Operating Guide

Maintenance
30 Owner’s Manual for 60 Hz Air-Cooled Generators
Figure 4-8. Valve Clearance Adjustment (20–22 kW)
7. Install replacement valve cover gasket(s).
8. Install
valve cover(s). Tighten fasteners in a cross
pattern, tightening to:
Adjusting Valve Clearance
See Figure 4-7 or Figure 4-8. Proceed as follows to ad-
just valve clearance:
NOTE: Allo
w engine to cool before adjusting valve clear-
ance.
1. Re
move spark plug wire(s) and position wire(s)
away from plugs.
2. Remove s
park plug(s).
3. Remove
the four screws attaching valve cover.
Remove and discard gasket.
4. V
erify piston is at top dead center (TDC) of its com-
pression stroke (both valves closed).
5. L
oosen rocker jam nut (C) using a 10 mm wrench
(10 kW units) or 13 mm wrench (20–22 kW units.)
6. T
urn pivot ball stud (D) using a 14 mm wrench (10
kW units), or 10 mm hex key (20–22 kW units)
while inspecting clearance between rocker arm (E)
and valve stem (F) with a feeler gauge. Adjust
clearance as per Engine.
NOTE: Hold
rocker jam nut in place as pivot ball stud is
turned.
7. Wh
en valve clearance is correct, hold pivot ball
stud (D) in place with a wrench and tighten rocker
arm jam nut. Tighten jam nut according to the fol-
lowing torque specifications:
10 kW 53 in-lbs (6.0 Nm)
20–22kW 174 in
-lbs (19.68 Nm)
8. After tightening jam nut, inspect valve clearance to
verify it did not change.
9. In
stall new valve cover gasket.
10. Insta
ll valve cover. Tighten fasteners in a cross pat-
tern. Tighten to:
NOTE: Start
all four screws before tightening, or it will
not be possible to get all screws in place. Verify valve
cover gasket is in place.
11. Insta
ll spark plugs and tighten to 18 ft-lbs (25 Nm).
12. Atta
ch spark plug wire to spark plug.
13. Rep
eat process for other cylinder if equipped.
Battery Maintenance
10 kW 80 in-lb (9.0 Nm)
20–22kW 60 in-lb (6.8 Nm)
002380
F
C
E
D
WARNING
Risk of Burn. Allow the engine to cool before
performing the following procedure. Failure to
do so could result in serious injury.
(000560)
10 kW 80 in-lbs (9.0 Nm)
20–22kW 60 in-lbs (6.8 Nm)
(000188)
DANGER
Electrocution. Do not wear jewelry while
working on this equipment. Doing so will
result in death or serious injury.
(000162)
WARNING
Explosion. Do not dispose of batteries in a fire.
Batteries are explosive. Electrolyte solution can cause
burns and blindness. If electrolyte contacts skin or eyes,
flush with water and seek immediate medical attention.
(000137a)
WARNING
Explosion. Batteries emit explosive gases while
charging. Keep fire and spark away. Wear protective
gear when working with batteries. Failure to do so
could result in death or serious injury.
(000164)
WARNING
Electrical shock. Disconnect battery ground
terminal before working on battery or battery
wires. Failure to do so could result in death
or serious injury.