Can someone please give me advice on what’s wrong with my chainsaw?

[Matty12345]

Hi everyone. For a while now I’ve been having trouble with my Partner 370 chainsaw. It cold starts and runs fine but after I’ve cut for a while - 3 or 4 mins, then stop cutting it switches itself off and will refuse to start again no matter how many times i try. After leaving I for a long time it will eventually start back up again and run fine for a while then stop again. Any suggesting as to what the problem could be and any help would be greatly appreciated. Thanks.

 

[Wood Chopper]

Hi everyone. For a while now I’ve been having trouble with my Partner 370 chainsaw. It cold starts and runs fine but after I’ve cut for a while - 3 or 4 mins, then stop cutting it switches itself off and will refuse to start again no matter how many times i try. After leaving I for a long time it will eventually start back up again and run fine for a while then stop again. Any suggesting as to what the problem could be and any help would be greatly appreciated. Thanks.

Try opening the gas cap when it does this and see if you hear a hissing sound. Air locked?


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[cus_deluxe]

Sounds like a coil issue or maybe fuel tank vent? Not familiar with a partner 370, what vintage is that?

 

[cus_deluxe]

Try opening the gas cap when it does this and see if you hear a hissing sound. Air locked?


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Haha beat me to it. If this fails, then try checking for spark when the saw does this as well.

 

[dmb2613]

Does it feel like it has good compression when hot?

 

[jeremyc]

Try the things mentioned above, but you can also pull the spark plug when it wont run and get an idea of whats wrong. If the plug is wet then its probably losing spark(coil) but if the plug is dry its likely a fuel delivery issue.

 

[scottr]

Matty , your Partner 370 looks like my 42cc Poulan Pro and if I were in your shoes then I would remove the muffler to look at the piston , ring , and cylinder . If not scored then gas cap vent for gas tank .

 

[Matty12345]

Thanks everyone for your responses. I think it may be a problem with the coil and have ordered a new one. Hopefully this will sort the problem. Thanks again, matty.

 

[ken morgan]

Thanks everyone for your responses. I think it may be a problem with the coil and have ordered a new one. Hopefully this will sort the problem. Thanks again, matty.

bit of advice....don't do the parts swapping route, you will end up with enough parts to build another saw...treated race engines like that when i was younger went through a lot of parts like that at first till I learned to trouble shoot.

 

[Okie]

Spark arrestor screen in muffler will cause those symptoms also if restricted.