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Blowers · part-number series 4282

BR 500, BR 550, BR 600

12 exploded views, 344 part numbers.

Factory tuning settings

Idle speed2,500 rpm
Confidencesourced

Set the final mixture by ear and tachometer against the machine in front of you — running a two-stroke lean to hit a published number is how pistons get scored.

Parts are not interchangeable across series — check yours before ordering.