(DIR) Return Create A Forum - Home
       ---------------------------------------------------------
       Chainsaw Repair
 (HTM) https://chainsawrepair.createaforum.com
       ---------------------------------------------------------
       *****************************************************
 (DIR) Return to: Homelite
       *****************************************************
       #Post#: 38024--------------------------------------------------
       707D compression/pressure
       By: dynodave Date: April 3, 2014, 6:05 pm
       ---------------------------------------------------------
       Any one know what is cranking pressure for these old saws? My
       707D blew just shy of 145psi. It has a new piston and rings
       running in a scratched, but not severely scored cylinder. It has
       now run Idled and throttled up for a total of about 10 minutes.
       I have to send off my dead new tinytach and hope to get a
       warranty replacement, so I can set up the governor to 6K. Then I
       can cut wood and get it tuned to break from 4 stroke into 2
       stroke...yeah baby...
       pix of the patient here...
 (HTM) http://atlanticgreen.com/images/707da1t.jpg
 (HTM) http://atlanticgreen.com/images/707da1t.jpg
       #Post#: 38063--------------------------------------------------
       Re: 707D compression/pressure
       By: Eccentric Date: April 4, 2014, 5:00 pm
       ---------------------------------------------------------
       The Homelite Service Manual tells us to refresh the engine when
       compression falls below 100 psi.  You're doing very well to have
       145 psi with a scratched cylinder.
       #Post#: 38066--------------------------------------------------
       Re: 707D compression/pressure
       By: dynodave Date: April 4, 2014, 7:15 pm
       ---------------------------------------------------------
       Thanks Aaron
       I got curious and tried a pressure test on my 7-19C (82cc) also,
       and got just shy of 165psi. Both saws were converted to new std
       (no skip) 404 chain. The 7-19C is a 20" hard nose bar and the
       707D is a new 30"carlton bar.
       I've got a 15' piece of red oak 28" at the big end for testing
       cookies. I need the 707 running and cutting good for a maple at
       another property that is much bigger.... ;D
       *****************************************************