McCulloch Chain Saws

[Joe Crow]

Regarding my SDC carb. I disassembled the carb again and recleaned to no avail. Then I replaced the Diaphrams and gasket with the originals on the check valve side and the needle then held. So I assume leak was on the check valve side. I'm going to leave it that way and save the new Walbro kit for another day.

This is a single adjustable needle carb. Any advice on how to tune it?

 

[MacAttack]

Wow...how many McCullochs had a counter-balancer like that??

$350 in 1962 was a pretty penny!

I promise no more disparaging remarks about my beloved Macs....

 

[Rotax Steve]

Pretty penny you say? No kidding!

 

[MacAttack]

Holy smokes!!!!

 

[Rotax Steve]

You could buy a good used car for that today. Probably wouldn't run as good as a McCulloch but ...

 

[heimannm]

Joe - it will run pretty rich on the high side, but you can really lean on it and it will still have plenty of fuel. I like my PM55 with the fixed H, it cuts very well.

For the L, you want crisp acceleration so adjust it to where you have the best throttle response, then adjust the idle speed to insure the chain stops at idle. Usually 1 to 1-1/2 turns out from lightly seated. If you are far off that range I'd say something is amiss.

Mark

 

[eb20]

Wow ! Talk about the unicorn.