Montgomery Ward MX-27129A Owner's Manual And Parts List page 15

Improper exercising may cause more damage than
no exercising at all, because of thefollowing: Signifi-
cant amounts of water and raw fuel will remain in the
lubrication oil if the unit is not at the specified operat-
ing temperature; operating engine at no load or at
temperatures below those specified causes carbon
build-up, spark plug and exhaust system fouling and
inadequate charging of battery. Continued operation
in this manner may cause starting failure and/or -
engine damage. Exercising a generator set without
exercising associated controls and switchgear does
not ensure operating integrity of the controls and
switchgear. If the associated equipment is not fully
functional, the system may fail to provide power
when required.
After each exercise period, refill fuel tank and check
engine for leaks and general condition. Locate cause
of leaks (if any) and correct.
HIGH TEMPERATURE CONDITIONS
1. See that nothing obstructs airflow to and from the
unit compartment.
2. Housing should be properly installed and undam-
aged.
DUSTY OR DIRTY CONDITIONS
1. Keep generating set clean. Keep cooling surfaces
clean.
2. Service air cleaner as frequently as necessary
(see PERIODIC MAINTENANCE section).
3. Reduce oil change schedule (see PERIODIC
MAINTENANCE section).
4. Keep governor linkage clean (see PERIODIC
MAINTENANCE section).
5. Clean generator brushes, slip rings and commu-
tator. Do not remove normal (dark brown) film.
Do not polish, (see PERIODIC MAINTENANCE
section).
TO CHECK THE OIL
mark. See PERIODIC
for recommended oil.
MAINTENANCE section
W A R N I N G
^ Do NOT check oil while the engine is operat-
of oil fill due to crankcase pressure.
1.
ing. Hot oil could cause bums by blowing out
instructions To
Open the unit housing using
Open the Unit on page 10.
2. Remove the oil level indicator shown in Figure 17
by turning counterclockwise and lifting straight
out.
3. Wipe the end of the indicator with a clean rag or
paper towel.
4. Install indicator back in engine by turning clock-
wise.
5. Remove the indicator and observe if engine oil
level reached full mark ("F"). If not, add oil
through oil base opening until it reaches full
6. Reinstall oil level indicator.
After the first 50 hours of operation of a new or reconditioned
generating set, change the crankcase oil. Afterwards, change oil
every 100 hours of operation.
B 2 8 5
FIGURE 17. ENGINE OIL LEVEL INDICATOR
RECOMMENDED FUEL
Useclean, fresh, unleaded orregulargradegasoline.
Do not use highly leaded premium fuels. Using
unleaded gasoline results in reduced valve and car-
bon cleanout maintenance.
If the use of unleaded gasoline isdesired, use regular
gasoline for the first 25 hours to allow the rings to seat
well for best performance. Then use unleaded gaso-
line thereafter.
If regular gasoline is used continuously, carbon and
lead deposits must be removed from the cylinder
heads as required to prevent engine power loss.
Unleaded gasoline may be used safely only after lead
deposits have been removed.
r ^ ^ ^ J ^ ^ ^ If lead deposits are not removed from engine
L ^ ^ ^ x ^ ^ x s J L before switching from leaded to nonleaded
gasoline, pre-ignition could occur causing severe damage to the
engine.
W A R N I N G I Never fill the tank when the engine is running
^ ^ ^ m — m ^ m ^ J and leave some fuel expansion space to pre-
vent possibility of explosion.
Filling the Gasoline Tank
W A R N I N G
Because of fire hazard, never fill the gasoline
tank while the generating set is running.
Because of gasoline fumes; sparks, flames, etc., should not be
used near the fuel system without great caution.
1. Unlock and open the compartment. See To Open
the Unit on page 10.
2. Units with tank outside compartment:
a. On the inside, rear compartment panel, lift and
slide the barrel boltlock so the gasoline tank
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