mtngun
Addicted to ArboristSite
I had been bucking a 20" doug fir with my 066, running it hard and only stopping for gas and oil. The saw was cutting like a champ, but suddenly it just stopped. The gas tank was nearly empty, so I refilled and lectured myself on the dangers of letting the tank run dry.
When I went to start it, there didn't seem to be any compression, and it wouldn't start. I finished bucking the fir with a 33cc Homelite , and sure missed the awesome 066.
A compression test showed only 60 psi, even after squirting wd-40 into the cylinder. I pulled the muffler and couldn't see anything wrong ????
So today the cylinder comes off. That's odd. I didn't know chainsaw pistons were supposed to have antenna ?
There was also damage on one transfer side.
The exhaust side looks decent, considering.
Both wrist pin circlips were in place. The top ring was broken, but I take that to be a result, not a cause. The cylinder is scored high enough on the transfer side to warrant a new cylinder..... good excuse to spring for the big bore kit.
The "antenna" is 0.040" diameter. I presume it came from the carb side. I am a novice at chainsaws internals, so does anyone recognize the "antenna." ???? I'd sure like to fix the root cause of the problem before I put the saw back together.
This saw was new to me, with only about a dozen tanks through it. The guy I bought it from had done a total rebuild, including the carb. It ran like new until this happened.
When I went to start it, there didn't seem to be any compression, and it wouldn't start. I finished bucking the fir with a 33cc Homelite , and sure missed the awesome 066.
A compression test showed only 60 psi, even after squirting wd-40 into the cylinder. I pulled the muffler and couldn't see anything wrong ????
So today the cylinder comes off. That's odd. I didn't know chainsaw pistons were supposed to have antenna ?
There was also damage on one transfer side.
The exhaust side looks decent, considering.
Both wrist pin circlips were in place. The top ring was broken, but I take that to be a result, not a cause. The cylinder is scored high enough on the transfer side to warrant a new cylinder..... good excuse to spring for the big bore kit.
The "antenna" is 0.040" diameter. I presume it came from the carb side. I am a novice at chainsaws internals, so does anyone recognize the "antenna." ???? I'd sure like to fix the root cause of the problem before I put the saw back together.
This saw was new to me, with only about a dozen tanks through it. The guy I bought it from had done a total rebuild, including the carb. It ran like new until this happened.