Battery Maintenance - Generac Power Systems 20 kW Synergy Owner's Manual

Maintenance
5. Loosen the rocker jam nut (C) using a 13 mm
wrench.
.
E
C
Figure 4-9. Valve Clearance Adjustment
6. Turn the pivot ball stud (D) using a 10 mm Allen
wrench while checking clearance between the
rocker arm (E) and the valve stem (F) with a feeler
gauge. Adjust clearance as per Specifications.
NOTE: Hold the rocker arm jam nut in place as the pivot
ball stud is turned.
7. When valve clearance is correct, hold the pivot ball
stud (B) in place with a wrench and tighten the
rocker arm jam nut. Tighten the jam nut to 174 in-
lbs (19.68 Nm).
8. After tightening the jam nut, recheck valve
clearance to verify it did not change.
9. Install new valve cover gasket.
10. Install the valve cover. Tighten fasteners in a cross
pattern, torquing to 60 in-lbs (6.8 Nm).
NOTE: Start all four screws before tightening, or it will
not be possible to get all the screws in place. Verify the
valve cover gasket is in place.
11. Install spark plugs and torque to 18 ft-lbs (25 Nm).
12. Attach the spark plug wire to the spark plug.
13. Connect the AVR fan to the AVR using the three
screws.
14. Connect the 4-pin connector to the AVR.
15. Install AVR filter housing so the bottom drops into
the slots, ensuring that the rubber boot is
completely around the fan opening. Install screw to
fasten AVR filter housing to back panel and torque
to 50–96 in-lbs (6–11 Nm)
16. Repeat the process for the other cylinder if
necessary.

Battery Maintenance

The battery should be regularly inspected per the
Service Schedule. Contact an IASD for assistance if
necessary.
30
Proceed as follows to inspect the battery:
1. Press the OFF button to shut down the generator,
then lift the lid and remove the front panel.
D
NOTE: Allow the AVR to complete its cool down before
disconnecting power to prevent machine damage or
injury.
2. Remove the 7.5 amp fuse from the control panel.
F
3. Remove the intake side panel. (See
Panel Removal.)
4. See Figure
charger cable.
5. See Figure
002380 cables for tightness and corrosion. Tighten and
clean as necessary.
6. (Unsealed batteries only): Completely disconnect
the battery. Check the battery fluid level and, if
necessary, fill with distilled water only. DO NOT
use tap water. Also, have an IASD or a qualified
service technician check the state of charge and
condition.
7. When inspection is complete, reconnect the battery
cables, the battery charger cable, install the intake
side panel, and install the 7.5 amp fuse.
8. Install the front panel and close the generator lid.
9. Place the controller in AUTO mode.
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.
Owner's Manual for 60 Hz Synergy™ Generators
4-1. Disconnect the white battery
4-10. Inspect the battery posts and
Figure 4-10. Battery Cables
WARNING
WARNING
Intake Side
001832
(000162)
(000137a)