Generac Power Systems 00862-2 - Manual (Page 16)

Section 3 - Maintenance
MAINTENANCE
3=^
Series QP55-C Recreational Vehicle Generator
3.5 CHECKING THE ENGINE
SPARK PLUG
Clean the spark plug and reset the spark plug gap
every 100 hours of operation.
1. Clean the area around the base of the spark
plug to keep dirt and debris out of the engine.
Clean by scraping or washing using a wire
brush and commercial solvent. Do not blast the
spark plug to clean.
2. Remove the spark plug and check the condi­
tion. Replace the spark plug if worn or if reuse
is questionable.
Check the spark plug gap using a wire feeler
gauge. Adjust the gap to 0.030 inch (0.76 mm)
by
carefully bending the ground electrode
(Figure 3.4).
Figure 3.4
-
Setting the Spark Plug Gap
SET PLUG GAP AT 0.030 inch
3.
---------ik CAUTION M.---------------------
A
Sparking can occur if the wire terminal does
not fit firmly on the spark plug terminal end. If
necessary, re-form the wire terminal to obtain a
tight fit.
3.6 FUEL FILTER ( gasoline only )
Remove and replace the fuel filter (Figure 3.5)
once each year or every 100 hours of operation,
whichever comes first.
Figure 3.5 - Fuel Filter
3.7 SPARK ARRESTOR MUFFLER
If the generator is not equipped with a spark arrestor
exhaust muffler and is to be used on any forest cov­
ered, brush covered or grass covered unimproved
land, you may have to Install a spark arrestor. The
spark arrestor must be maintained in effective work­
ing order by the vehicle owner/operator.
For assistance in ordering, installing and maintain­
ing spark arrestor exhaust mufflers, contact your
nearest Generac Authorized Service Dealer.
Exhaust mufflers supplied by Generac are spark
arrestor types. Generac exhaust mufflers for recre­
ational vehicle generators do not have a spark
arrestor
screen, but are of the more efficient
“toroid” or “swirl” type. To remove carbon and com­
bustion deposits from such mufflers, remove the
plug from the muffler and run the engine for
approximately 15 minutes. Shut down the engine,
let the muffler cool and install the plug.
-A
WARNING
A-
Be sure to reinstall the muffler plug tightly.
Engine vibration could cause a loose plug to
fail out. Without the plug in place, hot engine
exhaust is directed out the opening. This hot
exhaust, depending on the installation, could
be directed to areas not able to withstand the
extreme heat such as wooden floor boards or
other flammable material. This could result
in a fire.
3.8 CLEANING THE GENERATOR
Keep the generator set as clean and dry as possible.
Protect the unit against excessive dust, dirt, corro­
sive vapors, road splash, etc. Permitting dirt and
moisture to accumulate on generator windings will
have an adverse effect on the insulation resistance
of those windings.
When moisture is allowed to remain in contact with
windings, some of the moisture will be retained in
voids and cracks in the insulation. This causes a
reduced
insulation resistance and will eventually
cause problems. Dirt will make the problem worse,
since dirt tends to hold moisture in contact with
windings. Salt (as from sea air) also will worsen the
problem since it tends to absorb moisture from the
air. Salt and moisture, when combined, form a good
electrical conductor.
---------ik CAUTION ik----------------------
Do NOT use a forceful spray of water to clean
the generator. Water will enter the generator
interior and cause problems, and may also cont­
aminate the generator fuel system.
1 4 Generac* Power Systems, Inc.