11
3.4 SERVICE AIR CLEANER
The engine will not run properly and may be damaged if using a
dirty air cleaner. Clean or replace the air cleaner paper filter every
200 hours or once a year (Figure 13). Clean or replace more often
if operating under dusty conditions.
To clean or replace paper air filter:
Remove air cleaner cover; then remove foam pre-filter (service •
if necessary) and remove paper filter.
Clean paper 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.
Clean air cleaner cover then slip pre-cleaner over filter. Next •
insert new paper filter into the base of the air cleaner. Re-install
air cleaner cover.
Figure 13 - Air Cleaner
Base
Cover
Filter
NOTE:
To order a new air filter, please contact the nearest authorized
service center at 1-888-436-3722.
3.5 CLEAN SPARK ARRESTOR SCREEN
The engine exhaust muffler has a spark arrestor screen. Inspect
and clean the screen at least once each year (Figure 14). If unit is
used regularly, inspect and clean more often.
NOTE:
If using the generator on any forest-covered, brush-covered
or grass-covered unimproved land, it must equipped with a
spark arrestor. The spark arrestor must be maintained in good
condition by the owner/operator.
Clean and inspect the spark arrestor when the engine is at
ambient temperature as follows:
Remove muffler heat shield from muffler by removing the four •
screws.
Remove spark arrestor from muffler by removing the four •
screws.
Inspect screen and replace if torn, perforated or otherwise •
damaged. DO NOT USE a defective screen. If screen is not
damaged, clean it with commercial solvent.
Replace the spark arrestor and muffler heat shield.•
Figure 14 - Spark Arrestor
Heat Shield
Spark Arrestor
3.6 ADJUSTING VALVE CLEARANCE
After the first 50 hours of operation, adjust the valve clearance in
the engine.
When adjusting valve clearance, the engine should be at room
temperature and the piston should be at Top Dead Center (TDC)
of its compression stroke (both valves closed). Correct clearance
is 0.001-0.003 inch (0.03-0.07mm). Adjust valve clearance as
follows:
1. Loosen the rocker arm jam nut. Use an allen wrench to turn
the pivot ball stud while checking clearance between the
rocker arm and the valve stem with a feeler gauge (Figure
15).
Figure 15 — Adjusting Valve Clearance
FEELER GAUGE
ALLEN WRENCH
Section 3 — Maintenance
Portable Generator System
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