I have a Homelite Model 10540 35CC chainsaw; it starts fine when cold, but won’t start when hot. Why.
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Go to: http://www.drystacked com for a 12 page article on Walbro carburetor theory and troubleshooting. Check particularly, the position of the gasket in the lower chamber. Check the spark plug for blue, snappy spark when the engine is hot. If ok, place a small amount of fuel mix in the cylinder and try for start. If it pops several times, look to the fuel system. Check the fuel filter, air filter, and muffler for plugging. Does the primer bulb fill with fuel after several pumps? Check the fuel lines for decay or other damage. When the engine is hot, try not using the choke, but set the fast idle. Hope some of this helps!
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If your chainsaw does not start, the fuel may be too hot. To prevent this from happening, always use fresh fuel and reduce your operating time when the weather is warm. If your chainsaw will not start, place it in a cool area away from sunlight for at least 20 minutes.
Oil and Fuel Mixture Incorrect (fuel)
Adding more gasoline to your mixture should clear the smoke. However, if you notice an overheating saw, try adding more oil to your fuel mix. Failure to add any oil to the fuel mix will cause destruction of the engine.
It has a two-stroke engine similar to newer models made by Homelite. The recommended fuel mixture is a 50-to-1 ratio of unleaded gasoline and two-cycle engine oil, and the manufacturer recommends the use of a two-cycle oil that contains fuel stabilizer to keep the mixture fresh if you are not using it immediately.
A chainsaw`s carburetor mixes air and fuel to start the internal combustion engine. If fuel has been left in the engine for too long, it can become sticky and clog the carburetor, preventing it from starting. If the clog is minor, clean out the carburetor.
The heat from the engine could ignite the fuel. Instead of taking the risk, let the chainsaw cool down for 10-15 minutes before adding fuel.
Chainsaw engines are air cooled by a flywheel fan that blows over several cooling fins, sort of like a crude radiator, and overheating can ruin your saw.
One tell-tale sign that a chainsaw has flooded is the smell of fresh petrol near the muffler. To ascertain whether this is indeed the problem, simply disassemble the part, pull the starter cord as if you were switching on the engine, then dry it, reassemble it and try switching it on again.
Before you refuel your Petrol Chainsaw, allow the engine to cool for 5 minutes. Petrol vapour can easily be ignited by a spark or even a hot surface while refuelling your Chainsaw.
Vapor lock is caused by heat. Excessive heat from the engine, exhaust system, and/or outside temperature can cause the fuel to vaporize in the lines. Some winter fuel blends and high altitude can lower the boiling point of the fuel. This can also contribute to vapor lock.
Discover Relevant Questions and Answers for Your Specific Issue
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It seems that when the chainsaw gets hot, it shuts down and will not start?
Taking a wild guess at this problem,but you are probably using gas that has ethanol in it
gas with ethanol will burn up a small motor
try using non ethanol gas and see if that fixes problem
I just started up my new 16″ Homelite and the engine starts, but the mechanism that powers the chainsaw isn’t rotating… any suggestions?
The engine needs to be accelerated to make the chain turn. The chain should not be so tight on the bar that you can’t turn it by hand. Make sure the chain brake is off by pulling back on the brake paddle which has a ‘toggle’ effect–it should snap over to the new position. If still having problems, it is time to return for warranty exchange or repair. Hope this helps!
While trying to start the saw the compression is so great that it is near imposible to pull the start rope ….ie won’t spin fast enough to start … new plug ,,,, new gas …..no start ,,,tired arm ,??????
Is there a compression release button?
Won't start – Homelite Consumer Products 9.0 Amp, 14 In. Chainsaw
In my dealings with electric chainsaws if you try to cut wood too big in diameter the electric motor burns out and you will net to replace the saw
Does anyone know the carb. setting for a Homelite 45cc chainsaw. Or set up procedure??
Start 1.5 CCW from lighty seated then do as the link suggests.
Carburetor Adjustment by Madsens.com
CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.
There are 2 wav (sound – idle & full – may not be highlighted) files that I find most helpful, I think you will too.
McCullough chainsaw won't start – McCulloch Quality Mcc1435a 14" Gas 35cc 2 Cycle Chainsaw Full Warranty
If it’s a old saw..The seal goes out on the crank next to the clutch,it’s called a grease seal, it loses the suction needed to pull fuel in to the engine, can be a tricky one to replace, but will spark a old saw back to life. You may want to replace both crankshaft seals ..First try a few drops of gas down the carb, if it pops off you know it’s a fuel issue
Homelite 330 has no spark
Hi First check if the plug wires is conected with the terminal from the rubber boot,pull the terminal out of the boot,crimp it with pliers and slide it back into the boot(has to fit snugly on the plug.Let me know please. regards savumihai71
Chain brake will not release (homelite chainsaw)
The header says you have a Homelite saw and if this correct you can go to Homelite.com and look up parts or other information that you might need for your saw. There is also a contact us area. Good luck