Yamaha YFM225S 1985 Owner's Manual page 85

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Recommended lubricant:
Yamaha chain and cable lube
or SAE 10W30 motor oil
Knuckle shaft
Lubricate the knuckle shafts.
Recommended lubricant:
Lithium soap base grease
Front and rear shock absorber adjustment
Spring preload
If the spring seat is raised, the spring becomes
stiffer, and if lowered, it becomes softer.
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