PROBLEM	POSSIBLE CAUSE		POSSIBLE REMEDY
Leaves a streak  of uncut or partially cut grass	1	Mower is not level side to side.	Level 3 pt．Hitch linkage on tractor.
	2	Blades dull or bent．	Sharpen or replace blades．
	3	Carrier RPM too low．	Use correct PTO speed.
	4	Field conditions are so wet that the tractor tire is push-in grass into mud．	Too wet to mow． Stop operation and Wait until it is drier.
	5	Ground speed too fast．	Reduce ground speed by shifting to a lower gear．
	6	Blades lock back．	Free blades.
	7	Blades riding up due to blade bolt wear or loose bolts．	Replace blade bolts．
	8	Grass is down from previous weather conditions.	Mow in only one direction.
	9	Possible build up of material under mower．	Clean mower.
	10	Weed and grass stems are pushed down by tractor tires and do not rebound up so they can be cut（this can happen when weed/grass is high)	Mow again in opposite direction． Mow back and forth with enough over- lap to mow tire track of previous cut again. Offset mower toleft 4－6” by adjusting stabilizer bars．Then mow in counter clockwise direction（rotation direction of blades will help cut stems pushed forward）．
Grass cut lower In center of swath than at edge．	11	Height of mower lower at rear or front．	Adjust mower height and attitude so that mower rear and front are within 1/2’ of same height．See instructions.
Material discharges from mower unevenly；bunches of material along swath ．	12	Material too high and too much material．	Reduce ground speed but maintain 540 rpm at tractor PTO， or make two pas- ses over material. Raise mower for the first pass and lower to desired height for the second and cut a 90’ to first pass．Raise rear to mower high enough to permit material to discharge，but not so high that conditions listed above occur．
	13	Grass wet．	Allow grass to dry before mowing. Slow ground speed of tractor but keep engine running at full PTO rpm. Cutting lower will help.
	14	Rear of cutter too low，trapping material under mower．	Adjust mower height and attitude. （See instructions．）
Gearbox overheating	15	Low on lubricant．	Fill to proper level．
	16	Improper type lubricant	Replace with proper lubricant．
	17	Excessive trash build－up around gearbox．	Remove trash．
PROBLEM	POSSIBLE CAUSE		POSSIBLE REMEDY
Blade is scalping ground．	18	Mower too low．	Raise mower-reset tail wheel and 3－pt． control stop．
	19	Field is ridged．	Cut field at a different angle．
	20	Field is too wet．	stop and wait until it is drier
Mower will not cut ．	21	Shear bolt sheared.	Install new shear bolt.
mower will not cut all the time． (Slip clutch drive only）	22	Slip clutch slipping	Adjust slip clutch according to instructions．
PTO contacts cutter front frame When raised．	23	Raising mower too high or in- correct adjustment of tract- or top link．	Adjust top link or tractor lift stops.
Blade bolts come loose	24	Bolts not tightened．	Tighten bolts to 350 ft．/ lb ．
	25	Bolt hole elongated or oversized.	Replace blade carrier．
	26	Blade bolt threads are worn or damaged．	Replace blade bolt，lock washer，and nut．
Blade wears too fasr	27	Cutting in sandy conditions	Increase cutting height.
	28	Cutting in rocky conditions	Increase cutting height.
	29	Blades hitting ground	Increase cutting height.
Mower seems to require excessive power	30	Advancing into grass or brush too rapidly．	Reduce forward travel speed．
	31	Hitting ground.	Raise mower and reset tail wheel．
	32	Worn or dull blades．	Sharpen or replace blades.
	33	Tractor not large enough．	Use larger horsepower tractor
Excessive vibration	34	Check gearbox bolts．	Tighten if loose.
	35	Check for loose nuts on blade holder and blades．	Tighten if loose.
	36	Check for bent output shaft．If shaft is bent，oil will normally leak from bottom seal．	Replace shaft if bent.
	37	Check to see if blades are free－swinging．	Free blades so they swing.
	38	Check for even wear on each blade tip． Were both blades changed at the same time？	Weigh blades． Weight should be wit- hin 1 oz．Always replace both blades
	39	Blade broken.	Replace blades，in sets．
	40	Blade beam bent.	Replace blade beam.
	41	New blade or bolts marched with worn blade or bolts．	Replace blades or bolts in sets.
	42	Drivelines not phased correctly implement and tractor yokes must be in line．	Replace driveline．
	43	Wire or rope wrapped around blade beam。	Remove wire or rope．
	44	Blades worn and are out of    balance．	Replace blades，in sets.

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