Anonymous-0
Well-known Member
Got my F-12 running a couple of weeks ago. Engine was loose, rebuilt magneto, carb, fuel pump, new spark plugs, magneto timed, set valve lash hot, points set to .013", spark plugs gapped, etc. Ran great for the first few hours, but now it loses power going uphill and shakes at higher rpm. Adding choke for more fuel does not help. The shake at high rpm also happens when out of gear and also when clutch is pushed in so it's in the engine. idles just fine and got spark to each cylinder and no exhaust smoke. I'm out of ideas and would appreciate any thoughts. thanks!