Saturday, January 26, 2013

Stihl MS660 Cylinder Reassembly.

Customer said that his Stihl MS660 had no power, it was siezed! Pressure test revealed air leak through the clutch side, main bearing seal. The ring land had broken out of the front of the piston, the rings snapped, chipping the chrome above the exhaust port and embedding the rings into the top of the cylinder.
The Stihl MS660 has been cleaned, a new cylinder gasket installed, new piston installed, new gudgeon bearing installed and is now ready for the cylinder to be installed.

A piston block and ring compressor fitted.

Piston installed into cylinder, I have pre-oiled the lip on the intake manifold, to ease installation. I have also put the screws with loctite added to the threads, into the cylinder, I find it easier than trying to install them after.

Intake manifold installed and cylinder torqued down.

Muffler installed, using loctite on the screw threads.

Top cover, plug and filter cover installed.

Starter installed.

Ready to tune.

No comments:

Post a Comment