Generac PRIMEPACT 50 04164-3 - Manual (Page 15)

Section 3 – Maintenance
Recreational Vehicle Generator
Change the engine oil filter after the first 25 hours of operation, •
and every 100 operating hours thereafter.
To change the oil and/or oil filter, proceed as follows (see Figure •
3.1):
1. Run the engine until it is thoroughly warmed up (at least five
minutes) then shut OFF the engine.
2. Immediately after the engine shuts OFF, pull the oil drain hose
free of its retaining clip. Remove the cap from the hose and
drain the oil into a suitable container. Loosening the oil fill cap
will allow the crankcase to drain faster.
3. After the oil has drained, replace the cap onto the end of the oil
drain hose. Retain the hose in the clip.
4. With the oil drained, remove the old oil filter by turning it
counterclockwise.
5. Apply a light coating of clean engine oil to the gasket of the
new filter.
6. Screw the new filter on by hand until its gasket lightly contacts
the oil filter adapter. Then, tighten the filter an additional 3/4 to
one turn.
7. Remove the dipstick and wipe it dry with a clean, lint-free
cloth. This will be used later to check the oil level.
8. Remove the oil fill cap on the rocker cover and slowly add
the proper type and amount of recommended oil (see section
"Engine Oil Requirements"). 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.
9. Install and tighten the oil fill cap and the dipstick before oper-
ating the engine.
10. Start the engine and check for leaks.
NOTE:
Check the oil level and fill to the “FULL” mark after checking for
leaks. The filter will retain some oil.
3.3 MAINTAINING THE ENGINE
AIR CLEANER
3.3.1 CLEANING THE FOAM PRECLEANER ‹
Clean and re-oil the foam precleaner every three months or every
25 hours of operation, whichever occurs first. Service the foam
precleaner more frequently if operating the generator in extremely
dusty or dirty conditions. Use the following procedure (Figure
3.2):
1. Turn the two screws counterclockwise to loosen.
2. Remove the cover, foam precleaner and paper filter.
3. Remove the foam precleaner from the cover.
4. Wash the foam precleaner in liquid detergent and water.
5. Wrap the foam precleaner in a clean cloth and gently squeeze
it dry.
6. Saturate the foam precleaner in clean engine oil. Gently
squeeze it in a clean cloth to remove excess oil and to distrib-
ute oil (DO NOT TWIST).
7. Install the foam precleaner into the cover, followed by the
paper filter.
8. Install the cover, foam precleaner and paper filter.
9. Tighten the two screws to retain the filter in place.
Figure 3.2 – Engine Air Cleaner
PAPER
AIR FILTER
FOAM
PRECLEANER
AIR CLEANER
COVER
SCREWS
3.3.2 CLEANING OR REPLACING ‹
THE PAPER FILTER
Once each year or every 100 hours of operation (whichever comes
first), clean or replace the paper filter. The new replacement filter
must be flame retardant. Service the paper filter more frequently if
operating the generator in extremely dusty or dirty conditions. Use
the following procedure (Figure 3.2):
1. Follow steps 1-3 in the "Cleaning the Foam Precleaner" sec-
tion; service the foam precleaner if necessary.
2. Remove the paper filter.
3. Clean the air filter by tapping it gently on a solid surface. If the
filter is too dirty, replace it with a new one. Dispose of the old
filter properly.
4. Clean the air cleaner cover then reassemble following steps
7-9 in the "Cleaning the Foam Precleaner" section.
3.4 CLEAN AIR INTAKE
Clean all foreign material from the air intake (Figure 3.3) at least
once every 100 hours of operation. Clean more often if neces-
sary.
Inspect the area around the generator exhaust muffler periodically
and remove all grass, leaves, dirt, etc., from this area.
Figure 3.3 – Cleaning Air Intake
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