Bush Hog GT 48 manual Section Maintenance, Maintenance Check List, Belt Adjustment, Replacing Belt

SECTION III

MAINTENANCE

WARNING

BEFORE PERFORMING MAINTRENANCE INSPECTIONS OR WORK ON CUTTER, SHUT CUTTER ENGINE OFF AND DIS- CONNECT SPARK PLUG WIRE. FAILURE TO DO SO COULD RESULT IN ACCIDEN- TAL STARTING OF ENGINE CAUSING POSSIBLE INJURY OR DEATH.

3-1 MAINTENANCE CHECK LIST

Perform scheduled maintenance as outlined below. Shut down engine, disconnect spark plug wire, and disconnect battery pigtail harness before doing main- tenance inspections and work. For engine mainte- nance see Engine Owner’s Manual. All bolts should be torqued as recommended in Torque Chart unless otherwise specified.

BEFORE EACH USE

1.	Check engine oil level. Add oil as necessary per
	engine owner’s manual.
2.	Check engine fuel level, add as necessary. Allow
	engine to cool before filling. Use only approved
	funnel and container to handle gasoline. Do not
	fuel tank indoors. Wipe up spilled gasoline.
3.	Inspect blade belt for tightness and wear. Tighten
	if necessary per paragraph 3-2.
4.	Check blade for sharpness and damage. If dull,
	sharpen at a 45 degree angle on a bench grinder.
	Make certain blade is balanced before rein-
	stalling. If blade is bent, broken, or worn out,
	replace with a genuine Bush Hog replacement
	blade.
5.	Check blade bolts for tightness. Tighten 3/4 x
	2-1/4” bolts to 297 ft./lbs. and the 1/2 x 2” bolts to

10.During operation, listen for abnormal sounds which might indicate loose parts, damaged bear- ings, or other damage. Repair or replace as nec- essary.

40HOURS

1.Grease blade hub assembly using grease gun and multi-purpose grease until grease purges out top seal. Wipe away excess grease to prevent contact with belt.

3-2 BELT ADJUSTMENT

A. Remove belt shield.

B. Check belt tension as shown in Figure 3-1. If belt needs adjusting, proceed to step “C”. If not, reinstall belt shield.

C. Loosen four bolts securing engine stand to deck weldment. (Figure 3-2)

D. Turn adjusting bolt located at front of engine stand clockwise to tighten belt, counterclockwise to loosen belt. Place enough tension on belt to allow not more than 1/2” and not less than 1/4” deflection. (Figure 3-1) If a belt tension gauge is available, set to 120 lbs. of tension.

E. Tighten four engine stand bolts. F. Reinstall Shield.

3-3 REPLACING BELT

A. Remove belt shield. (Figure 3-2)

B. Loosen four bolts securing engine stand to deck weldment.

Figure 3-1	Approximately 1/4”
Belt Deflection

76 ft./lbs.

6. Check blade bar nut for tightness. Tighten to 750

ft./lbs.

Straight Edge

Ruler

7.	Make certain the cutter deck enclosed sides are
	not damaged, bent or missing. Make necessary
	repairs before operating cutter.
8.	Make certain belt shield is in place and in good
	condition.
9.	Clean any debris from the safety decals and
	check decals for legibility. Replace any missing or
	illegible decals. Read and heed the safety decal
	messages.

4 lbs. of Force

Figure 3-2

Belt Shield

Engine Stand

Adjusting Bolt

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