MAINTENANCE/SERVICE
Gasoline Engine (continued)
GASOLINE ENGINE BELTS
IMPORTANT:
When installing
new
belts, never
pry
·
belt
over
pulley. Loosen necessary component
hardware and adjust belt tension. Re-adjust
tension
of
a
new
belt after a short run-in period.
(About 5 hours.)
To
adjust tension:
1.
Loosen necessary mounting hardware
on
component
driven
by
belt
to
be adjusted.
2.
For
alternator and governor belts, adjusttension
so
that a force
of
8
to
12 lbs. (35
to
55 N)
deflects
the
belt
3/8
inch (10 mm) at midpoint
of
longest span.
NOTE:
When moving governor
to
adjust governor
belt tension, keep
governor
parallel
to
key guides
to
prevent misalignment
of
throttle rod. ·
3.
For
compressor belt, adjust tension
so
that a
force
of
8
to
12 lbs. (35
to
55 N) deflects
the
belt
3/16
inch
(5
mm)
at
mid-span.
4. Tighten hardware and recheck tension.
SPARK
PLUGS
-
GAS
ENGINE
Spark plugs should
be
kept clean
to
ensure
optimum engine operation.
Every
200
hours
or
once
per operating season,
remove plugs
and
examine their condition:
Normal - A few light tan
or
grey
deposits.
Cold Fouling - Carbon (dry, black) deposits.
Indicates an over-rich fuel-air mixture.
Wet Fouling - Excess oil. Indicates worn rin
gs
or
cylinders, except in a new engine, where wet
fouling
may
occur
before normal oil control
is
achieved.
Oyer Heating - White-to-light grey Insulator with
blistered appearance. Indicates over-advanced
timing
or
an interruption in engine coolant
flow
.
Oil
or
Oil Ash Encrusted - Indicates oil in combus-
tion chamber.
Plugs found in "Normal" condition
(or
"Wet Fouled"
plugs in
new
or
recently overhauled engines) may
be cleaned, re-gapped and reinstalled. Re-
gap
to
0.035
inch
{0.89
mm).
When installing plugs, torque
to
30 ft.lbs. (40
N • m). Replacement plugs should be Champion
RN
12 Y
or
equivalent.
53
A -
A/C
Compressor
C - Water Pump
E - Compressor Belt
G - Alternator
/Water
Pump Belt
B - Alternator
D -
Governo
r
F -
Gov
. Belt
BELTS - GASOLINE ENGINE
CHECK PLUG
CLEARANCE
BENO
HERE
SET PLUG
CLEARANCE
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