Generac Power Systems NP-40G - Manual (Page 35)

Section 2.1- GENERAL INFORMATION
Recommended Fuels
GASOLINE FUEL SYSTEMS:
For models equipped with a gasoline fuel system, the
use of clean, fresh, UNLEADED, regular grade gasoline
Is recommended. Unleaded gasoline burns cleaner, ex­
tends engine life, and promotes better starting by reduc­
ing carbon deposits In the combustion chamber.
Leaded "Regular* grade gasoline may be used if un­
leaded gasoline Is not available.
The use of gasohol is NOT recommended. If it must be
used, it should not contain more than 10 percent ethanol.
When gasoline containing ethanol is used, special care
Is required when preparing the unit for storage (see
"Storage Instructions").
DO NOT USE GASOLINE CONTAINING METHANOL.
DO NOT MIX OIL WfTH THE GASOLINE.
DANGERl
GASOLINE IS EXTREMELY FLAMMABLE AND
ITS VAPORS ARE EXPLOSIVE. DO NOT PERMIT
SMOKING, OPEN FLAME, SPARKS OR ANY
SOURCE OF HEAT IN THE VICINITY WHILE HAN­
DLING GASOLINE. AVOID SPILLAGE OF GASO­
LINE ON A HOT ENGINE. THERE MUST BE NO
LEAKAGE OF GASOLINE INTO THE RV GENER­
ATOR COMPARTMENT.
GASEOUS FUEL SYSTEMS:
Some RV generator models may be equipped with an
LP or natural gas fuel system. The use of such gaseous
fuels may result in a slight power loss as compared to
gasoline. However, that disadvantage is usually com­
pensated for by the many advantages offered by such
fuels. Some of these advantages are:
D A low residue content which results In minimum
carbon formation In the engine,
n Reduced sludge buildup in the engine oil.
n Reduced burning of valves as compared to gasoline.
D No "washdown" of the engine cylinder wall during
cranking and startup.
D Excellent anti-knock qualities,
n A nearly homogenous mixture in the engine cylin­
der.
□ Fuel can be stored for long periods without break­
down.
DANGERl
GASEOUS FUELS ARE HIGHLY VOLATILE AND
THEIR VAPORS ARE EXPLOSIVE. LP GAS IS
HEAVIER THAN AIR AND WILL SETTLE IN LOW
AREAS. NATURAL GAS IS LIGHTER THAN AIR
AND WILL ACCUMULATE IN HIGH AREAS. EVEN
THE SLIGHTEST SPARK CAN IGNITE THESE
FUELS AND CAUSE AN EXPLOSION. THE USE
OF LEAK DETECTORS IS RECOMMENDED
WHEN GASEOUS FUELS ARE USED. ALL
CODES, STANDARDS AND REGULATIONS PER­
TAINING TO THE INSTALLATION AND USE OF
GASEOUS FUELS MUST BE COMPLIED WITH.
Recommended Engine Oil
Use a clean, high quality, detergent oil that Is
classified "For Service SC, SD, SE, SF or SG". Use
no special additives with the oil.
G During summer months (above 32* F. or 0* C.), use
SAE 30 oil. SAE 10W-30 oil Is an acceptable substi­
tute.
G During winter months (below 32* F. or 0* C.), use SAE
5W-20 or 5W-30 oil.
G DONOTUSESAE10W-40OIL.
Engine crankcase oil capacity without oil filter change
is about 29 fluid ounces (850ml).
Engine crankcase oil capacity (with oil filter change)
is about 1 U.S. quart (946ml).
Change engine oil and the oil filter after the first eight
(8) hours of operation. Thereafter, change engine oil and
oil filter every 50 operating hours.
NOTE: Additional Information on the engine oil
system can be found In Part 5 of this manual,
"Engine Oil and Cooling System".
Storage Instructions
PREPARATION FOR STORAGE:
The engine should be started at least once every
seven (7) days and allowed to run for at least thirty (30)
minutes. If this cannot be done and the engine is to
remain unused longer than thirty (30) days. It must be
prepared for storage. To prepare the unit for storage,
proceed as follows:
1. Start the engine and let It warm up.
2. After engine Is thoroughly warmed up, shut It down.
NOTE: If the unit Is equipped with a gasoline fuel
system and GASOHOL was used as a fuel, turn off
the supply of fuel to the engine and let It run out of
gas.
3. While engine Is still warm from running, completely
drain the oil. Then, refill with the recommended oil. See
"Recommended Engine Oil".
4. Attach a tag to the engine Indicating the viscosity and
classification of the oil m the crankcase.
5. Remove the spark plug and pour about one (1) ounce
(15ml) of clean, fresh engine oil into the spark plug
threaded opening. Crank the engine several times to
distribute the oil, then Install and tighten the spark plug.
6. Remove the battery and store It In a cool, dry room on
a wooden board. Never store the battery on any concrete
or wood floor.
7. Clean and wipe the generator exterior surfaces.
RETURN TO SERVICE AFTER STORAGE:
To return the unit to service after storage, proceed as
follows:
1. Verify that the correct oil is In the engine crankcase by
checking the tag on the engine (see "Recommended
Engine Oil".) If necessary, drain oil and refill with the
recommended oil.
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