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Edgers · part-number series 4137

FS 75, FS 80, FS 80 R, FS 85, FS 85 R, FS 85 T, FS 85 RX

25 exploded views, 687 part numbers.

Factory tuning settings

Idle speed2,800 rpm
Max speed10,500 rpm
L screw (low speed)1 turn
H screw (high speed)3/4 turn
Confidencesourced

Screw figures are turns open from lightly seated. 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.

Others on part-number series 4137

These share the powerhead, so a sheet you cannot find here may be filed under one of them. That does not make every part interchangeable — check yours.

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