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4-5 BLADE REPLACEMENT
CAUTION
WEAR HEAVY WORK GLOVES TO PRO-
TECT HANDS FROM SHARP EDGES.
WHEN TURNING BLADES, BE AWARE
OF OPPOSITE BLADE APPROACHING.
A. Raise cutter using tractor hydraulic system
and use transport locks before changing blades.
B. Turn off tractor,set parking brake and remove
key.
4-6 TROUBLESHOOTING
Troubleshooting procedures are listed in Table 4-1 below. If the problem cannot be solved or replacement parts
are necessary, contact your authorized Bush Hog dealer. Please have ready your machine name, model num-
ber, serial number, purchase date and exact cause or description of problem.
Table 4-1 Troubleshooting
PROBLEM
Uneven Cut
Streaking or Windrowing
Noisy Cutter
Rapid Blade Wear
(cutting edge)
Rapid Blade
Wear
Cutter Vibrating
bottom blade to spindle. Remove blade. Shaft wash-
er will come off with the blade.
shaft. Install the blade and torque the 1/2" - 20UNF
Gr. 8 bolt to 76 ft./lbs. Note: The concave side of
the belleville washer must be toward the blades.
Do not substitute with a flat washer.
PROBABLE CAUSE
Cutter not level side to side
or front to rear.
Belt slipping.
Worn or bent blade(s).
Possible build-up of
material under cutter.
Cutter not level.
Worn blades.
Belt slipping.
Mowing across slopes
Loose components.
Low oil in gearbox.
Blade contacting
ground.
Cutter not being
operated at rated PTO speed.
Cutter not being operated
at rated PTO speed.
Blade(s) bent.
Foreign object wrapped
around spindle or blade.
12
C. Remove bolt and Belleville washer securing
D. Install the blade washer over the spindle
REMEDY
See SECTION III.
Adjust belt per paragraph 4-3.
Replace blade(s).
Clean cutter.
See SECTION III.
Replace blades.
Adjust belt per paragraph 4-3.
Mow up and down slopes
Check all bolts for tightness.
Check oil per paragraph 4-2.
Adjust cutting height to
eliminate ground contact.
Set tractor throttle for
proper PTO speed.
Use lower gear.
Set tractor throttle for
proper PTO speed.
Replace blades.
Remove object.
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