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Owner’s Manual for Stationary Emergency Generators 7
A complete specification sheet is included in the documentation provided with the unit at the time of purchase. For
additional copies, consult your local Independent Authorized Service Dealer.
2.3 — Engine Oil Recommendations
To maintain the product warranty, use only genuine Generac replacement parts. Generac maintenance kits include
both the oil filter and air filter, and can be obtained through any Authorized Dealer.
Although the unit is filled at the factory with 5W-20 engine oil, replace with 5W-30 engine oil at the first oil change which
is due at 30 hours break-in. Select a high-quality detergent oil classified “SJ or SH.” Detergent oils keep the engine
cleaner and reduce carbon deposits. After break-in, a synthetic oil that meets or exceeds SAE specifications is recom-
mended. Once synthetic oil is used, it should be used for the life of the generator. It is not recommended to go back to
a mineral oil. Do not use special additives.
NOTE: If not already equipped, it is strongly recommended to use the optional Cold Weather Start Kit for tem-
peratures below 32°F. The oil grade for temperatures below 32°F is 5W-30 synthetic oil.
Figure 2-2. Lubricating Oil Recommendations
Breather Closed Open Closed Open Closed Open
Exhaust Flow at
Rated Output 60 Hz
165 cfm 203 cfm 180 cfm 237 cfm 300 cfm 420 cfm 300 cfm 420 cfm 414 cfm 494 cfm
Exhaust Temperature at Rated
Output
900° F 1100° F 1000° F 1130° F 1075° F 1100° F 1075° F 1100° F 1025° F 1050° F
Electrical System
Battery Charge
Alternator
12V,
30 Amp
12V,
15 Amp
12V,
30 Amp
12V,
15 Amp
12V, 30 Amp
Recommended Battery Group 26 Group 24F Group 26
Static Battery Charger 2.5 Amp
Governor System
Type Electronic
Frequency Regulation Isochronous
Steady State
Regulation
+/- 0.25%
Voltage Regulator
Type Electronic
Sensing Phase Single
Regulation +/- 1%
Fuel System
Operating Pressure 5-14” WC
Model 22 kW 25 kW 27 kW 30 kW 32 kW 36 kW 38 kW 45 kW 48 kW 60 kW
Engine 2.4L 1.5L 2.4L 1.5L 2.4L 2.4L 2.4L 2.4L 5.4L 2.4L
- 20
- 4
5W-30
5W-30 w/ Block Heater
- 40
- 40
- 30
- 22
- 10
14
0
32
10
50
20
68
30
86
40
104
50
122
- 20
- 4
- 40
- 40
- 30
- 22
- 10
14
0
32
10
50
20
68
30
86
40
104
50
122
All Seasons
Arctic Conditions
º C
º F
º C
º F