a household tool has its advantages. Using branded and standardized spare parts, the owner of the saw can independently adjust the carburetor, troubleshoot a malfunction, or perform simple repairs.

Information support

Operation of the tool, routine maintenance, disassembly and assembly of faulty and worn components or units, determination of the cause of failures and their elimination does not require special qualifications. An exception may be fine tuning of the carburetor.

The sequence of preparation for launch, features of maintenance work, methods for identifying and troubleshooting faults with your own hands, as well as other useful information are included in the operating instructions included in the factory package.

The use of recommended fuels and lubricants, timely maintenance and competent operation guarantee the tool a low-cost development of the assigned overhaul and working life.

Specifications

Thanks to the thoughtful layout of the internal equipment, the 4.7 kg chainsaw is characterized by small overall dimensions, simplifying its use in hard-to-reach places.

• The tool is powered by a two-stroke carburetor internal combustion engine with a volume of 36 cm3 and developing a power of 1.8 hp at maximum speed.
• The fuel is a mixture of motor gasoline and motor oil for two-stroke engines, which enters the carburetor from a 400 ml reservoir built into the saw body.
• The power unit is characterized by economical fuel and oil consumption, a good torque reserve for its class, and stable operating parameters in all modes.
• Trouble-free starting and stable engine performance are ensured by the design of a manual starter, primer pump and electronic ignition.

Advantages

1. Economical maintenance – inexpensive spare parts and consumables.
2. Stable performance characteristics throughout the declared resource.
3. Rational combination of weight, size and saw power.
4. High degree of ergonomics – well-balanced design and ease of use.
5. Reasonable arrangement of internal components and mechanisms + optimal access to making the necessary settings.
6. High maintainability - owners can fix most of the faults themselves, without the help of specialists.

Flaws

1. Weak trigger mechanism.
2. Inability to visually control the amount of fuel and lubricants.
3. High demands on fuel quality.
4. Insufficient level of vibration damping system.

Carburetor adjustment

The performance of the saw largely depends on the proper settings of the fuel system. Carburetor adjustment provides for bringing the engine to the optimal mode of maximum power and economical fuel consumption.

If after adjusting the fuel system the engine does not start, the reason is most likely a faulty spark plug, lack of fuel in the carburetor due to a clogged breather or the exhaustion of the fuel filter.

The engine stalls when the gas is rapidly applied - perhaps the mixture is lean due to a clogged main jet. It should be taken into account that the reason for the drop in power and unstable operation of the power unit may be a decrease in compression due to wear of the piston group.

Setting up a chainsaw carburetor Partner

The carburetor of the Partner 351 chainsaw, like other modular components of the tool, requires appropriate maintenance, care and adjustment. If you do not pay due attention to adjusting the carburetor, it can damage the device or cause interruptions in its operation.

The ideal option is to seek help from a service center, but this does not mean that it is impossible to cope with the carburetor settings yourself.

Adjusting the carburetor of the Partner 351 chainsaw

If the Partner device is adjusted in accordance with the technical requirements, the operation of the motor will be clearly audible when switched on. If any inconsistencies (uncharacteristic sounds) are detected, it is necessary to adjust the idle speed.

To make the adjustment, you need to turn the special screw clockwise until resistance begins to be felt, after which the screw is unscrewed back four and a half turns. If all actions are performed correctly, the setup is considered complete.

To adjust the mixture supply, the manufacturer provides two separate special screws with limiter heads. This process is much more complicated than the previous one, due to the high sensitivity of the screws. Each time they can be turned no more than one sixteenth of a turn. After all the settings, it is necessary to check the proper operation of the tool; in case of failures in the operating mode, the screws return to their original position.

Work headset

The cutting unit is included in the group of replaceable equipment. The working kit includes a removable guide bar 35 cm long, a drive sprocket and a chain with a tensioning mechanism.

• Despite the budget price, the saw is equipped with an automatic chain lubrication system. By means of a pump with adjustable flow, chain oil is supplied to the working area from an internal oil tank with a capacity of 200 ml.
• The safety system blocks the movement of the chain in the event of non-standard and traumatic situations.
• The emergency brake is activated by a slight movement of the protective fence in the direction of the work front.
• A standard catcher will block a loose or broken chain.

Device Features

The design of the chainsaw includes:

• saw chain and bar;
• spark arrester screen;
• brake mechanism and cylinder-piston group;
• front handle;
• ignition system switch;
• safety device and extinguishing system;
• oil drain hole;
• fuel compartment cover;
• throttle valve;
• fuel suction button;
• chain catcher;
• protective case;
• stop tooth;
• air filter cover;
• tubular handle.

Features of the device include safety devices:

1. Chain mechanism with low risk of kickback. Helps reduce the risk of injury.
2. Spark arrester screen. Necessary for retaining soot contained in exhaust gases.
3. Protective hand guard. Helps protect your hand from injury if it slips from the tool handle.
4. Ignition switch. Instantly stops the engine in an emergency.
5. Fuse. Prevents accidental acceleration.

Benefits of a chainsaw

First of all, this is an affordable price for a wide range of users, combined with high performance capabilities for its class. The model meets the recommendations of regulatory requirements and current standards.

Its undeniable advantages:

• combination of high performance for its class with economical maintenance;
• stability of the performance characteristics of the engine and component systems throughout the assigned resource;
• increased comfort and safety of sawing work of various levels of complexity;
• convenient access to equipment for service and routine maintenance;
• a fairly wide selection of spare parts and consumables, allowing you to restore the functionality of the tool with a moderate investment of time and material resources.

Disadvantages and malfunctions

Compared to similar budget analogues, the Partner model 351 chainsaw is characterized by fewer failures and malfunctions.

Negative reviews from users and service specialists most often mention:

• engine sensitivity to substandard fuel;
• lack of visual control of the amount of fuel and oil;
• moderate quality of vibration damper springs.

A significant part of failures are the consequences of poor maintenance, excessive loads, and skimping on the quality of fuel and oils.

Video: saw 351 in action

Operating instructions for chainsaw Partner 351

Chainsaw Partner 351 differs little from other saws of the same class. Before working with the tool, it is necessary to install all removable parts in place and adjust the chain tension. The saw set, with the exception of the sprocket, is lubricated automatically, so it is also necessary to fill it with fuel mixture and lubricant.

Start the saw from a position on the ground, securing the tool with the foot threaded through the rear handle. Start the starter with the flap extended. Then turn on the ignition start button and press the primer 6 times and then proceed to restart the starter. After starting, let the tool run idle for a few seconds and use the throttle to adjust the power for operation. After which the operator proceeds to sawing with a Partner 351 chainsaw.

Owner reviews

Expensive Shtils and Husqvarnas are not affordable for every young family, so we had to opt for the cheaper Partner chainsaw model 351. The service promised a large selection of inexpensive branded spare parts in case of a serious breakdown. Luckily, the car turned out to be durable, so apart from tires and chains, as well as spark plugs, I didn’t have to buy anything else. The saw, even for a household level, is not powerful enough, you have to drive at maximum speed, however, after 4 years of operation, no noticeable decrease in traction was noted. The instrument has a whole grove of old trees, I didn’t count it exactly, but more than a hundred cubic meters of sawn firewood. For sawing hard wood, oil for cooling the chain is clearly not enough. On the advice of an experienced friend, I lower the tip of the bar at low chain speeds into a container with diesel oil. The effect is obvious: a high-quality branded chain uses up the resource almost completely. Anton

I was lucky to become the owner of one of the first batches of Parterre chainsaws. At the first stage of the 9-year operation, there were failures and malfunctions that were eliminated at little cost. The tool reached operating mode after a major overhaul with the replacement of the drive sprocket, bearings, some seals and the piston group. During the autumn firewood harvesting season, I burn up to 8-10 liters of fuel. There were some minor problems with cold starts, but a warm engine starts in what is called a half-turn. Fedor Savelievich