2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 316Get this manual

2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 316

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2C-4 Rear Suspension:
Do not attempt to disassemble the rear shock absorberIt is unserviceable
3) Loosen the lock-nut (1) with the special toolSpecial tool (A): 0991060611 (Universal clamp