Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Echo => Topic started by: rfcomm2k on February 01, 2021, 10:29:51 am

Title: Echo 600
Post by: rfcomm2k on February 01, 2021, 10:29:51 am
Echo CS-600P, piston is scored on exhaust side. I suspect the cylinder wall is equally scored. I know on car engines cylinders are honed to remove scratches, and depending on how deep either oversize rings or else a larger piston is used.
Has anyone ever done this for a chainsaw cylinder? I can replace the piston, but the cost of a new cylinder makes it not worth fixing this saw.
Title: Re: Cylinder honing
Post by: Cut4fun . on February 01, 2021, 12:31:58 pm
You dont really need to use a ball hone at end like I do. But I like using them for a fresh crosshatch after cleaning the transfer off the plating by steps 1 and 2. 

123 thread here  http://chainsawrepair.createaforum.com/ported-saws/scored-cylinder-cleaning/msg82985/#msg82985

If you do want to use a ball hone for last step some info here. http://chainsawrepair.createaforum.com/stickys-of-how-to-basics/honing-ball-hone-etc/msg76073/#msg76073

Title: Re: Cylinder honing
Post by: Cut4fun . on February 01, 2021, 12:35:26 pm
590 I did just like your asking. I just used a new piston kit. Cleaned cylinder up. Get a new base gasket. Echo base gaskets tear easy.

Last 2-3 pages of doing 590 http://chainsawrepair.createaforum.com/echo/cs-590-wolf-review-bone-stock/