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SECTION IV
MAINTENANCE
4-1 MAINTENANCE CHECK LIST
Perform scheduled maintenance as outlined below.
Lower implement to ground, turn off tractor, and set
parking brake before doing maintenance inspections
or work. Some checks may require raising machine
off ground and supporting with blocks. All bolts
should be torqued as indicated in torque chart
unless otherwise indicated.
WARNING
THE CUTTER CAN FALL FROM
HYDRAULIC SYSTEM FAILURE. TO
AVOID SERIOUS INJURY OR DEATH,
SECURELY SUPPORT CUTTER BEFORE
WORKING UNDERNEATH.
BEFORE EACH USE.
1. Check tractor tire air pressure. Refer to
tractor operator’s manual. Check mower tire pres-
sure. Tire pressure should be 30 psi.
2. Check blades and spindles to be sure that no
foreign objects such as wire or steel strapping bands
are wrapped around them.
3. Check blade bolts for tightness. Tighten bottom
blade bolt to 76 ft./lbs., top blade bolts to 31 ft./lbs.
4. Inspect blades for wear. Replace if necessary
per paragraph 4-5. Use only genuine Bush Hog
replacement parts. If it is necessary to sharpen the
blades, remove the blades from the spindles before
sharpening. DO NOT sharpen blades while still
attached to mower.
5. Make certain all shields are in place and in
good condition. Repair or replace any missing or
damaged shields.
6. Inspect wheel(s) for wear, damage or foreign
objects. Repair or replace if necessary.
7. Perform BEFORE EACH USE lubrication per
paragraph 4-2.
8.During operation, listen for abnormal sounds
which might indicate loose parts, damaged bearings,
or other damage. Correct any deficiency before con-
tinuing operation.
AFTER EACH USE
1. Clean all debris from machine especially under-
side of deck, underneath belt shield and off safety
decals. Replace any missing or illegible decals.
2. Inspect cutter for worn or damaged compo-
nents. Repair or replace before next use. Any
replacement components installed during repair shall
include the components’ current safety decals speci-
fied by the manufacturer to be affixed to the compo-
nent.
3. Store cutter in a dry place.
40 HOURS
1. Check belts for proper tension. Refer to para-
graph 4-3.
4-2 LUBRICATION (Figures 4-1A, & B)
BEFORE EACH USE
1. Driveline Universal Joints - Apply multi-purpose
grease with grease gun.
2. Driveline Guard - Apply 2-3 shots of multi-pur-
pose grease with grease gun to plastic fitting.
3. Wheels - Apply multi-purpose grease wiith
grease gun.
4. Caster Pivot - Apply multi-purpose grease with
grease gun.
20 HOURS
5. Driveline - Disconnect PTO driveline, pull the
two sections apart, thoroughly clean old grease from
tubes and apply thin coat of multi-purpose grease to
outside of inner (male) section. Reassemble sec-
tions and install. Pull each section to be sure drive-
line and shields are securely connected. Make cer-
tain PTO shielding is in good condition.
40 HOURS
6. Input Gearbox - Add EP80W-90 gear oil, if
necessary, to bring oil level to check plug.
NOTE
The multi-purpose grease referenced in this
secftion is an NLGI Grade 2 type grease.
Before Each Use
(4)
(3)
Figure 4-1A
(6) 40 Hours
Figure 4-1B
(5) 20 Hours
(2) Before Each Use
(1) Before Each Use
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