MS461 hard to pull rope

[Deleted member 135597]

My guess is you ended up with an air leak after the tree fell on it, you continued to use it and fried the piston and cylinder. I would pull off that cylinder and take a good look before you try and run it again, you might be able to salvage it. That intake side does not look good at all and the exhaust side probably looks worse

 

[mountainguyed67]

 

[mountainguyed67]

My guess is you ended up with an air leak after the tree fell on it, you continued to use it and fried the piston and cylinder.

I was about to say the same thing.

 

[Natster]

It is a reed valve engine. So, it should have a little resistance, when piston is going down, compressing the air/fuel mix, in the crankcase, before the intake port is exposed, allowing the fresh charge to transfer to the top of the piston.
N

 

[Deleted member 135597]

Exhaust looks great, something is up with that intake side though. 4 bolts and the cylinder is off, just pull it. Clean that pig up first though

 

[mountainguyed67]

No caption needed.

 

[mountainguyed67]

Clean that pig up first though

Pressure washer?

 

[huskihl]

It is a reed valve engine. So, it should have a little resistance, when piston is going down, compressing the air/fuel mix, in the crankcase, before the intake port is exposed, allowing the fresh charge to transfer to the top of the piston.
N

It's not a reed valve engine. It's piston ported. Just a standard front fed quad port stihl. I don't think you could feel 1 or 2 psi of case compression while turning the flywheel over

 

[huskihl]

Pressure washer?

Air compressor...if they're legal in California

 

[Deleted member 135597]

Pressure washer?

That will work, block off those ports first though and put the spark plug in.

 

[mountainguyed67]

Air compressor...if they're legal in California

They’re still legal, for now....

I have both air compressor and pressure washer.

 

[mountainguyed67]

I need to wrap up for today, tomorrow I can clean it and take it down more. Thanks.

 

[mountainguyed67]

The broken piece I mentioned.

 

[Natster]

It's not a reed valve engine. It's piston ported. Just a standard front fed quad port stihl. I don't think you could feel 1 or 2 psi of case compression while turning the flywheel over

Well.....
I stand corrected!
I'm an old 049 cox engine fiend!

 

[huskihl]

Well.....
I stand corrected!
I'm an old 049 cox engine fiend!

 

[bayard]

that really needs to come apart.

 

[Hdtoolmkr765]

Ummm, is the recoil handle hard to pull with it off the saw?

 

[mountainguyed67]

Ummm, is the recoil handle hard to pull with it off the saw?

Not at all.

 

[tomdcoker]

Yea me too. Mike

I have a 461 that I will never get to in the repair line. The handle/tank is broken if anyone is interested P M me. Tom

 

[mountainguyed67]