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2-Speed Adjustment
Although pre-adjusted at the factory, the two-speed can be adjusted to shift at the point that suits
you best. Under normal circumstances, it should shift slightly before the engine reaches maximum
power. The actual distance traveled will vary with the gear ratio and tune of the engine. There are
two adjustment screws (see fig 1) that must be changed evenly for the two-speed to function
correctly. Turning these clockwise will make it shift later and require the engine to rev higher.
Turning them counterclockwise will make it shift earlier and require less engine speed. If you should
get lost adjusting the two-speed, start over at the
factory setting
by
lightly
bottoming out the
adjustment screws and then backing them out
five
full turns. The procedure for adjusting the
two-speed is as follows:
Remove the gear cover.
Turn the spur gears until the adjustment hole is visible in the bell housing between the large
and small spur gears.
Hold the small spur gear and using your thumb; rotate the slipper forward until you can see the
head of one of the adjustment screws.
Use a 5/64 Allen wrench to make your adjustment in 1/2-turn increments. Use the bent leg of the
wrench as your guide.
Turn the slipper forward 1/2 rotation to adjust the other adjustment screw like the first.
(Remember to always adjust
BOTH
screws the same amount)
Test drive the model to check the new shift point and
replace the gear cover
if satisfied.
Never
run your model without the gear cover, as it is dangerous and gear damage will occur!
Fig 1
Later
Sooner
Note:
Outer (1st) spur
gear removed for
photo
Turning the adjustment screws
counterclockwise makes the
2-speed shift sooner; turning
clockwise will make it shift later.
Always adjust BOTH adjustment screws evenly.