Polaris A09BG50AA User Manual page 45

If less than one inch, two things must be examined:
Free Play:
Free play of the brake pedal should be 1/8 - 1/4
inch (3.2 - 6.35 mm).
If free play is excessive, inspect pedal, linkage, and
master cylinder for wear or damage and replace any
parts as needed.
Bleeding:
If free play is correct and brake pedal travel is still
excessive, air may be trapped somewhere in the
system. Bleed the hydraulic auxiliary brake system in
a conventional manner, following the procedure
outlined in Brake Chapter 9.
DRIVE CHAIN AND
SPROCKET INSPECTION
Polaris ATV drive chains are equipped with O-ring
sealed permanently greased pins and rollers. The
sprockets and outer
lubrication. Lubricate the chain with Polaris O-Ring
Chain Lubricant (PN 2872073).
Inspect the drive chain for missing or damaged
O-Rings, link plates, or rollers. Do not wash the chain
with a high pressure washer, gasoline or solvents; do
not use a wire brush to clean the chain as damage to
the O-Rings may occur. Clean chain with hot soapy
water and a soft bristled nylon brush.
Never allow battery acid to contact the drive chain.
Service Limit:
1/4" (6mm)
Drive Chain Lubricant:
Polaris O-Ring Chain Lubricant
(PN 2872073)
rollers require periodic
SPROCKET INSPECTION
Inspect the sprocket for worn, broken or bent teeth.
To check for wear, pull outward on the chain as
shown. Replace sprocket if chain movement exceeds
1/4" (.6 cm).
DRIVE CHAIN INSPECTION
The chain must be replaced when it reaches 3%
elongation. The chain master link is a press--on style
that requires a chain pressing tool to install and
remove the link.
1. Stretch the chain tightly in a straight line.
2. Measure a length of twenty pitches (pins) from pin
center to pin center, and compare to the
specification. Replace the chain if the length
exceeds the wear limit.
3. When replacing or reinstalling drive chain, install
the closed end of the splice link clip as shown, with
the closed end leading in forward operation.
Proper
Splicelink Clip
Opening
Position
Drive Chain Wear Limit- -20 Pitch Length:
Std: 12.5" (32 cm)
Wear Limit: 12.875" (32.7 cm)
MAINTENANCE
.003--.005"
(.076--.127 mm)
Gap after installation
2.35