Honda HRB216HXA Harmony Owner's Manual page 23

OPERATION
Shift Lever
SHIFT LEVER (TXA)
Use the shift lever to select
SLOW
the forward speed at which
you wish to mow.
Do not use the throttle lever to
adjust your forward speed.
The throttle lever must remain
in the FAST position for good
mowing performance.
Otherwise, cut quality suffers.
FAST
TXA (gear transmission model): You can shift gears without
releasing the drive clutch lever, but the transmission may not shift
smoothly if the mower is pulling hard. For smoother operation, release
the drive clutch lever before shifting gears.
For maximum mowing performance, use 1st and 2nd gears for mowing
and 3rd gear for transporting.
To avoid incomplete gear engagement, be sure the shift lever is
centered in one of the three detent positions.
HXA (hydrostatic transmission model): The position of the shift
lever determines the maximum ground speed when the drive clutch
lever is fully engaged.
For maximum mowing performance, use the lower speed range for
mowing and the higher speed range for transporting.
With the shift lever all the way back and the drive clutch lever engaged,
the mower will move slowly or not at all.
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