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6 Generac
®
Power Systems, Inc.
Section 1 – General Information
PRIMEPACT 50 Recreational Vehicle Generator
NOTE:
Using unleaded gasoline contributes to longer
engine valve life by reducing lead and carbon
deposits.
Generac does not recommend using any
gasoline containing alcohol (such as “gasohol”).
If you use any gasoline containing alcohol, it
must not contain more than 10 percent ethanol,
and it must be removed from the generator
during storage. Do NOT use any gasoline
containing methanol. If you use gasoline with
alcohol, inspect more frequently for fuel leaks
and other abnormalities.
1.5.2 OPTIONAL PROPANE FUEL SYSTEM
The PRIMEPACT 50LP series generator is equipped
with a liquid propane (LP) gas fuel system. LP gas is
usually supplied as a liquid in pressure tanks.
PRIMEPACT series generators require a vapor with-
drawal type fuel system. This type of gaseous fuel sys-
tem uses the vapors forming above the liquid fuel in
the storage tank. Air temperature around the storage
tank must be high enough to sustain adequate fuel
vaporization. In colder climates, you may need to use
an independent heat source to be sure the fuel suffi-
ciently vaporizes in the storage tank.
LP gas may consist of propane, butane or a mixture
of the two gases. Propane vaporizes at temperatures
as low as -20° F (-29° C), but butane returns to its liq-
uid state when the temperature drops below about
32° F (0° C). For that reason, a higher ratio of
propane is desired in the gas mixture when tempera-
tures drop below freezing.
1.5.3 FUEL CONSUMPTION
Gasoline is in gal/h.
LP is in gal/h and cf/h.
1.5.4 ENGINE OIL REQUIREMENTS
Use only high quality detergent oil rated with
American Petroleum Institute (API) Service
Classification SF, SG or SH. The recommended oil
weights include the following:
• During summer months: SAE 30. An acceptable
substitute is SAE 10W-30.
• During winter months: SAE 5W-30. DO NOT USE
SAE 10-W40.
Crankcase and oil filter capacity is approximately
1,400 mL or 1.5 U.S. quarts. Do NOT use special
additives. See Sections 3.1 and 3.2 (Page 12) for oil
level check and fill procedures.
1.5.5 ENGINE
Type of Engine ....................................GN-410, Single-cylinder
Cooling Method..........................................................Air-cooled
Rated Horsepower..........................................15 @ 4,200 rpm
Displacement....................................................................407cc
Cylinder Block ..........................Aluminum w/Cast Iron Sleeve
Type of Governor ..............................Mechanical, Fixed Speed
Air Cleaner..........................Paper Element w/Foam Precleaner
Starter..........................................................12-volt DC Electric
Ignition System........................Solid-state w/Flywheel Magneto
Recommended Spark Plug
Champion ..................................................................RC12YC
AC....................................................................................R45S
Fram Autolite ......................................................................65
Spark Plug Gap ........................................0.030 inch (76 mm)
Recommended Minimum Battery ..............400 Cold-cranking
Amperes
1.5.6 GENERATOR
Rated Maximum Continuous
AC Output (Gasoline) ............................4,800 Watts (4.8 kW)
AC Output (LP Fuel) ..............................4,500 Watts (4.5 kW)
Rated Voltage ......................................................120 Volts AC*
Rated Maximum Continuous
AC Current (Gasoline)......................................40 Amperes**
AC Current (LP Fuel) ....................................37.5 Amperes**
Phase ................................................................................Single
Rotor RPM ........................................................................3,600
Number of Rotor Poles ............................................................2
Engine RPM ......................................................................2,571
Rated AC Frequency ........................................................60 Hz
Battery Charge Voltage............................................14 Volts DC
Battery Charge Current..................................2 Amperes (max)
Weight
Gasoline................................................................198 Pounds
LP Fuel..................................................................200 Pounds
Length ....................................................25.5 inches (648 mm)
Width....................................................18.88 inches (479 mm)
Height ..................................................16.75 inches (425 mm)
*All units are reconnectable to 120- and/or 240-volt, dual voltage
output. Units are no longer listed per RVIA/ANSI when recon-
nected for dual voltage output.
**If reconnected for dual voltage, the ampere rating for 240 volts is
20 AC amperes for model PRIMEPACT 50 (02010-0), and 18.8
AC amperes for model PRIMEPACT 50 LP (04164-0).
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Model No Load Full Load
PRIMEPACT 50 (02010-0) 0.32 0.76
PRIMEPACT 50 LP (04164-0) 0.47/17.05 1.25/45.35