I got this thing all striped down and found that there
are several differences between the CP and SP125's,
Not only doe's the CP have a different Decomp assembly
which is similar to the 797 with a different lever, The lower
anti vibe mount is different, The CP has one big reeed valve
instead of the two pedal set up. The stop switch is also very
different with a two wire system because the tank is mounted
on rubber mounts. SP saws had a ground at the front AV mount.
and a single wire switch. Mufflers are also different. The CP
shares the same muffler as a 797. Fan housings are also the thin
type as on a 797, The SP had the wide housings. Air filter covers
are different with the CP having a rear opening for more air intake.
This block looks to me like it was replaced at some time. The piston
still shows it's original part number 69301 which is standard bore
thick ring. and the block has no paint anywhere.
When i first got this saw i remember trying to get it running but it
had a bad air leak. Now i know why. Look at the pic of the intake boot.
One big hole in that baby.
Got alot cleaned up and ready for the blast cabinet.
Lee