Bush Hog EFM 480/600 manual Blade Replacement, Troubleshooting, Securely Block Into Position

4-5 BLADE REPLACEMENT				Figure 4-2 Blade Placement
		CAUTION
				Spindle Assembly
WEAR HEAV	Y WORK GLOVES TO PRO-
TECT HANDS FROM SHARP EDGES.
A. Raise cutter using tractor 3-point lift and
SECURELY BLOCK INTO POSITION.
B. Turn off tractor, set parking brake and remove key.
C. Remove bolt and cup washer securing blade to
spindle. Remove blade.
						Blade
D. Install new blade as shown in Figure 4-2 with con-
cave side of cup washer against blade. Be sure that
blades are installed with offset in proper direction. Tighten							Cup Washer
retaining bolt to 76 ft./lbs.
4-6 TROUBLESHOOTING					Retaining Bolt
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			PROBABLE CAUSE				REMEDY
Uneven Cut			Cutter not level				See SECTION III.
			side to side or
			front to rear.				Adjust belt per
			Belt slipping.
			Worn or bent blade(s).				paragraph 4-3.
							Replace blade(s).
Streaking or Windrowing			Possible build-up				Clean cutter.
			of material under
			cutter.				See SECTION III.
			Cutter not level.
			Worn blades.				Replace blades.
			Belt slipping.				Adjust belt per
							paragraph 4-3.
Noisy Cutter			Loose components.				Check all bolts for
			Low oil in gearbox.				tightness.
							Check oil per paragraph 4-2.
Rapid Blade Wear			Blade contacting				Adjust cutting height to
(cutting edge)			ground.				eliminate ground contact.
Cutter Vibrating			Cutter not being				Set tractor throttle for
			operated at rated				proper PTO speed.
			PTO speed.				Replace blades.
			Blade(s) bent.
			Foreign object wrapped				Remove object.
			around spindle or blade.

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