1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
Remove the capscrews that secure the noise
shield (see Figure 6-4) to the engine and lift
off
the noise shield.
Remove the three nuts (located along the lower
edge of the scroll) that fasten the flywheel guard
to the scroll.
Remove the capscrews that fasten the scroll to
the backplate and lift away from the scroll.
Remove the screws that fasten the cylinder air
housings to the backplate and cylinder heads and
lift off the air housings.
Loosen the flywheel capscrew and back it out
several turns.
Attach puller tool to the flywheel as shown in
Figure 6-5. The tool has two jack screws that fit
into the tapped holes in the flywheel.
Tighten the puller center screw until the flywheel
comes loose. Remove the puller, flywheel center
screw, and washer. Inspect the flywheel and
replace
it
if any air vanes are missing.
Remove the lead from the low oil pressure cut-off
switch.
Remove the exhaust manifold as described in the
Exhaust System section.
Remove the capscrews that secure the backplate
to the engine and lift off the backplate.
Use a brush or low pressure compressed air to
remove any dirt or debris that may be lodged on
the engine cooling fins.
Assembly:
Cooling system assembly is the reverse of
disassembly. When installing the flywheel, align the
keyway in the flywheel with the woodruff key on the
crankshaft. Use non-hardening sealer on the fly-
wheel capscrew threads and tighten to the specified
torque. Refer to Exhaust System in this section when
installing the exhaust manifold, muffler, and tailpipe.
FLYWHEEL
FLYWHEEL
PULLER
FLYWHEEL
‘
CAPSCREW
cs-1000
FIGURE
6-5.
FLYWHEEL PULLER
-1
Overheating can result in engine
damage.
To
avoid overheating,
never operate the generator set with any
of
the cool-
ing system components removed.
IGNITION
SYSTEM
The ignition system consists of the breaker points,
condenser, ignition coil, spark plugs, and wiring. For
reliable generator set operation, the complete igni-
tion system must be in good working order and prop-
erly adjusted. Many generator set “problems” can be
traced to an improperly maintained ignition system.
Refer to the following sections when servicing or
making adjustments.
Breaker Points and Condenser
The breaker points and condenser mount on top of
theengine block. Asmall plunger rides on an ignition
cam at the end of the camshaft. The plunger actuates
the points which can open and close twice with every
revolution of the camshaft. Point opening is deter-
mined by the point gap setting. The exact timing of
the ignition spark is dependent on when the points
open.
It
is important that the breaker points have the correct
gap for easy starting, efficient operation, full power,
and proper cooling. A retarded ignition will reduce
efficiency while an advanced ignition will cause
overheatina.
The condenser extends point life by preventing arc-
ing across the opening breaker points.
A
defective
condenser causes a weak spark and rapid point wear.
Replace the condenser if defects are suspected.
A
new condenser is supplied with the engine tune-up
kit.
Breaker
Point
Replacement and Adjustment:
Inspect
the breaker points at the interval specified in the
Operators Manual and replace if pitted or burned.
Filing of the points is not recommended. Use the
following procedure to replace and adjust the points.
The ignition adjustmentsshouid be made with the engine in a static
condition and cold.
1.
Disconnect the negative
(-)
battery cable at the
battery terminal.
2.
Remove the breaker box cover clip and
lift
off the
breaker box cover.
3.
Remove the spark plugs to permit easy rotation of
the engine and generator assembly. Using a hex-
head socket and socket wrench, turn the rotor
through-bolt in a clockwise direction until the
breaker point gap is open the maximum amount.
4. Remove the condenser mounting screw (screw
A)
and disconnect the condenser and ignition
lead wires (screw
B).
Lift
out condenser (see Fig-
ure
6-6).
6-8
Redistribution or publication of this document
by any means, is strictly prohibited.
Redistribution or publication of this document
by any means, is strictly prohibited.
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