2004-2006 (2007) Honda TRX400FA Fourtrax Rancher / TRX400FGA Rancher AT GPScape Service Manual, Page 73Get this manual
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MAINTENANCE
Rotate the crankshaft using the recoil starter knob and align the "T" mark on the flywheel with the index mark on the alternator coverMake sure the piston is at TDC (Top Dead Center)