Generac Power Systems 005802-2 XG Professional Series Owner's Manual page 15

3.4.6 REPLACING THE SPARK PLUG(S)
Use NGK BPR6HS spark plugs or equivalent. Replace the plugs
once each year. This will help the engine start easier and run
better.
1. Stop the engine and pull the spark plug wires off of the spark
plugs.
2. Clean the area around the spark plugs and remove them from
the cylinder heads.
3. Set the spark plug gaps to .76 mm (0.030 in.). Install the
correctly gapped spark plug into each cylinder head (Figure
12).
4. Push the boots firmly on the spark plugs.
Figure 12 – Spark Plug Gap
3.5 SERVICE AIR FILTER
The engine will not run properly and may be damaged if using a
dirty air filter. Clean or replace the air filter paper filter every 200
hours or once a year . Clean or replace more often if operating
under dusty conditions. To clean or replace paper air filter:
• Remove air filter cover and remove paper filter (Figure 13).
• 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 filter cover. Next insert new paper filter into the base of
the air filter. Re-install air filter cover.
To order a new air filter, please contact the nearest authorized
service center at 1-888-GENERAC.
NOTE:
Figure 13 – Air Filter
3.6 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.
 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:
• Loosen the clamp and remove the spark arrestor screen from
the muffler.
• 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 secure with the clamp.
Maintenance
13