2004-2006 (2007) Honda TRX400FA Fourtrax Rancher / TRX400FGA Rancher AT GPScape Service Manual, Page 102Get this manual
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LUBRICATION SYSTEM Measure the oil pump side clearanceSERVICE LIMIT: 0.11 mm (0.004 in)
OUTER ROTOR DRIVE PIN DRIVEN SPROCKET
PUMP BODY B
SNAP RING
PUMP BO