MacDon 742 HAY CONDITIONER - Manual (Page 45)

Form # 46290 Issue 09/05 43
OPERATION
HAY CONDITIONER FLOAT
The conditioner float is controlled by the spring at
the L/H side connected to the tractor floorboard.
Conditioner float should be such that the R/H chain
(see Conditioner Ground Clearance, previous
page) has no slack but not much tension when
cutterbar is on the ground.
Choose the chain link at the L/H spring that gives
this result.
To adjust conditioner float:
1. Raise header fully. Stop engine, remove key
and engage header lift cylinder stops.
2. Remove pin (J) and connect chain at desired
link.
NOTE: If R/H chain is too loose (too much
float) move to a link further from the spring. If
R/H chain is too tight (too little float), move to a
link closer to the spring.
3. Remove header lift cylinder stops and lower
header to ground. Repeat if necessary.
4. If R/H chain is still loose when L/H chain is at
the last link:
• Raise header fully. Stop engine and remove
key.
• Loosen jam nut (K).
• Turn float spring bolt (L) counter-clockwise until
R/H chain is at proper tension.
• Tighten jam nut (K) against spring plug to
secure the position.
NOTE: Check conditioner float whenever
substantial changes are made to the length of the
center link between tractor and header.
CONDITIONER FLOAT ADJUSTMENT
J
CONDITIONER FLOAT SPRING
BOLT ADJUSTMENT
L