gremlinplay
New member
"Hi all, i have a problem with
"Hi all, i have a problem with a 50hp yammy at high rpm its seems to surge in power and it doesn't sound like its reaching 5000rpm i am guessing it round 4000/4400rpm.almost like its in safe mode! i have cleaned all the carbs,fuel lines.fitted new fuel pump and primer bulb and stil no joy. so i am hoping to have ruled out a fuel problem. i dunno where els to look.
P.S its a hand start motor on a racing duck with a 11 pitch prop on it."
"Hi all, i have a problem with a 50hp yammy at high rpm its seems to surge in power and it doesn't sound like its reaching 5000rpm i am guessing it round 4000/4400rpm.almost like its in safe mode! i have cleaned all the carbs,fuel lines.fitted new fuel pump and primer bulb and stil no joy. so i am hoping to have ruled out a fuel problem. i dunno where els to look.
P.S its a hand start motor on a racing duck with a 11 pitch prop on it."