Hi Normk,'
I took the rings off the piston, and clened the ring groove out with a broken ring, had to file some parts as the ring was jamming. Rings were good so reused them, bore was good and the compression is gained by bore and rings not piston. Piston looks bad , just used wet and dry sandpaper to rub a few bad scores off. Ran the to and bottom of rings over sandpaper to get carbon off. Just cleaned carb. I even used old big oring, just smear oil on it to make it slide in.
The throttle didn't give me much rev control, but with these engines, when they come under load, they seem to develop more power.
I mowed two heavy lawns yesterday with it and it handled it. I put a knife edge on the blades with an angle grinder just for a better cut.
One more heavy lawn to do today....... I love these power torque engines, now I have two. I still have to nut out the module problem with the orange one.
My mate was watching me and said he wished motor bike engines were that easy to work on.
freebird I don't know how it got this way, not enough oil I guess.But the rings were stuck in the piston grooves , that's why there wasn't much compression..
cheers
speedy
