020t rotor wont turn

[Rich2484]

I would reccomend this.

 

STIHL MS200 CYLINDER & PISTON ASSEMBLY 1 YR WARRANTY WITH METEOR PISTON | eBay

 

About a week to turn up from Italy.

[stonerfan]

Thanks mate Ive bookmarked that.

[H-A]

It sounds like big or little end bearings have broken up.

 

I would split the crankcase and check the crank/conrod.

 

H-A

[spudulike]

Check the screw on the orange air filter cover still has both sides of its end - the bit that screws in to the inside of the airbox - it is common for one of these to get damaged by heavy handed operators.

 

Other than that, a circlip that has come out and is now embedded in to the piston crown is possible!

 

Damaged small/big ends generally cause lack of compression but don't cause this locking up.

 

I would say you have got something embedded in the top of the piston crown or the top of the cylinder:thumbdown:

[Ray1]

I would say you have got something embedded in the top of the piston crown or the top of the cylinder:thumbdown:

 

My educated guess is that the piston has been fitted wrong way round and its got a piece of ring embedded in the top of the cylinder.

[stonerfan]

Took the saw back today and the chap took it apart.

Two small metal fragment fell out of the cylinder. There was no sign of any damage to the new piston, rings, or barrel. He inspected the crank and bearings etc and all are sound.

He thinks they might of got in through the exhaust as that is the only item he didnt initially take apart. The fragments look like old piston to me.

Anyway he took the exhaust apart, cleaned it up and reasembled the saw.

Its back up and running now:001_smile:

 

Thanks for all the input guys.

[spudulike]

Took the saw back today and the chap took it apart.

Two small metal fragment fell out of the cylinder. There was no sign of any damage to the new piston, rings, or barrel. He inspected the crank and bearings etc and all are sound.

He thinks they might of got in through the exhaust as that is the only item he didnt initially take apart. The fragments look like old piston to me.

Anyway he took the exhaust apart, cleaned it up and reasembled the saw.

Its back up and running now:001_smile:

 

Thanks for all the input guys.

 

At least it wasn't terminal, many of these type of faults are, all ended well:thumbup: