Hi all
I got a used hyper 7 with a sh pt21-p3 engine I ran 2 tanks of fuel through it and the one way bearing went.
Bought a new bearing, I removed the old one and fitted a new one using a small bearing puller. Once fitted it didn't work I had to spray some wd40 on it and it worked fine.
Then took the buggy out again started fine a couple of times, then the next time the pull start stuck out.
I striped it down to find the rollers in the bearing out of line, 2 of them were right at the front of the bearing the majority were sat in the middle and 1 was sat nearer the back of bearing.
Now what I'm wanting to know is it something I have done (should I have put some grease in the bearing).
Could it be a bad bearing it was supposed to be a ina bearing from years in the motor trade I have always found ina bearings to be good.
Or could it be a problem with the engine it was supposed to be new and just broke in when I got it. But I haven't found much info on these engines on line.
I have another bearing to try just want to make sure I'm doing it right before I try it again. Any ideas or tips would be much appreciated as I've just got back In to the hobby after 20 years away.