Torque Specifications; Engine Oil Recommendations; Coolant Recommendations; Before Installation - Generac Power Systems 004090-2, 004091-2, 004092-2, 004093-2, 004094-2, 004095-2, 004096-2, 004097-2, 004474-0 Owner's Manual

TORQUE SPECIFICATIONS

Cylinder Head ......................................15 (+ 90° + 90°) ft.lb.
Intake Manifold ..........................................................13 ft.lb.
Exhaust Manifold ......................................................13 ft.lb.

ENGINE OIL RECOMMENDATIONS

The unit has been filled with 15W-40 engine oil at the
factory. Use a high-quality detergent oil classified "For
Service CC, SD, SE, SF ." Detergent oils keep the engine
cleaner and reduce carbon deposits. Use oil having the
following SAE viscosity rating, based on the ambient
temperature range anticipated before the next oil
change:
Temperature
Above 80° F (27° C)
32° to 80° F (-1° to 27° C)
Below 32° F (0° C)
CAUTION: Any attempt to crank or start the
engine before it has been properly serviced with
the recommended oil may result in an engine
failure.

COOLANT RECOMMENDATIONS

Use a mixture of half low silicate, ethylene glycol base
anti-freeze and half soft water. Cooling system capacity
is about 8 U.S. quarts (8.5 liters). Use only soft water
and only low silicate anti-freeze. If desired, add a high
quality rust inhibitor to the recommended coolant mix-
ture. When adding coolant, always add the recom-
mended 50-50 mixture.
®
8 Generac Power Systems, Inc.
Section 1 — General Information
Guardian Liquid-cooled 10 kW, 15 kW, 20 kW and 25 kW Generators
Oil Grade (Recommended)
SAE 30W or 15W-40
SAE 20W-20 or 15W-40
SAE 10W or 15W-40
Do not use any chromate base rust inhibitor with eth-
ylene glycol base anti-freeze or chromiumhydroxide
("green slime") forms and will cause overheating.
Engines that have been operated with a chromate base
rust inhibitor must be chemically cleaned before
adding ethylene glycol base anti-freeze. Using any
high silicate anti-freeze boosters or additives will also
cause overheating. We also recommend that you DO
NOT use any soluable oil inhibitor for this equipment.

BEFORE INSTALLATION

Before installing this equipment, check the ratings of
both the generator and the transfer switch. Read
"Emergency Isolation Method" and "Total Circuit
Isolation Method" in the installation manual (Part No.
079699).
The generator's rated wattage/amperage capacity must
be adequate to handle all electrical loads that the unit
will power. You may have to group the critical (essential)
loads together and wire them into a separate "emer-
gency" distribution panel.
This generator can be installed in conjunction with a
standard Generac "GTS" type transfer switch, if
desired.
The standard transfer switch has no sensing or con-
trolling circuit boards. Instead, the generator control
console houses a "Control Module Assembly", which
controls all phases of operation, including engine start
up and load transfer.