Polaris A09BA50FA, User Manual

Page: 46 / 256

MAINTENANCE
2.36
DRIVE CHAIN ADJUSTMENT,
CONCENTRIC SWINGARM
CAUTION: Never adjust or operate the vehicle
with the rear drive chain too loose or too tight as
severe damage to the transmission and drive
components can result.
Break-In: It is extremely important to maintain proper
chain tension to ensure the best possible chain life.
There is a chain break-in period of approximately 100
miles or two (2) tanks of fuel. During this time chain
tension should be watched very closely and loads to
the chain should be kept light.
Checking Deflection: Inspect chain deflection by
slowly moving the ATV forward so any slack that may
have previously been on the under part of the chain
is now on the top side of the chain. The bottom part
of the chain should be taught during inspection.
Measure the chain deflection as shown in the
diagram. Deflection should be approximately 3/8
in. (10 mm). After inspection, again slowly move the
ATV forward until all the chain slack is on the top side
of the chain and inspect the deflection. Repeat this
procedure several times to check different spots on
the chain.
The chain is correctly adjusted when the tightest
portion of the chain itself has approximately 3/8in., (10
mm) of deflection. It’s a common characteristic of any
chain to have one or more tight spots in the chain.
Therefore, it is extremely important to check chain
deflection in several areas of the chain to ensure
deflection is correct at the tightest point
.
3/8
″
(10 mm) Deflection