To rich fuel mixture ?

[Jens]

Hi

Is it possible to damage the engine if the fuel/air mixture screw is to rich on fuel ? I know it aint cool to have to littel fuel and to mouch air, but what the other way arround ?

Jens.

[Pete.L]

Slightly rich is better than slightly lean, yes BUT
It can lead to carbon deposits build up, increased wear on the piston and bore, hot spots or even holed pistons. At the very least you will just get through plugs and fuel at an astonishing rate.
It's cheaper to put the bike on a dyno and have a diagnostic run done than put 2 sets of spark plugs in it.
If you are worried, get it tested

Pete.l