McCullough super pro 81
- Thread starter bobdag
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happysaws
Addicted to ArboristSite
That saw is more than just a wall hanger... It will keep up with newer saws, and be way more fun to run.
Brian72
ArboristSite Guru
Nice saw! Get it running and feed it.
Sent from my E6782 using Tapatalk
Sent from my E6782 using Tapatalk
Nice saw indeed. Full wrap, chain brake, nice cosmetic condition. Good luck with it! MT.
ccarley
ArboristSite Member
Nice, congrats on the Mac.
When I picked up my PM610, it sure felt like it had compression too; however someone had straight gassed it in the past and the rings were stuck. Spark, fuel, and nothing. The view through the exhaust port told all.
I'm sure it's fixable. That will be a great saw when you get it running! Keep us posted.
Clay
When I picked up my PM610, it sure felt like it had compression too; however someone had straight gassed it in the past and the rings were stuck. Spark, fuel, and nothing. The view through the exhaust port told all.
I'm sure it's fixable. That will be a great saw when you get it running! Keep us posted.
Clay
How much compression? They typically won't run below 110 PSI, make sure the compression release is able to close after a pop.
Very nice saws indeed and will hang with many modern high speed units, the 82 cc McCulloch saws have a lot of guts.
Mark
Very nice saws indeed and will hang with many modern high speed units, the 82 cc McCulloch saws have a lot of guts.
Mark
bobdag
ArboristSite Member
Well I can hardly pull it over with the comp relief off. I'll put a tester on it later. Can you still get parts for these old girls?
Most parts are no problem to find - complete older mufflers are rare and cost $50+. Many here would say that the older 82cc Macs such as yours have more umph than the more modern ones. I am have a weakness for the newer ones. Ron
Old picture - few more out of sight - PM 700 in middle:
Old picture - few more out of sight - PM 700 in middle:
bobdag
ArboristSite Member
Certainly should be enough to run.
Mark
Mark
raumati01
ArboristSite Operative
Do these take a 10-10 chainbrake or do they need a specific one?
All of the 10 Series clutch covers are interchangeable. The only exception is the long clutch cover on the PM805/800/8200 type saws with the oversize mufflers, those have and extra "bump" in them to accommodate the muffler.
These will all interchange
The long cover for the PM models
The long cover for the PM805/800/8200 etc.
Some have a notch for the DSP / compression release
Mark
These will all interchange
The long cover for the PM models
The long cover for the PM805/800/8200 etc.
Some have a notch for the DSP / compression release
Mark
raumati01
ArboristSite Operative
Heimanmm , thanks for that.
bobdag
ArboristSite Member
Would a cracked intake boot cause some of the non start issue? I haven't had a chance to work on it yet.
If you put enough fuel straight down the carburetor or through the plug hole it should at least pop even with a torn boot, don't do it too much since it will run out of fuel and run lean at the end of every trial.
Mark
Mark
bobdag
ArboristSite Member
I put fuel in with a catheter down the carb. Not even a pop. Checked for spark. It's there. Pulled again nothing, more fuel down the carb, nothin. I'm leaning torwads a sheared flywheel key.
happysaws
Addicted to ArboristSite
Have you tried a different plug?
I've had plugs that produced spark, yet wouldn't let the saw run because the porcelain was cracked.
bobdag
ArboristSite Member
Ya. I put a new plug in when I checked for spark. Curiously the on off switch isn't working. It has spark in both positions.
happysaws
Addicted to ArboristSite
Could be that the switch is dirty, or a wire is grounding somewhere...
bobdag, I know less than most of the Macmen but I have experienced new plugs that will spark in open air but apparently don't under compression. I would try another plug. If you get the same results then your timing may be off. Or you don't have the priming down to the science. There has been many times I couldn't get a pop and I could not tell if I flooded it or didn't give it enough fuel. Usually before I fling the saw across the yard, I just do something else for a while and then come back and try again - most times that solves the too much too little fuel dilemma. Ron
