Honda TRX450R Service Manual page 327

CRANKCASE/TRANSMISSION/CRANKSHAFT/BALANCER (After '05)
Install the balancer driven gear to the balancer shaft T . ,
4 N r F R
while aligning its tab with the clinched tooth of the
B A L A I N I
^
t h l
balancer shaft.
Install the balancer drive gear onto the crankshaft
by aligning the wide groove with the flat tooth
(punch mark).
Mesh the balancer drive and driven gears while
aligning the punch marks (balancer timing marks)
as shown.
Install the washer.
Apply oil to a new balancer shaft lock nut threads
and seating surface, and install it onto the balancer
shaft.
16-9