2005-2008 Honda ATV TRX500FA/FGA Fourtrax, Rubicon Factory Service Manual, Page 262Get this manual
CRANKSHAFTAUTOMATIC TRANSMISSION CRANKSHAFT AND BALANCER INSTALLATION Apply engine oil to new rear crankshaft bearingDrive the crankshaft bearing into the rear crankcase with the marking side facing upTOOLS: Driver Attachment, 78 90 mm Pilot, 32 mm 07749-0010000 07GAD-SD40101 07MAD-PR90200 ATTACHMENT DRIVER
For front crankshaft bearing replacement, see page 13-13
PILOT Engage the balancer and crankshaft by aligning the index lines on the side surfaces of the balancer drive and driven gears and install the crankshaft and balancer together into the rear crankcase
BALANCER
CRANKSHAFT Assemble the special tools onto the crankshaftBe careful not to let the connecting rod press against the crankcase mating surface while drawing