Generac Power Systems 004916-0 用户手册

  

17

• Loosen the rocker jam nut. Use an 10mm allen 

wrench to turn the pivot ball stud while checking 
clearance between the rocker arm and the valve 
stem with a feeler gauge. Correct clearance is 
0.002-0.004 inch (0.05-0.1 mm).

NOTE:

Hold the rocker arm jam nut in place as the pivot 
ball stud is turned.

When valve clearance is correct, hold the pivot ball 
stud in place with the allen wrench and tighten the 
rocker arm jam nut. Tighten the jam nut to 174 
in.lbs. torque. After tightening the jam nut, recheck 
valve clearance to make sure it did not change.

•  Install new valve cover gasket.
•  Re-attach the valve cover.

NOTE:

Start all four screws before tightening or it will not 
be possible to get all the screws in place. Make 
sure the valve cover gasket is in place.

•  Re-attach the spark plug wire to the spark plug.
•  Repeat the process for the other cylinder.

Air inlet and outlet openings in the generator com-
partment must be open and unobstructed for con-
tinued proper operation. This includes such obstruc-
tions as high grass, weeds, brush, leaves and snow.

Without sufficient cooling and ventilating air flow, the 
engine/generator quickly overheats, which causes it 
to quickly shut down. (See Figure 4.7 for vent loca-
tions.)



AIR

OUTLET



If the generator has been submerged in water, 
it MUST NOT be started and operated. Following any 
submersion in water, have an Authorized Dealer thor-
oughly clean and dry the generator.

Periodically wash and wax the enclosure using auto-
motive type products. Frequent washing is recom-
mended in salt water/coastal areas. Spray engine 
linkages with a light oil such as WD-40

®

.

If the generator cannot be exercised every seven days, 
and will be out of service longer than 90 days, pre-
pare the generator for storage as follows:

1.  Start the engine and let it warm up.
2.  Close the fuel shutoff valve in the fuel supply line 

and allow the unit to shut down.

3.  Once the unit has shut down, it will signal a low 

oil fault.

4.  Set the AUTO/OFF/MANUAL switch to OFF and 

turn off the utility power to the transfer switch. 
Remove the 7.5A and 15A fuses from the genera-
tor control panel. Disconnect the battery cables 
as outlined in “General Hazards” (page 2).

5.  While the engine is still warm from running, 

drain the oil completely. Refill the crankcase with 
oil. See ”Engine Oil Recommendations,” Section 
4.3.1.

6.  Attach a tag to the engine indicating the viscosity 

and classification of the oil in the crankcase.

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