Operator's Manual

Figure47
ModelSR72
1.Drivechain3.Jamrod
2.Jamnut
Important:Donotovertightenchains;excess
tighteningofchainscancausegearbox/sprocket
damage.
AdjustingthePTOClutch
ServiceInterval:YearlyBeforeandafterstorage
WARNING
Frictionclutchesmaybecomehotduringuse. Do
not touch. Toavoidtheriskofre,keepthearea
aroundtheclutchfreeofammablematerialand
avoidprolongedslippingoftheclutch.
1.Attheendoftheseason,backoffeachoftheclutch
nuts2turns(Figure48).
Figure48
1.Clutchnut2.Clutch
2.Atthestartofthenewseason,startthePTOandallow
theclutchtoslipforafewsecondsbeforestoppingthe
PTO.Turnbackthenutsanadditional2turns.
Note:Donotallowtheclutchtoslipforanextended
amountoftime.
3.Iftheclutchcontinuestoslipafterturningbackthe
nuts,tighteneachnutanaddition1/4turnuntilthe
slippingceases.Donotovertightenthenutsasshaft
damagemayoccur.
FastenerTorque
Specications
ModelsSR54,
SR54–S,
SR70&
SR70–S
SR48&SR72SR75
CrankShaft
Nut
1288N-m
(950ft-lbs)
1627N-m
(1200ft-lbs.)
1491N-m
(1100ft-lbs.)
CrankPinNut
1288N-m
(950ft-lbs)
(1288N-m
(950ft-lbs)
1491N-m
(1100ft-lbs.)
HingeBolt359N-m
(265ft-lbs.)
407N-m
(300ft-lbs.)
1085N–m
(800ft-lbs.)
Figure49
1.Crankshaftnut
3.Hingebolts
2.Crankpinnut
33