MAINTENANCE
7-96
7 to 8 mm
98 N (10 kgf)
1
3
2
M1U1-07-089
Alternator
Pulley
Fan Pulley
Crank Pulley
Check and Adjust Fan Belt Tension
--- every 250 hours (first time after 50 hours)
ZX135US-6
IMPORTANT: Loose fan belt may result in insufficient
battery charging, engine overheating, as well as a
rapid, abnormal belt wear. Belts that are too tight can
damage both bearings as well as the belts.
Inspection
Check fan belt tension by depressing the midpoint between
the fan pulley and the alternator pulley by your thumb
with a depressing force of approximately 98 N (10 kgf ).
Deflection must be within the value illustrated in the right.
Visually check the belt for wear. Replace if necessary.
Adjust Drive Belt Tension
1. Loosen lock nut (1) and alternator lower mounting bolt
(3).
2. Rotate tension adjust bolt (2) to adjust the belt tension.
3. After completing adjustment, tighten lock nut (1) and
alternator lower mounting bolt (3) to specifications.
Standard Tightening Torque:
Nut : 25 N·m (2.5 kgf·m)
Bolt : 52 N·m (5.2 kgf·m)
IMPORTANT: When a new belt is installed, be sure to re-
adjust the tension after operating the engine for 3 to 5
minutes at slow idle speed to be sure that the new belt
is seated correctly.
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