Servicing The Engine Air Filter; Spark Arrestor Muffler - Generac Power Systems 004270-2 Installation And Owner's Manual

9. Remove the dipstick, and wipe it dry with a clean,
lint-free cloth. This will be used later to check the
oil level.
10. Remove the oil-fill plug, and slowly add the prop-
er type and amount of recommended oil (see
Section 1.5.3). Periodically use the dipstick to
check the oil level and continue to fill the
crankcase until the oil reaches the dipstick
"FULL " mark. DO NOT FILL ABOVE THE "FULL "
MARK.
11. Install the oil-fill plug and the dipstick.
12. Reinstall the air filter.
13. Reattach the front service door; make sure the
latches are fully engaged.
14. Start the engine, and check for leaks.
Check the oil level and fill to the "FULL " mark,
after checking for leaks. The filter will retain some
oil.
3.3 SERVICING THE ENGINE
AIR FILTER
To access the engine air filter (Figure 3.2), remove the
front service door, located beneath the unit, by
retracting the two latches and pivoting the door
downward. Loosen the hose clamp at the base of the
air filter and remove the filter. Place the hose clamp
on the new filter and install it, making sure it is posi-
tioned properly before reattaching the service door.
Make sure the service door latches are fully engaged.
Figure 3.2 – Engine Air Filter
See the "Service Schedule," Section 3.13, for recom-
mended air cleaner maintenance.
12 Generac ® Power Systems, Inc.
Section 3 – Maintenance
QUIETPACT™ 75D Recreational Vehicle Generator
NOTE:
3.4

SPARK ARRESTOR MUFFLER

The exhaust muffler supplied with the QUIETPACT™
75D is a spark arrestor type. Generac exhaust muf-
flers for recreational 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 the muffler, proceed as follows
(see Figure 3.3):
1. Place the unit above a noncombustable surface,
and ensure that the generator exhaust piping is
cool.
2. Remove the two screws holding the spark
arrestor access plate to the rear floor pan.
3. Remove the spark arrestor access plate and gas-
ket.
4. Remove the hex pipe cap from the end of the
spark arrestor cleanout pipe.
5. Thread on a 3/8" NPT pipe coupling and pipe
nipple to extend the cleanout pipe at least 10
inches (250 mm) below the rear floor pan; addi-
tional piping may be added to direct the muffler
exhaust away from the cooling air discharge flow
beneath the unit.
6. Start and run the engine for approximately 15
minutes.
7. Shut down the engine, and allow the piping to
cool.
8. Remove the 3/8" NPT coupling and piping.
9. Apply a graphite-base, anti-seize compound to
the cleanout pipe threads.
10. Reinstall the hex pipe cap, spark arrestor access
plate, gasket, and two screws.
The exhaust system of this product gets
extremely hot and remains hot after shutdown.
High grass, weeds, brush, leaves, etc., must
remain clear of the exhaust. Such materials may
ignite and burn from the heat of the exhaust
system.
Failure to provide and maintain a spark arrestor
!
may be in violation of the law. If this generator
is used on any forest-covered, brush-covered,
or grass-covered unimproved land, the vehicle
owner or operator must maintain the spark
arrestor in good condition. In the state of
California, the preceding is required by law
(Section 4442 of the California Public Resources
Code). Other states may have similar laws.
Federal laws apply on federal lands.