Page G-4
ENGINE
Repair and Service Manual
Read all of Section B and this section before attempting any procedure. Pay particular attention to all Notes, Cautions and Warnings.
B
Although not as accurate, a
new
belt may be depressed
with a finger. A maximum deflection of 3/8" (10 mm) is
acceptable (Ref. Fig. 11 on Page G-4).
Fig. 11 Checking Belt Tension with Finger
Re-tighten an
existing
belt to 75 - 80 lbs. (34 - 36 kg)
tension using the same technique. A maximum deflec-
tion of 1/2" (13 mm) is acceptable.
Adjusting the Belt
Using a 3/4" socket and open end wrench, loosen the
starter/generator pivot bolt.
While holding the lower adjusting nut with a 9/16"
wrench, loosen the upper jam nut with another 9/16"
wrench. Move the lower nut up or down the adjustment
bolt until proper belt tension is achieved. Hold the lower
nut in place and tighten the upper jam nut against it (Ref.
Fig. 12 on Page G-4).
Fig. 12 Adjusting the Belt Tension
Using a 3/4" socket and open end wrench, tighten the
starter/generator pivot bolt.
COOLING SYSTEM CLEANING
At least once a year, or more often under adverse condi-
tions) the cooling system should be cleaned. Cleaning
will assure an adequate supply of air to the cooling fins.
Compressed air may be used for routine cooling system
maintenance.
Fig. 13 Cleaning Cooling System with Air
Operation in wet or damp weather or overly fresh cut
grass may result in a variety of debris accumulating and
adhering to the internal shroud and fins of the cooling
system. If this condition exist, proceed as follows:
Avoid spraying water on electrical components.
With the engine cold, direct a strong stream of water at
the cylinder head cooling fins beside the timing belt
cover.
Fig. 14 Cleaning Cooling System with Water
3/8" (1 cm) Maximum
Deflection (New Belt)
1/2" (1.3 cm) Maximum
Deflection (Existing Belt)
Jam Nut
Adjusting Nut
