Victa Lawnkeeper with 450 series B & S 148cc motor was a roadside find some years ago and appeared to have had very little use. Only problem was it was revving insanely fast and felt like it would self destruct before too long. Also, when used with the catcher the motor had to be stopped before emptying out the clippings or stuff got blown everywhere.
Tired damm everything to slow it down - removed and replaced the carb/tank with a known to be normal carb/tank, soldered up the little hole in the throttle butterfly, filled the main jet with petrol-proof epoxy and drilled a smaller hole - nothing made any difference.
Yesterday with a bit a rare spare time I decided to investigate further, suspecting an air leak where the intake tube is bolted onto the cylinder. Had to remove the coil to get the tube off. There was a fair bit of grunge and cleaning it off noticed the problem.
It looked like someone had made a small cut through the wall of the intake tube with a hacksaw !
A bit of duct tape over the cut and the Victa is now behaving perfectly.
