EN - 43
Unit does not drive.
Parking brake is engaged. Release parking brake. See Parking
Brake Lever on page 18.
Transaxles are bypassed. Return transaxle bypass levers to
operating position. See Move Unit
Manually on page 22.
Transaxle drive belt is faulty. Replace transaxle drive belt. See
Replace Transaxle Drive Belt on
page 37.
Transaxles are faulty. Contact your Gravely dealer.
Transaxle drive system is faulty. Contact your Gravely dealer.
Hydraulic oil level is low. Add hydraulic oil. See Check
Hydraulic System on page 25.
PTO does not work.
Operator presence switch is not
engaged.
Activate switch by sitting on seat.
Operator presence switch is
faulty.
Contact your Gravely dealer.
PTO belt is faulty. Replace PTO belt. See Replace
Mower Belts on page 35.
PTO switch, wiring, connectors
or clutch are faulty.
Contact your Gravely dealer.
Unit moves with
engine off and
parking brake
engaged.
Parking brake is faulty. Contact your Gravely dealer.
Unit does not drive
straight.
Tire pressure is incorrect. Check tire pressure. See
Specifications on page 45.
Steering levers need adjustment. See Adjust Unit to Drive Straight on
page 34.
Unit creeps when
steering levers are
in neutral position.
Transaxles need adjustment. See Adjust Transaxles on page 31.
Parking brake interlock needs
adjustment.
See Adjust Parking Brake Interlock
on page 32.
Unit has poor
cutting quality.
Mower blades not level or mower
deck pitch is incorrect.
Level and adjust pitch of mower
deck. See Level and Pitch Mower
Deck on page 39.
Mower blades are dull or faulty. Sharpen or replace mower blades.
See Sharpen Blades on page 27.
Mowing speed is too fast. Drive slower when cutting grass.
Belt tension or condition is poor. Replace PTO belt or mower drive
belt. See Replace Mower Belts on
page 35.
Cutting height is too low. Do not set height of cut too low. For
very tall grass, mow twice.
Oil pressure light is
illuminated.
Oil pressure is low. Stop engine immediately and refer to
engine manual.
Malfunction
Indicator Light is
Illuminated.
(Models 991135,
991136).
System has detected an engine
malfunction.
Stop engine immediately and refer to
engine manual.
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