Generac Power Systems G0071450, Руководство пользователя

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Maintenance
Owner’s Manual for 50 Hz Air-Cooled Generator Sets 33
Adjusting Valve Clearance
Proceed as follows to adjust the valve clearance:
1. Perform “To turn the generator set OFF” in Gener-
ator Set Enable/Disable Procedure .
2. Remove front access panel and intake side panel
as described in
Remove Front Access Panel and
Remove Intake Side Panel .
3. Turn off generator set fuel supply and disconnect
negative battery cable to avoid accidental start-up.
4. Remove spark plug wires and position wires away
from spark plugs.
5. Remove spark plugs using a 13/16 in socket
wrench (8 kVA) or a 5/8 in socket wrench (10–13
kVA).
6. Use a 10 mm socket wrench to remove the four
screws attaching valve cover. Remove and discard
gasket.
7. Verify piston is at TDC of its compression stroke
(both valves closed).
8. See Figure 4-6 . Loosen rocker jam nut (C) with a
10 mm wrench (8 kVA units) or 13 mm wrench (10–
13 kVA units).
.
9. Turn pivot ball stud (D) using a 10 mm wrench (8
kVA units) or 13 mm wrench (10–13 kVA units)
while checking clearance between rocker arm (E)
and valve stem (F) with a feeler gauge. Adjust
clearance as per
Specifications .
NOTE: Hold rocker arm jam nut in place as pivot ball
stud is turned.
10. When valve clearance is correct, hold pivot ball
stud (D) in place with a wrench and tighten rocker
arm jam nut. Tighten jam nut to:
11. After tightening jam nut, verify valve clearance did
not change.
12. Install new valve cover gasket.
13. Install valve cover. Tighten fasteners in a cross pat-
tern to 6.8 Nm (60
in-lbs ).
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.
14. Repeat process for the other cylinder if necessary.
15. Install spark plugs and tighten to 25 Nm (18 ft-lbs).
16. Attach spark plug wires to spark plugs.
17. Connect negative battery cable and turn on gener-
ator set fuel supply.
18. Install intake side panel and front access panel.
19. Perform “To turn the generator set back ON” in
Generator Set Enable/Disable Procedure .
Battery Maintenance
Model Torque
8 kVA 8.2 Nm (72 in-lbs )
10-13 kVA 19.68 Nm (174 in-lbs )
ISO000138a
Batteries contain sulfuric acid and can
cause severe chemical burns. Wear
protective gear when working with
batteries.
ISO000137a
Batteries emit explosive gases while
charging. Keep fire and spark away.
Wear protective gear when working with
batteries.
ISO000164
Disconnect battery ground terminal
before working on battery or battery
wires.
ISO000537
Wear full eye protection and
protective clothing.
ISO000536
Wear rubber gloves and boots when
working with batteries.
ISO000535
Strictly observe the following precautions
when working on batteries.
ISO000130
Disconnect the negative battery cable,
then the positive battery cable, when
working on unit.