Hi, I have a Mac cat839, about 20 years old but only done around 30 hours work. I can't get it to start.
I have rebuilt the Walbro carb with new diaphragms etc, but still won't start.
I can get it to run for a second or so by squirting easy start into the air intake and I have used neat petrol with no oil in.
When it starts I get clouds of smoke even though there is no oil in the fuel. Is it possible that chain oil is leaking into the
crank case and preventing the fuel pump from working correctly, if so is it a big job to replace the seals or pump.
its in too good a condition to dump so any guidance would be appreciated.
I look forward to hearing from anyone with an idea.
thanks and best regards
Al
