Changing Engine Oil; Changing The Engine Air Filter; Spark Plugs - Generac Power Systems QT06030KVAN Owner's Manual

CHANGING ENGINE OIL

Refer to maintenance performed by authorized service
dealer for engine oil and filter change frequencies.
Drain the oil while the engine is still warm from run-
ning. This means warm up the engine, shut it down
and drain immediately as follows:
1. Remove OIL DRAIN HOSE from its retaining
clip.
2. Loosen and remove OIL DRAIN HOSE CAP . Drain
oil completely into suitable container.
3. When all oil has drained, install and tighten OIL
DRAIN HOSE CAP , and re-install into its retaining
clip.
4. Turn OIL FILTER (Figure 10.2) counterclockwise
and remove. Dispose of old filter.
5. Apply light coating of new engine oil to seal of new
oil filter.-Install FILTER and tighten by hand only.
DO NOT OVERTIGHTEN.
6. Remove OIL FILL CAP . Add recommended oil (see
SPECIFICATIONS). Crankcase oil capacity is 6.5
U.S. quarts (6.15 liters) including oil filter.

After refilling the crankcase with oil, always
check oil level on dipstick. NEVER OPERATE
ENGINE WITH OIL BELOW THE DIPSTICK "ADD"
MARK.
7. Start engine and check for oil leaks.
8. Shut off engine. Wait 10 minutes for oil to settle
down into the oil pan. Recheck oil level on dip-
stick.
Figure 10.2 - Oil Filter
Oil Filter

CHANGING THE ENGINE AIR FILTER

To replace the engine air filter, remove the air cleaner
cover and replace the air filter making sure it is posi-
tioned properly before reattaching the cover (Figure
10.3).
Standby Generator Sets
Maintenance
See the "Service Schedule" section for air cleaner
maintenance.

SPARK PLUGS

Reset the spark plug gap or replace the spark plugs
as necessary.
1. Clean the area around the base of the spark plugs
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 plugs
to clean.
2. Remove the spark plugs and check the condition.
Replace the spark plugs if worn or if reuse is
questionable. See the "Service Schedule" section
for recommended inspection.
3. Check the spark plug gap using a feeler gauge.
Adjust the gap to 1.12 mm (0.044 inch) by care-
fully bending the ground electrode (Figure 10.4).
Figure 10.4 – Setting the Spark Plug Gap
10-3
Figure 10.3 - Air Filter
Air Filter
Cover
Wing Nut
SET PLUG GAP AT 1.12 mm
(0.044 inch)