- Tue Aug 27, 2013 9:45 pm
#2599
finished breaking in my 350 rebuild and was climbing a rather steep hill in 3rd gear, as 4th just bogged down. throttle open, heard a scraping noise from the motor which was accompanied by temporary loss of power. the sound only lasted a few seconds and the power quickly returned. bike has run great ever since and has climbed that same hill again. no oil loss, no smoke, plug looks great. any need to open it up and take a look, or should I just go about my business.