Hello and chainsaw oil feed mystery

[Jammytask]

Hello folks, it's my first post on this forum. I'm a Brit living in rural France.

 

I've got a question relating to a chainsaw problem. After having a break in and 2 Stihls nicked I now have an Active 51.51 chainsaw (cheaper and not so attractive to thieves I hope!)

 

It's developed a problem where it's feeding chain oil into the engine resulting in loads of smoke and abrupt cutting out. My local repair guy isn't interested i repairing it so I'm going to have a go myself (I used to work on aircraft in the military). Can anyone think what the possible issue may be that could lead to the chain oil finding a route into the motor side of the saw?

 

Thanks in advance.

 

Chris

[Stubby]

Hi back and welcome . Fracture in the oil tank letting chain oil into the crank case ? Bin it and get a proper saw would be my chioce .

[Jammytask]

Thanks Stubby! I think it'll end up being a replacement job but hadn't thought of a tank fracture which makes sense now. I'll keep stripping it down and see whether I can find the crack.

[mikerecike]

2p worth. I would have thought if crank case was ruptured smoking would be the least of your problems.sure it's not leaking onto the muffler somehow? What oil fuel ratio do you use?

[mikerecike]

Bin it if crank ruptured - as per stubby

[Jammytask]

Thanks Mikerecike. I've got the thing in 1000 pieces now and split the case. The paper gasket has a tear in it that would allow chain oil onto the crankshaft which would then pass past the piston rings into the head. When I upturned the chainsaw the oil was literally pouring out of the exhaust port or carb depending on which direction. I'll get a new gasket set and try rebuilding it but there's no obvious cracks.

 

Any other ideas as to the cause before I close it back up?

 

Thanks again.

 

Chris

[Mick Dempsey]

Chuck it away, seriously.

[Stubby]

Thanks Mikerecike. I've got the thing in 1000 pieces now and split the case. The paper gasket has a tear in it that would allow chain oil onto the crankshaft which would then pass past the piston rings into the head. When I upturned the chainsaw the oil was literally pouring out of the exhaust port or carb depending on which direction. I'll get a new gasket set and try rebuilding it but there's no obvious cracks.

 

Any other ideas as to the cause before I close it back up?

 

Thanks again.

 

Chris

 

I would say the " cause " is poor design , bad working tolerances , made to a price etc etc ......You get what you pay for , by cheap by twice and all those other chestnuts ! Buy a Husqvarna and up your securety .

[Jammytask]

Guess I'd better dust off the credit card then...

[NFG]

Hi & Welcome

 

Never heard of Active but buy cheap, buy twice

 

For around £330 you could have had a Dolmar 420 or a 350 for a bit less

 

If you live in France search Amazon.de & you will find them priced in Euros & free delivery to mainland EU - a lot cheaper than France.

 

 

N