MacDon 4000 Mower Conditioner - Manual (Page 61)

61
TROUBLE SHOOTING
SYMPTOM PROBLEM SOLUTION REF.
Excessive breakage of
knife sections or
guards. Cutting height too low in
stony conditions. Raise cutting height
with skid plates. 28
Cutterbar angle too
steep in stony
conditions. Decrease cutterbar
angle 29
Header flotation too
heavy in stony
conditions Adjust to lighter float
setting. 30
Guards, knife and hold-
downs misaligned. Straighten guards, align
hold-downs. 50
Ground speed too high
in stony conditions. Reduce ground speed. 25
Knife speed too slow. Maintain 540 RPM on
PTO. ---
Knife back breakage. Bent or broken guard. Straighten or replace. 50
Worn knife head pin. Replace. 49
Dull knife. Replace. 49
Ragged or uneven
cutting of crop. Cutterbar angle too flat
for guards to pick up
down crop. Increase cutterbar
angle. 29
Reel position incorrect. Move reel forward and
down. 27
PTO speed too slow. Maintain 540 RPM on
PTO. ---
Knife sections or guards
are worn or broken. Replace worn or broken
parts. 48
Bent knife causing
binding. Straighten a bent knife.
Check alignment and
adjust if necessary. 49
Knife hold-downs
improperly adjusted. Adjust hold-downs so
knife works freely, but
still keep sections from
lifting off guards. 50
Bent or misaligned
guards causing poor
shearing action. Align guards for proper
shearing action. 50