Polaris 340 LX 2007, Service Manual

Page: 75 / 327

3.21
MAINTENANCE
3
Track Tension
Track tension is critical for maintaining correct suspension
operation. If the track tension is too loose it may cause the track
to slip or “ratchet” on the drive shaft drivers and cause the track
and rear suspension durability problems. If the track is too tight
it will wear down the rail slides, reduce top speeds, cause rear
suspension vibration and cause track and rear suspension
durability problems.
1. Lift the rear of the machine and place a jack stand or secure
the rear of the machine so that the track is off of the
ground.
2. Start the engine and slowly let the engine turn the track
over. This will warm up the track for a correct
measurement.
3. Shut off the engine.
4. Place a 10 lb. (4.54kg) weight at point (A). Point (A) is 16
”
(41cm) ahead of the rear idler shaft (E).
5. Measure the distance (D) between the rail slider and the
track. This measurement should fall with in the
measurement range for the appropriate vehicle, see chart o
this page.
6. If adjustment is needed, loosen up the lock nuts (B) on each
side.
7. Loosen up the idler shaft bolts (F).
8. Turn each adjuster bolt (C) toward the idler wheel
(clockwise) if you need less of a measurement. Turn the
adjuster bolt (C) toward the front of the sled
(counterclockwise) if you need a greater measurement.
9. When you achieve the correct tension listed below, torque
the lock nuts (B) and idler shaft bolts on each side to 35 ft-
lb (48 N-m).
NOTE: Track alignment affects track tension.
Misalignment will cause excessive wear to the track
and slide rails. Excessive slide wear will appear on
units with the track tension set too tight (or below
measurement specification).
Rear Engine Torque Stop Adjustment
After aligning clutches, adjust the rear torque stop (A) by
loosening the lock nut and rotating the stop so that the clearance
is 0.010
”
- 0.030
”
(0.25 - 0.75mm) from the whole surface of the
torque stop.
If replacing a new torque stop, adjust the torque stop so that the
tip (B) is touching the engine case.
o
B
C
A
D
16”(41cm)
E
TRACK
F
SUSPENSION MEASUREMENT
IQ 121, IQ Touring, IQ LX
7/8" - 1 1/8"
(2.2-2.9cm)
RMK, Switchback, 340 LX,
500 XCSP, 550 LX,
SuperSport, Trail RMK
3/8" - 1/2"
(1-1.3cm)
Wide Track LX
3/4" "- 1"
(1.9-2.5cm)
340 Touring, Trail Touring
1 1/8" - 1 3/8"
(2.9-3.5cm)
= T
Torque Stop Jam Nut: 15-17 ft-lb. (21-24 N-m)
A
B
TORQUE STOP