Yamaha MM700A Manual page 73

LUBRICATION, MAINTENANCE AND TUNE-UP
signs of binding. If a ski is tight, refer to Chapter Thirteen
for removal and installation.
Excessively worn or damaged ski runners reduce han-
dling performance and can cause wear to the bottom of the
ski. Because track and snow conditions determine runner
wear, inspect thcm often. Check the ski runners for wear
and replace thcm if they are cracked or more than half
worn at any point. Refer to Chapter Thirteen.
Ski Alignment
Check ski alignment at the beginning of each season,
when a steering component has been replaced, or if con-
trol is a problem. Check ski alignment checked if a ski ex-
periences a hard side impact. Refer to Chapter Thirteen
for ski alignment procedures.
Shock Absorbers
Inspect the front and rear shock absorbers for oil leak-
age, a bent shaft or housing damage. The shock absorber
units are not rebuildable. If any shock absorber is dam-
aged, replace it.
Along with a visual inspection, check the dampening
action of each shock absorber periodically. Remove and
check the shock absorbers as described in Chapter Thir-
teen or Chapter Fourteen.
Front Suspension Check
Cheek the front suspension for loose, damaged or miss-
ing components. Refer to Chapter Thirteen.
Rear Suspension Check
Cheek the rear suspension for loose, damaged or miss-
ing components. Refer to Chapter Fourteen.
Inspect the rubber on the guide wheels for wear and
damage (A, Figure 18). Replace the wheels if they are in
poor condition. Refer to Chapter Fourteen.
Inspect the front limiter straps (B, Figure 18) for fray-
ing, tearing or other damage. Check the limiter strap bolts
for tightness. Replace damaged limiter straps as required.
See Chapter Fourteen.
Inspect the teeth on the drive sprockets for wear and
damage. If the sprockets are damaged, replace them as de-
scribed in Chapter Fourteen.
Rear Suspension Rail Wear Strip Inspection
Frequently inspect the wear strips (C, Figure 18)
mounted on the bottom of the rear suspension rails. Note
1. Visually check the wear strips for cracks, excessive
wear or other damage.
2. Measure the thickness of the wear strips.
3. Install new wear strips if the thickness is less than 10
Track Inspection
Inspect the track for wear or other damage as described
in Chapter Fourteen.
Track Adjustment
The track is subject to high torque loads, which may
cause the track to stretch and wear. Check the track adjust-
ment frequently as part of a routine maintenance sehed-
ule. Failure to maintain correct track tension and
alignment reduces performance and wears the track pre-
maturely. Track adjustments include track tension and
alignment.
Correct track tension is important because a loose track
slaps on the bottom of the tunnel and wears the track. tun-
nel and heat exchangers. A loose track can also ratchet on
the drive sprockets and damage both the track and sprock-
ets.
A track that is too tight rapidly wears the slider shoe ma-
terial and the idler wheels. Performance also is reduced
because of increased friction and drag on the system.
Track alignment is related to track tension and should
be checked and adjusted at the same time as the tension. If
the track is misaligned, the rear idler wheels, drive
sprocket lugs and track lugs will wear rapidly. The resis-
tancc between the track and the sides of the wheels re-
duces snowmobile performance.
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