19
TROUBLESHOOTING GUIDE
The following troubleshooting guide is for the mower and its drive. This assumes the tractor engine is
running to prescribed specifications and the tractor hydraulics are working properly. Consult the
Tractor Repair Manual for all tractor system checks.
Before attempting repair or test, observe the general condition of the tractor and mower. Make certain
the tractor is operating properly and the mower is setup correctly. The following information may give
you some hints in what to look for when attempting to solve a problem with the mower. If the problem
cannot be easily solved, contact your SHIBAURA Dealer.
SYMPTOM
PROBLEM
CORRECTION
Excessive Vibration.
Loose gearbox bolts.
Re-torque or replace as necessary.
Loose spindle/blade fasteners.
Re-torque or replace as necessary.
Damaged
gearbox.
Rebuild gearbox as necessary.
Worn or damaged driveline or
universal joints.
Rebuild driveline as necessary.
Blade interference with grass
buildup in deck.
Clean the underside of the deck.
Blades out of balance,
Balance blades according to
instructions found on page 11.
Blade(s) broken or worn badly. Replace mowing blades in sets of 3.
Low on lubricant.
Fill to oil level plug.
Gearbox Overheating.
Debris buildup on top of mower
deck around gearbox.
Clean deck top and remove debris.
Gearbox Noisy.
Worn or rough bearings.
Replace bearings.
Worn or rough gears.
Run-in gears or replace bearings.
Gearbox Leaking.
Damaged oil seal.
Replace
oil
seals.
Damaged shaft in seal area.
Replace shaft and oil seals.
Oil seal installed wrong.
Replace oil seals.
Oil level too full.
Drain oil to correct level.
Cracked or broken housings.
Replace the housings or complete
gearbox assembly.
Gasket damaged.
Replace liquid gasket (page 17).
Bolts loose.
Re-torque bolts (page 21).
