Stihl repairs and restoration thread

[JOEPRO]

It got it tore down. It's the main bearings are badly worn and causing issues. So yet another mis diagnosis! The original Stihl cylinder is like new. The piston could be re used but has one weird scratch on it. I'm almost certain someone jammed a screwdriver in there as nothing else could have caused it. I could sand it out but I think it's best get a new aftermarket piston for it.





Some additional clues for the crank bearing issue:




Anyway in terms of parts cost, this one will be a relatively cheap fix. They also installed brand new air filters and likely charged the guy for that and their mis diagnosis.

This saw is so clean it may end up staying in my collection I'll see.

 

[angellonewolf]

how do you clean them ?

 

[JOEPRO]

how do you clean them ?

I have a Lavor hot diesel washer that speeds things up alot. I use screwfix degeaser neat in a spray bottle and a stiff alloy wheel brush to scrub between hot washes. Then immediately blow it dry with compressed air.

Concrete saws can be slightly trickier and require some form of brick acid to get all the residue off. I did use some neat spirt of salts on this one to quickly remove the build up cement which worked very well but be warned its nasty stuff and wear appropriate PPE. I sometimes steep the parts in a weaker mortar residue remover instead.