MacDon 4000 Mower Conditioner - Manual (Page 62)

62
TROUBLE SHOOTING
SYMPTOM PROBLEM SOLUTION REF.
Ragged or uneven
cutting of crop.
(continued) Bent or misaligned
guards causing poor
shearing action. Align guards for proper
shearing action. 30
Ground speed too fast. Slow down. Ground
speed should not
exceed 8 mph (13
km/h). 25
Knife drive belt too
loose. Increase belt tension. 51
Reel drive belt too
loose. Increase belt tension. 53
Long stubble in down
crop. Reel position incorrect. Move reel forward and
down. 27
Cutterbar angle too flat
for guards to pick up
down crop. Increase cutterbar
angle. 29
Ground speed too fast. Slow down. 25
Cutting height too high. Lower cutting height
with skid plates. 28
Excessive vibration of
cutting parts. Incorrect PTO speed. Maintain 540 RPM on
PTO. ---
Excessive looseness of
knife and knife drive
parts. Remove all excessive
play from cutterbar and
knife drive to reduce
vibration, then adjust
cutting components and
drive. 48
Knocking in knife drive. Worn knife head pin. Replace. 49
Worn needle bearing in
knife head. Replace. 49
Pulling material by the
roots or tall material
leaning into machine. Reel position incorrect.
Ground speed too slow.
Move reel forward and
down.
Increase ground speed.
27
25
Reel speed too fast. Reduce reel speed. 26