The situation when your Partner 350 refuses to start, despite the presence of a powerful spark and a wet candle, is a classic sign of the “overflow” of the fuel mixture. This means that the cylinder receives an excess amount of gasoline, which does not have time to burn, fills the electrodes and blocks normal ignition. The owner often tries to pull the starter over and over, exacerbating the problem, as a fresh portion of fuel only increases the concentration of liquid in the combustion chamber.
The main reason lies in the imbalance between the supply of air and fuel. If the spark is stable and bright, then the ignition system is good, and the root of evil should be sought exclusively in the carburetor, fuel channels or intake system. A wet candle is an indicator that the engine “chokes” from the re-enriched mixture, and without mechanical intervention it will not work.
In this guide, we will analyze the step-by-step algorithm of actions for resuscitation of the saw Partner 350. You will learn how to dry the cylinder properly, check the leakproofness of the coils and adjust the quality of the mixture to avoid a repeat of the situation in the future.
Diagnosis of the spark plug condition
The first step is to visually inspect the twisted candle. The color of the coar and the state of the electrode can tell more about the engine modes than any tool. If the candle is black and smoked, this indicates work on a rich mixture or the use of poor-quality oil. However, if it is just wet and smells like gasoline, it is a direct indication that the fuel is not burning.
Notice the gap of the candle. For the model Partner 350 The optimal distance between the electrodes is considered to be within 0.5-0.7 mm. Too large a gap can give a weak spark under pressure, and too small can inefficiently burn the mixture. Check the integrity of the ceramic insulator: the presence of cracks can lead to breakdowns, even if the visual spark slips through.
⚠️ Warning: Never leave a wet candle in the cylinder for long periods. Gasoline washes the oil film from the walls of the cylinder and piston group, which can lead to bullying and rapid wear of the engine at the next start.
Check the moment the candle is tightened. Insufficient puff can cause a violation of heat sink and overheating, as well as air sucking, which will deceive the carburetor. Use a special candle key for installation, ensuring a tight fit.
Always have a new spark plug in reserve. Even if you cleaned the old one, it can work unstablely, and having a new part will help to quickly eliminate this node from the list of problems.
Algorithm of drying the combustion chamber
If the candle is wet, it is not enough to simply wipe it with a cloth. Fuel could get into the muffler and crankcase, so a complex drying is required. First, twist the candle and pull the starter several times vigorously. This will help to throw excess fuel mixture through the candle hole.
After that, wipe the candle dry with clean rags or run it over an open flame (exercise caution) to vaporize the remaining gasoline. Blow the candle hole with compressed air if there is a compressor, or simply leave the saw open in the sun for 15-20 minutes.
It is also important to check the air filter. If it is soaked in oil or fuel, it does not pass enough air, which causes the mixture to be re-enriched. Remove the filter cover, remove the element and inspect it.
☑️ Procedure for drying the engine
If the filter is contaminated, it must be replaced or thoroughly washed (if reusable) and dried. Starting a saw with a dirty filter means again dooming the engine to overflow.
Testing of fuel system and leakage
A frequent reason why Partner 350 It is decompressed or not started, is the depressurization of the fuel system. Air sucked through cracks in hoses or oedes, impoverishes the mixture on idlers, but with a sharp opening of the throttle, the carburetor can give a sharp interruption. However, in the context of a wet candle, we are more interested in leakage of fuel.
Examine the fuel hoses for cracks, scuffs and tears. Pay special attention to the places of connection of hoses with the carburetor and fuel tank. The rings should be elastic. If the rubber is blown, it will not ensure leakage.
How to check the fuel filter inside the tank
The fuel filter at the end of the hose inside the tank should not lie on the bottom if there is sediment. He should swim freely in fuel. If the filter is clogged, the fuel supply is disrupted, but more often this leads to a poor mixture. However, if the valve in the tank is faulty, the fuel can fill the carburetor by itself.
Check the condition of the crankshaft. Their wear leads not only to loss of compression, but also to sucking oil from the crankcase, which also affects the composition of the mixture. A special pressure tester will be required for diagnosis, but you can visually assess the presence of oily undertightness around the shaft.
Setup of the carburetor Partner 350
The carburetor is the heart of the chainsaw, and it is he who most often requires adjustment after prolonged operation or winter storage. On the model. Partner 350 There are three adjusting screws installed: L (Low) - low speed. H (High) - high speed and T (Idle) Idle.
With symptoms of a “wet candle” most often requires adjustment of the screw Lresponsible for the quality of the mixture at low revs and at start-up. If the screw is twisted too hard, the mixture becomes too rich, gasoline pours into the cylinder, without having time to burn.
Factory setting of the carburetor Partner 350 is usually: screw L - 1.5 revolution from the stop, screw H - 1 revolution from the stop, screw T - as necessary for stable idling.
First, wrap the screw. L stop at the end (without fanaticism, so as not to damage the needle), and then turn it on 1-1.5 turns. This is the baseline. After the launch (if it succeeds) the screw T Make sure that the circuit does not rotate, but the engine does not deafen.
Table of the main symptoms and solutions
For quick diagnosis, use the following table. It will help you compare the symptoms with the likely causes of your saw malfunction. Partner 350.
| Symptoms. | Probable cause | Decision |
|---|---|---|
| Candle wet, spark there | Fuel overflow, carburetor settings down | Dry the cylinder, adjust the screw L |
| Candle dry, spark is | No fuel, no filter is clogged. | Check the fuel filter and hoses |
| Candle in the smog, engine smokes | Lots of oil in the mix, bad gasoline | Change the fuel mixture, clean the muffler |
| Sparkle weak or absent | Coil, candle or stop button is faulty | Replace the candle, check the ignition module |
This table covers 90% of the typical problems faced by the owners of the gas tool. Do not ignore a dry candle in the presence of a spark - this is a signal to stop the supply of fuel, which also requires intervention.
Prevention and proper storage
To the question “why does not start Partner 350” does not arise before you at the most inopportune time, it is important to follow the rules of operation. The use of high-quality gasoline AI-92 or AI-95 and good two-stroke oil is the foundation of a long life of the tool.
Try not to store a saw with a full tank if the break in work is more than a month. The fuel mixture tends to delaminate, and the light fractions evaporate, leaving a resinous sediment that clogs the jelly carburetor.
⚠️ Warning: Never store a chainsaw in a room where people or food are located. Gasoline vapors are toxic, and residual pressure in the tank can cause a leak.
Regularly clean the cylinder cooling ribs from sawdust and dust. Overheating of the engine changes the thermal gaps and can lead to deformation of the osteoils, which ultimately affects compression and start.
The secret to a long life by a piston
After the end of sawing, let the saw work on idle turns 10-15 seconds before turning off. This will help stabilize the temperature and develop the residues of the mixture in the carburetor, preventing coking.
Compliance with these simple rules will allow you to Partner 350 Be a reliable assistant for many years. Remember that prevention is always cheaper and easier than overhaul.
Frequently Asked Questions (FAQ)
Can I use pure gasoline without oil in a two-stroke saw Partner?
Absolutely not. Engines. Partner 350 They do not have a lubrication system of a crank-shaking mechanism with oil. Lubrication is due to the oil added to gasoline. Working on pure gasoline will lead to an instantaneous piston bully and engine failure.
What is the best oil and gasoline ratio for this saw?
For modern two-stroke engines, including Partner 350It is recommended to have a ratio of 1:50 (20 ml of oil per 1 liter of gasoline) when using high-quality synthetic oils. If the oil is mineral, the proportion can be 1:40. Always follow the instructions for a particular oil.
Why does the saw start and immediately die?
Most often it is clogged with a fuel tank sapoon (a vacuum is created, and gasoline does not flow) or clogged idle channel in the carburetor. Also, the cause may be air sucking through the glands or gasket under the carburetor.
Do I need to adjust the carburetor after running a new saw?
Yes, after the first 3-5 fuel tanks (run-in period) are developed, it is recommended to check the settings of the carburetor. The parts are rubbed and the composition of the mixture may require correction to ensure maximum performance and economy.