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SR50 Carb Engine Torque Specs

Component ft-lb Nm
Cylinder head nuts 7.4 10
Spark plug 14.8 20
Thermostat bolt 25.8 35
Gear oil drain plug 13.3 18
Intake bolts 5.9 8
Transmission belt cover bolts 8.9 12
Front variator pulley nut 24.3 33
Clutch housing nut (rear variator nut) 36.9 50
Clutch spring retention nut (spring under great pressure) 36.9 50
Starter gear retainer screws (qty. 2) 6.6 9
Gearbox cover bolts 8.9 12
Flywheel nut 28.0 38
Stator bolts 6.6 9

Transmission drive belt -- measure its width of the widest part at several points along the belt. New belts measure 16.6mm (0.653 in). Replace, if narrower than 15.2mm (0.598 in).

Roller weights -- measure the external diameter. Replace, if smaller than 14.5mm (0.571 in).

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