Figure 43
Model SR72
1.
Drive chain
3.
Jam rod
2.
Jam nut
Important:
Do not over tighten chains; excess
tightening of chains can cause gearbox/sprocket
damage.
Adjusting the PTO Clutch
Service Interval:
Yearly Before and after storage
WARNING
Friction clutches may become hot during use.
Do
not touch.
To avoid the risk of fire, keep the area
around the clutch free of flammable material and
avoid prolonged slipping of the clutch.
1. At the end of the season, back off each of the clutch
nuts 2 turns (Figure 44).
Figure 44
1.
Clutch nut
2.
Clutch
2. At the start of the new season, start the PTO and
allow the clutch to slip for a few seconds before
stopping the PTO. Turn back the nuts an additional
2 turns.
Note:
Do not allow the clutch to slip for an
extended amount of time.
3. If the clutch continues to slip after turning back the
nuts, tighten each nut an addition 1/4 turn until the
slipping ceases. Do not overtighten the nuts as shaft
damage may occur.
Fastener Torque
Specifications
Models SR54,
SR54–S,
SR70 &
SR70–S
SR48 & SR72
SR75
Crank Shaft
Nut
950 ft-lbs.
1200 ft-lbs.
1100 ft-lbs.
Crank Pin Nut
950 ft-lbs.
950 ft-lbs.
1100 ft-lbs.
Hinge Bolt
265 ft-lbs.
300 ft-lbs.
800 ft-lbs.
Figure 45
1.
Crank shaft nut
3.
Hinge bolts
2.
Crank pin nut
32
