Honda FG400 Owner's Manual page 22

OPERATION
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Forward Gear Selection (A2 type only)
1. Return the throttle lever to the slowest position.
2. Release the clutch lever
to disengage the clutch.
3. Move the shift lever to the desired gear position.
If the shift lever will not engage the desired gear, squeeze the clutch lever
and move the tiller slightly to reposition the gears.
HANGE LEVER
RACKET
I
NEUTRAL
20