Iv.maintenance; Maintenance Check List; Lubrication - Bush Hog Squealer SQ142 Operator's Manual

DANGER
ROTATING CUTTER BLADES, STAND CLEAR
UNTIL ALL MOION HAS STOPPED. TO AVOID
AN ACCIDENTAL FALL FROM TRACTOR
AND POSSIBLE INJURY FROM CUTTER, USE
ROPS (ROLLOVER PROTECTION STRUC-
TURES) AND SEAT BELT EQUIPPED TRAC-
TORS FOR ALL MOWING OPERATIONS.
F. Place tractor in gear and proceed forward.
Advance tractor throttle to 540 PTO rpm. Tractor for-
ward speed should be controlled by gear selection,
not engine speed. For maximum cutting efficiency,
forward speed should allow cutter to maintain a con-
stant, maximum blade speed. If cutter stalls or tractor

4-1 MAINTENANCE CHECK LIST

Perform scheduled maintenance as outlined below.
Lower machine to ground, turn off tractor and set
parking brake before doing maintenance inspections
or work. All bolts should be torqued as recommend-
ed in the Torque Specifications unless otherwise
indicated.
BEFORE EACH USE
1. Check tractor tire air pressure. Refer to tractor
operator's manual.
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 to 600
ft./lbs. (814 Nm) on Models SQ160, SQ172,
SQ184 and SQ84T, or 460 ft./lbs. (624 Nm) on
Models SQ-142 and SQ148.
4. Inspect blades for wear. Replace if necessary
per paragraph 4-3. Always replace both blades
on blade holder with two blades equal in weight.
Use only genuine Bush Hog replacement blades.
5. Make sure belting and bands are in good repair.
6. Make certain driveline shields are in place and in
good repair.
7. Inspect wheel for wear, damage, or foreign
objects. Repair or replace if necessary.
8. Perform BEFORE EACH USE lubrication per
paragraph 4-2.
9. During operation, listen for abnormal sounds
which might indicate loose parts, damaged bear-
ings, or other damage.
engine bogs, disengage PTO. Before re-engaging
PTO, position cutter in a cut area and reduce tractor
throttle to idle. If cutter continously stalls, select
lower gear and/or increase cutting height.
ALL ROTARY CUTTERS CAN DIS-
CHARGE OBJECTS AT HIGH SPEEDS
WHICH COULD RESULT IN SERIOUS
INJURY TO BYSTANDERS OR PASSERS-BY.
THEREFORE, THIS CUTTER IS NOT TO BE
OPERATED ALONG HIGHWAYS OR IN ANY
AREA WHERE PEOPLE MAY BE PRESENT
UNLESS ALL SIDES OF THE UNIT ARE
ENCLOSED BY PERMANENT BANDS THAT
ARE IN GOOD REPAIR.
SECTION IV
MAINTENANCE
1. Clean all debris from machine especially under
side of deck. When cleaning underside of deck,
securely block machine into position.

4-2 LUBRICATION

The multi-purpose grease referenced in this
section is an NLGI Grade 2 type grease.
1. Driveline Universal Joints - Apply multi-purpose
grease with grease gun.
2. Driveline Guard - Apply 2-3 shots of multi-
purpose grease with grease gun to plastic fitting.
3. Driveline - Disconnect PTO driveline, pull two
sections apart and apply thin coat of multi-
purpose grease to inside of outer female section.
Re-assemble sections and install.Pull each sec-
tion to be sure driveline and shields are securely
connected. Make certain PTO shielding is in
good condition.
4. Wheel Pivot Tubes - Apply multi-purpose grease
with grease gun.
5. Tailwheel - Apply multi-purpose grease with
grease gun.
6. Gearbox - Check oil level by removing oil level
check plug on right side of gearbox. Add EP80W-90
gear oil if necessary to bring oil level to check plug
hole. Capacity of SQ142 and SQ148 is 1.6 quarts
(1.5L), SQ160 and SQ172 is 2 quarts (1.9L). Capacity
of SQ184 is 1 quart (.95L). Capacity of SQ-84T
10
WARNING
AFTER EACH USE
(Figure 4-1 & 4-2)
NOTE
BEFORE EACH USE