Honda 2009 TRX90X Owner's Manual page 144

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Inspection
LEFT SIDE
3/4 5/4 in
(20 30 mm)
(1) drive chain
1. Measure the amount of chain slack midway between the sprockets.
Drive chain slack should allow the following vertical movement by
hand:
3/4 5/4 in (20 30 mm) −
2. Check drive chain slack at several points along the chain. The slack
should remain constant. If it isn't, some links may be kinked and
binding. Lubricating the chain will often eliminate binding and
kinking.
Excessive chain slack may allow the drive chain to damage the engine
cases.
−
−
−
Drive Chain
(1)
(cont'd)
Servicing Your Honda 135