Howto use your lawn mower engine speed control, To convert mower – Craftsman 917.388731 User Manual
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FORESIGHT !S BETTifi
THAN NO SIGHT
The operation of any lawn 
mower can result in 
foreign objects thrown into
the eyes, which can result
___ in severe eye damage.
Always wear safety glasses or eye 
shields while operating your lawn mower 
or performing any adjustments or repairs. 
We recommend a wide vision safety 
mask over spectacles or standard safety 
glasses.
HOWTO USE YOUR LAWN MOWER 
ENGINE SPEED CONTROL
The engine speed was set at the factory 
for optimum performance. Speed is not 
adjustable.
ENGINE ZONE CONTROL
^CAUTION; Federal regulations require 
an engine control to be installed on this 
iawn mower in order to minimize the risk
of blade contact injury. Do not under any 
circumstances attempt to defeat the 
function of the operator control. The blade 
turns when the engine is running.
• Your lawn mower is equipped with an 
operator presence control bar which
requires the operator to be positioned 
behind the lawn mower handle to start 
and operate the lawn mower.
TO ADJUST CUTTING HEIGHT
Raise wheels for low cut and lower
wheels for high cut, adjust cutting height 
to suit your requirements. Medium 
position is best for most lawns.
• To change cutting height, squeeze 
adjuster lever toward wheel. Move 
wheel up or down to suit your require
ments. Be sure all wheels are in the 
same setting.
NOTE: Adjuster is properly positioned
when plate tab inserts into hole in lever.
Also, 9-posltion adjusters (if so equipped) 
allow lever to be positioned between the 
plate tabs.
Lower Wheels for High Cut
Raise Wheels for Low
TO CONVERT MOWER
Your lawn mower was shipped ready to 
be used as a mulcher. To convert to 
bagging or discharging:
REAR BAGGING
• Lift rear door of the lawn mower and 
place the grass catcher frame hooks 
onto the door pivot pins.
• To convert to mulching or discharging
operation, remove grass catcher and 
close rear door.
• Rear door must be closed.
• Open mulcher door and install dis
charge deflector under guard as shown.
• Mower is now ready for discharging
operation.
• To convert to mulching or bagging
operation, discharge deflector must be 
removed and mulcher door must be 
closed.
SIMPLE STEPS TO REMEMBER WHEN
CONVERTING YOUR LAWN MOWER
FOR MULCHING-
1. Rear door closed.
2. Mulcher door closed.
FOR REAR BAGGING -
1. Grass catcher installed.
2. Mulcher door closed.
FOR SIDE DISCHARGING -
1. Rear door closed.
2. Side discharge deflector installed. 
^CAUTION: Do not run your lawn 
mower without rear door closed or 
approved grass catcher in place.
Never attempt to operate the lawn mower 
with the rear door removed or propped 
open.
Mulcher door
