Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Stihl => Topic started by: ggross on May 20, 2017, 04:48:43 pm

Title: Stihl MS 660
Post by: ggross on May 20, 2017, 04:48:43 pm

Folks, have a repair question. I have a Stihl MS 660 that has had 2 new installed piston and cylinder assemblies installed. After the initial start up both times, I lose compression from frozen rings, and the latest, frozen rings and damage to the lower end of the piston. Any advise on why?

Title: Re: Stihl MS 660
Post by: mdavlee . on May 20, 2017, 05:42:46 pm

Squish too tight? Are you using a base gasket?

Title: Re: Stihl MS 660
Post by: ggross on May 20, 2017, 05:47:42 pm

Yes, on the base gasket.

Title: Re: Stihl MS 660
Post by: Cut4fun . on May 20, 2017, 05:50:18 pm

oem or aftermarket kits?  p+c kit?

Title: Re: Stihl MS 660
Post by: Cut4fun . on May 20, 2017, 05:51:52 pm

Same saw as this one?  So it was aftermarket meteor kit?  http://chainsawrepair.createaforum.com/stihl/piston-ring-instalation/msg77394/#msg77394

Title: Re: Stihl MS 660
Post by: ggross on June 19, 2017, 02:12:19 pm

Folks, what tool are you using to remove seals?

Title: Re: Stihl MS 660
Post by: Cut4fun . on June 19, 2017, 04:38:26 pm

I'm a redneck repair guy.  Poke hole and then drywall screw and pull the screw with pliers.

Some take a flat screwdriver and ground a hook in the end to pull with.