Generac Power Systems 941-2 - Manual (Page 39)

Section 2.1
GENERAL INFORMATION
Engine crankcase oil capacity without oil filter change
is about 29 fluid ounces (850m.
Engine crankcase oil capacity (with oil filter change) is
about 1 U.S. quart (946m1).
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 stor-
age, 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 classifi-
cation of the oil in the crankcase.
5. Remove the spark plug and pour about one (1) ounce (15m1)
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 wood-
en 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 check-
ing the tag on the engine (see "Recommended Engine Oil".) If
necessary, drain oil and refill with the recommended oil.
2. Check the battery. Fill all battery cells to the proper level with
distilled water. DO NOT USE TAP WATER IN THE BATTERY.
If necessary, recharge the battery to a 100 percent state of
charge or replace it, if defective.
3. Turn OFF all electrical loads. Start the engine at no load and
let it warm up.
4. Apply electrical loads to at least 50% of the unit's rated
capacity.
5. When engine is thoroughly warmed up, turn off or disconnect
all electrical loads. Then, shut the engine down.
THE UNIT IS NOW READY FOR SERVICE.
ENGINE TUNE-UP
The following procedure may be used as a minor
tune-up. On completion of the procedure, the engine
should run properly. If it does not run properly, addi-
tional checks and repairs are required.
1. Service and repair engine air cleaners, as necessary.
2. Check engine oil level and condition of oil. Add or change oil as
required.
3. Remove shrouding and clean away dirt from the engine cylin-
der head and cooling fins.
4. Check fuel filters and clean or replace as necessary.
5. Replace the spark plug with a Champion RC12YC (or equiva-
lent) plug.
a. Set spark plug gap to 0.030 inch (0.76mm).
b. Install new plug and tighten to 13 foot-pounds
(1.8 N-m).
c. If a torque wrench is not available, tighten spark
plug as tight as possible with fingers and then
(1) If plug Is RE-USED, tighten about 1/4 turn
more with a wrench.
(2) If plug is NEW, tighten it about 1/2 turn
more with a wrench.
6. Check that wiring is free of breaks, abrasions and are properly
routed.
7. Check for spark as outlined in "Ignition" section of Part 6 of this
manual.
8. Run engine, adjust carburetor if necessary and check opera-
tion.
Page 2.1-3