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Rev: 8/2008
20 of 21
36B, 36BX, 36H, 36HX, 52H, 52HX
DEK
®
is exclusively distributed by GXi International, LLC
Heavy Duty Power Equipment
Troubleshooting
Problem Possible Causes Solution
Mower will not move forward or reverse
Cannot move hydro mower when the
engine is off
Engine is overheating
Grass not cut smoothly or cleanly
Mower always pulls to one side
1. Release brake on control panel
2. Ensure bypass pins are retracted
3. Release parking brake detents
4. Shift transmission into gear by slid-
ing the shifter to the right
5. Belts or engagement rods need ad-
justment (p. 17)
1. Pull left and right bypass pins and
set them in the slots in the chassis
(p. 13)
1. Replace fuel filter and flush tank
2. Clean or replace the air filter
3. Add engine oil
4. Replace spark plug
5. Mow slower, wait for grass to dry out
6. Sharpen cutting blades
7. Take in for service
1. Sharpen blades
2. Slow down while cutting
3. Let grass dry to stand up
4. Let grass dry to stand up
5. Add air pressure to low tires
6. Set deck at equal heights
7. Take blades off and install correctly
8. Clean out debris
1. Adjust controls (p. 8)
2. Take in for service
3. Adjust controls (p. 17)
4. Change drive belt
5. Take in for service
1. Hydro—brake is ON
2. Hydro—bypass levers are pulled out
3. Belt drive—parking brakes are set
4. Belt drive—transmission not engaged in
a gear
5. Belt drive—drive belt slipping
1. Hydro bypass not engaged
1. Dirt in the fuel line
2. Dirty air filter
3. Low engine oil
4. Fouled spark plug
5. Mis-application of the mower
6. Dull blades
7. Spindle bearing failure
1. Dull blades
2. Mowing too fast for conditions
3. Grass is wet or bent over
4. Blades are bent
5. Tire pressure not equal
6. Deck is set at uneven heights
7. Blades are set upside down
8. Excessive grass and debris build up un-
derneath the deck
1. Hydro—controls out of adjustment
2. Hydro—transmission failure
3. Belt drive—controls out of adjustment
4. Belt drive—belt slipping
5. Belt drive—transmission failure