Honda HRX217HMA Owner's Manual page 26

OPERATION
Drive Clutch Lever
BLADE CONTROL LEVER
Push the drive clutch lever
forward to propel the mower.
Release the drive clutch lever to
stop the mower's forward
movement.
DRIVE CLUTCH LEVER
You can control the self-propelled speed with the drive clutch lever.
The mower will move gradually faster as you push the drive clutch
lever forward. If you push the lever all the way forward to the
handlebar, the mower will move at the speed determined by the shift
lever setting (page 25).
When moving and using the drive clutch lever to change self-propelled
speed, continue to fully hold the blade control lever against the
handlebar. This will help prevent damage to the blade control
mechanism. Use the shift lever (page 25) to change the maximum
speed so you can hold the drive clutch lever comfortably against the
handlebar.
For self-propelled mowing, press the button on top of the blade control
lever, push the blade control lever completely forward, then push the
drive clutch lever forward. The drive clutch lever can be used to hold
the blade control lever against the handlebar.
Always release the drive clutch lever before starting the engine. If the
drive clutch is engaged, the mower will move forward when you
operate the starter.
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