Suzuki SY413 Service Manual page 2994

6A3-86 ENGINE MECHANICAL (J18 TYPE ENGINE)
Oil pump sprocket
D Check teeth of sprocket for wear or damage.
If any damage or wear is found, replace crankshaft.
1. Crankshaft
2. CKP sensor plate
Oil pump chain
D Check oil pump chain for wear or damage.
Rear Oil Seal
Carefully inspect oil seal for wear or damage. If lip portion is worn
or damaged, replace oil seal.
Flywheel
D If ring gear is damaged, cracked or worn, replace flywheel.
D If the surface contacting clutch disk is damaged, or excessively
worn, replace flywheel.
D Check flywheel for face runout with a dial gauge.
If runout exceeds its limit, replace flywheel.
Limit on runout: 0.2 mm (0.0078 in.)