Walbro 990 carb needle settings and tuning advice

[Dusty]

Oh

Yes that sounds right but look up the g290 manual its odd , 1 1/4 and 1 1/8

Oh ok I have no idea then . I don’t know that motor . So they want a rich low needle and a lean high needle by other motor standards . That is odd . But if that’s zenoah’s preferred and it’s working I guess nothing left to do but pinch adjustments tell you find your sweet spot for the tune

 

[Petrolheadz100]

6) CARBURETOR ADJUSTMENTThe carburetor comes with a standard setting, it is foroptimum performance under the barometric pressure andclimatic conditions at factory, so it may be re-adjustedaccording to load applied.Idle rpm :4000 ±300 rpm (STD Spring)H needle :1 1/8 ±1/4L needle :1 1/4 ±1/4

Weird huh?

 

[Dusty]

Like I said man it seams odd to me but I’m not formilur with that motor and it’s their motor and they should know how they need to run . Just glad you going again .