FS360 seized

[Neil-R]

I would say that the "pin" is in fact the end of the piston circlip , i have seen a few of these snap off .

It would be the FS420 cylinder that would be compatible (46mm) , 460 is new generation

[openspaceman]

I would say that the "pin" is in fact the end of the piston circlip , i have seen a few of these snap off .

It would be the FS420 cylinder that would be compatible (46mm) , 460 is new generation

 

Thanks

 

Could well be, is there only one clip? The clip which is there on the pole side definitely has no tang.

 

The current one is 44mm so are you saying the later FS420 one would be a replacement? It does seem to be readily available where the 44mm is not.

[openspaceman]

 

The current one is 44mm so are you saying the later FS420 one would be a replacement? It does seem to be readily available where the 44mm is not.

 

Just as a follow up; although the Stihl pot and piston are available they cost £250 so I needed a cheaper solution. I was given the engine from a seized fs550 with the ring lands of the piston broken up and the nilasil damaged, it looked the same but a 46mm piston, so I ordered a cheap Taiwanese pot and piston for £70. It doesn't look good quality and is chromed rather than nikasil.

 

When I assembled it the cylinder bolt patterns were slightly different so now I have rebuilt the 550 engine but with running gear and carb from the 360, it fires up OK.

 

Now I have to search around for a 550 top cover as this is different to allow for the de-compressor and the black fairing for the tuning screws is different plust I need to block a superfluous hole under the choke, I shall try the stuff Stubby recently recommended sugru?