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16 Generac
®
Power Systems, Inc.
3.7.3 OVERCRANK
This feature prevents the generator from damaging
itself when it continually attempts to start and anoth-
er problem, such as no fuel supply, prevents it from
starting. The unit will crank and rest for a preset time
limit. Then, it will stop cranking, and the LED on the
generator control panel will light indicating an over-
crank failure. The Auto/Off/Manual switch will need
to be set to OFF and then back to AUTO to reset the
generator control board.
NOTE:
If the fault is not repaired, the overcrank feature
will continue to activate.
3.7.3.1 Approximate Crank Cycle Times
• 15 seconds ON
• 7 seconds OFF
• 7 seconds ON
• 7 seconds OFF
• Repeat for 45 seconds
Approximately 90 seconds total
3.7.4 OVERSPEED
This feature protects the generator from damage by
shutting it down if it happens to run faster than the
preset limit. This protection also prevents the gener-
ator from supplying an output that could potentially
damage appliances connected to the generator cir-
cuit. Contact your nearest Generac Authorized Dealer
if this failure occurs.
4.1 FUSE
The generator panel’s 15 amp fuse (Figure 4.1) pro-
tects the DC control circuit against overload. The fuse
is wired in series with the battery output lead to the
panel. If the fuse element has melted open, you can-
not crank or start the engine. You should replace the
fuse using only an identical 15-amp replacement.
The generator panel’s 5 amp fuse protects the battery
charge circuit against overload. If the fuse element
has melted open, you will not have battery charging
capability. You should replace the fuse using only an
identical 5 amp replacement. To remove fuse, push
cap down and rotate counterclockwise.
Figure 4.1 – Generator Control Panel
4.2 CHECKING THE ENGINE
OIL LEVEL
For oil capacities, see “Specifications,” Section 1.5
(Page 6). For engine oil recommendations, see
Section 4.3.1. To check the engine oil level, proceed
as follows (Figure 4.2, on page 17):
1. Start the generator by moving the Auto/
Off/Manual switch to the MANUAL position. Allow
it to run for a short while and then shut it down
by moving the switch to the OFF position.
2. Remove the dipstick and wipe it dry with a
clean cloth.
3. Install the dipstick; then, remove it again. The oil
level should be at the dipstick “Full” mark. If nec-
essary, add oil to the “Full” mark only. DO NOT
FILL ABOVE THE “FULL” MARK.
Never operate the engine with the oil level
below the “Add” mark on the dipstick. Doing
this could damage the engine.
4. Install the dipstick.
5. Reset the Auto/Off/Manual switch to its original
position.
Figure 4.2 — Oil Dipstick and Fill, 8.5 kW
Oil Dipstick
Oil Fill
!
HIGH TEMP.
OVER SPEED
LOW OIL
SYSTEM SET
OVER CRANK
MAN.
SET
OFFAUTO
15A
FUSE
EXERCISE
TIME
R
POWER SYSTEMS, INC.
Locate your nearest dealer at:
R
FUSE
5A
EXERCISER NOT SET
NO UTILITY SE NS E
4FLASHINGREDLEDS=
FLASHING GREEN LED=
Section 4 — Maintenance
Air-cooled 8.5 kW Generator