Lubricating The Drive Chain; Adjusting The Pto Clutch; Fastener Torque Specifications - Toro ProCore SR54 Operator's Manual

Figure 47
Models SR54, SR54-S, SR70, and SR70-S
1. Drive chain
2. Jam nut
Figure 48
Model SR72
1. Drive chain
2. Jam nut
Important:
Do not overtighten the chains; excess
tightening of chains can cause gearbox/sprocket
damage.

Lubricating the Drive Chain

Do not lubricate the drive chain unless it becomes stiff
because of rust. If the chain rusts, lubricate it lightly
with a dry-type lubricant.
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3. Jam rod
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3. Jam rod

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
1. Clutch nut
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 additional 1/4 turn
until the slipping ceases. Do not overtighten the
nuts, as shaft damage may occur.
Fastener Torque
Specifications
Crank shaft nut
Crank pin nut
Hinge bolt
34
(Figure 49).
Figure 49
2. Clutch
Models SR54, SR72
SR54-S, SR70,
and SR70-S
1288 N∙m 1627 N∙m
(950 ft-lb) (1200 ft-lb)
1288 N∙m 1288 N∙m
(950 ft-lb) (950 ft-lb)
359 N∙m 407 N∙m
(265 ft-lb) (300 ft-lb)
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