4.5.8 CHECK FAN BELT
• Inspect fan belts every three months. Replace any
damaged, deteriorated, worn or otherwise defec-
• Check fan belt tension. Thumb pressure, exerted
midway between pulleys, should deflect about 3/8
to 5/8 inch. Adjust belt tension as required.
4.5.9 INSPECT ENGINE GOVERNOR
Visually inspect electronic governor.
Do not attempt to adjust the governor. Only
qualified service facilities should adjust the
governor. Excessively high operating speeds
are dangerous and increase the risk of personal
injury. Low speeds impose a heavy load on the
engine when adequate engine power is not
available and may shorten engine life. Correct
rated frequency and voltage are supplied only
at the proper governed speed. Some connected
electrical load devices may be damaged by incor-
rect frequency and/or voltage. Only qualified
service technicians should adjust the governed
4.5.10 CHANGING ENGINE OIL
Refer to maintenance performed by authorized ser-
vice facilities for engine oil and filter change frequen-
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
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
4. Turn OIL FILTER (Figure 4.2) 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). DO NOT FILL ABOVE THE
DIPSTICK "FULL " MARK. Crankcase oil capacity
is 4.0 U.S. quarts (3.8 liters).
Section 4 — Maintenance
Liquid-cooled 30 kW Generators
Figure 4.2 - Oil Filter
After refilling the crankcase with oil, always
check oil level on dipstick. NEVER OPERATE
ENGINE WITH OIL BELOW THE DIPSTICK "ADD"
7. Start engine and check for oil leaks.
4.5.11 CHANGING THE ENGINE AIR CLEANER
To replace the engine air cleaner, (part number
059402), remove the air cleaner cover and replace
the air filter making sure it is positioned properly
before reattaching the cover (Figure 4.3).
Figure 4.3 – Engine Air Cleaner
See the "Service Schedule," Section 6, for air cleaner