McCulloch Chain Saws

[fossil]

Could be a main nozzle check valve. If they are messed up they dump a lot of fuel.

If you have another SDC or zama , put it on and see if it's the carb causing the issue.

 

[huskadolmar]

Could be a main nozzle check valve. If they are messed up they dump a lot of fuel.

If you have another SDC or zama , put it on and see if it's the carb causing the issue.

Thanks for the guess but no...i ran a known good sdc and a known good c2 on it same as brand new zama on it.

 

[PogoInTheWoods]

On to the ignition...

 

[rwoods]

I will walk out on a limb and say spark plug once you have sorted out the fuel system. Ron

 

[huskadolmar]

On to the ignition...

Flywheel is not pretty...could be weak magnets...i hope not...i have no spare ones for a 800 and they are different. Not sure what else fits pm800

 

[PogoInTheWoods]

Bad fuel?

 

[huskadolmar]

Bad fuel?

No fuel is good 40:1 and premium. Same in my 7-10a and cp125 currently with no issues

 

[huskadolmar]

Think i need to find a flywheel...going to put coil on my 7-10 tomorrow to re verify its known good status. And also throw an inline tester on while running to see if i spot a loss of ignition or a weak spark. The 800 starts back up every time easy. It will just cut out at an idle even after it cuts out at a rev a few times. No stumble or change in rpm...just stops...like boschitis.

 

[huskadolmar]

Anyone have a spare pm800 flywheel? Or know what interchanges?

 

[fossil]

Flywheel is not pretty...could be weak magnets...i hope not...i have no spare ones for a 800 and they are different. Not sure what else fits pm800

@heimannm would be the man to ask about the flywheel. I would be surprised if others would not fit. A lot of PN's were changed in the later saws.

 

[huskadolmar]

@heimannm would be the man to ask about the flywheel. I would be surprised if others would not fit. A lot of PN's were changed in the later saws.

Far as i know its just 800 and 8200 due to a different crank length. Thanks

 

[Jethro 2t sniffer]

The flywheel is different but weather the older style and older short starter shaft maybe adapted onto it perhaps. Never had to try. Ron may have he's a handy 800 guy too. Should be easy to find 1 though. 800.805.850 super. 8200

 

[huskadolmar]

The flywheel is different but weather the older style and older short starter shaft maybe adapted onto it perhaps. Never had to try. Ron may have he's a handy 800 guy too. Should be easy to find 1 though. 800.805.850 super. 8200

Forgot about 805....and 850 super...

 

[Jethro 2t sniffer]

Aww and de80 too. Hopefully mark might have a spare

 

[heimannm]

The 800 Series flywheel is different from the others, 18 fins and they are longer that the fins on the 12 and 24 fin flywheels. The "800 Series" saws would include the PM800, 805, Double Eagle 80, PM850 Super, and the PM8200.



That said, I do believe all of the LH start flywheels will interchange, you just give up some cooling air with the 12 or 24 fin versions compared to the 18 fin. All of the earlier LH start 10 Series used the 12 fin including the SP80, 81 and 81E. The PM850, 700, and 10-10S normally came with a 24 fin except some early saws PM850 with the two piece electronic ignitions or early PM700 saws with the points ignition(12 fin). I have not tried to put an 800 flywheel on any of the other models, but have put the 12 and 24 fin flywheel on 800 Series saws.

Mark

 

[huskadolmar]

The 800 Series flywheel is different from the others, 18 fins and they are longer that the fins on the 12 and 24 fin flywheels. The "800 Series" saws would include the PM800, 805, Double Eagle 80, PM850 Super, and the PM8200.

View attachment 782996

That said, I do believe all of the LH start flywheels will interchange, you just give up some cooling air with the 12 or 24 fin versions compared to the 18 fin. All of the earlier LH start 10 Series used the 12 fin including the SP80, 81 and 81E. The PM850, 700, and 10-10S normally came with a 24 fin except some early saws PM850 with the two piece electronic ignitions or early PM700 saws with the points ignition(12 fin).

Mark

Thanks mark. So for testing anyhow it is worth trying to fit a 10-10 flywheel.

 

[huskadolmar]

So...with both coils, i used same wire...put a junk 10-10 wire on this morning and she is cutting. Sometimes i overlook the dumbest things. All the way down to the crank over a wire....atleast she is all new now. Before tearing down, airleaks were also a problem. Thanks for kicking around ideas with me.

 

[fossil]

I've come across three bad plug wires on MAC's not sure why.

 

[huskadolmar]

I have had them nice and bad and all taped up and worn down but working.

 

[huskadolmar]