15
CAUTION:
Do not turn too sharply when the wing mowers are pulled in tandem or pulled
behind a zero turn mower. Sharp turns can force the mowers into each other causing
damage to the hitches.
Listen to the wing mower engines while mowing. The engines should run free and not work too
hard. Working the engine too hard will cause overheating and premature failure.
Do not allow material to build up on the air inlet to the engine cooling system. If the wing
mowers are towed with one on the left and one on the right side, there will be a lot of material
blowing around the right wing mower engine. Special care should be taken to make sure the
engine is getting enough inlet air. Do not allow the engine cooling fins under the shroud to be
blocked. Air flow over the engine will be restricted causing the engine to overheat.
Mowing to fast in very heavy, long grass can cause the wing mower engine to pull down and
disengage the blade clutch. The engine can then start to accelerate again while slipping the
clutch. Small amounts of clutch slippage for a few seconds will not cause damage. If the clutch
is allowed to slip for longer periods, it will overheat and could be damaged. Watch the discharge
chute; if material is not being discharged, then the clutch is slipping. In normal conditions, clutch
slippage will not be a problem. In most cases the clutch can be repaired by replacing the clutch
springs and clutch bearing.
CAUTION:
If the mower blades are allowed to stall out (stop turning) at engine speeds
above the clutch engagement speed, this will cause the clutch to slip. If the clutch is
allowed to slip for more than five minutes, the clutch will get red hot and could cause the
drive belt to start burning.
G.
DRIVE BELT REMOVAL AND TENSION
WARNING:
Shut off engine and allow mower blades to stop turning before making any
adjustments or repairs.
Remove the safety shields.
Loosen the nuts on the spring-loaded idler; adjust the nut until the belt can be slipped off the
idler and drive sheaves.
Slip the belt down under the drive sheave and off the blade spindle sheaves.
Install the new belt and adjust the tension as follows:
Model H60B: –
See Figure 8.
Adjust the spring-loaded idler springs to a compressed length of 15/16” initially for a few hours
until the belts run in; then adjust the spring to 1-1/8” to 1-1/4” compressed length.
