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6 Generac
®
Power Systems, Inc.
Section 1 – General Information
PRIMEPACT 50 and 70 (50Hz) Recreational Vehicle Generators
1.6 SPECIFICATIONS
1.6.1 FUEL REQUIREMENTS
These generators are equipped with a gasoline fuel sys-
tem. Depending on the installation, the generator may
have either a separate fuel tank, or it may “share” the
vehicle engine’s fuel tank.
NOTE:
Some installations using a “shared” fuel tank may
have a generator fuel pickup tube that is shorter
than the vehicle engine’s pickup tube. Such an
arrangement causes the generator engine to “run
out of gas” while adequate fuel for the vehicle
remains in the tank.
To reduce lead and carbon deposits use high quality
UNLEADED gasoline with the generator. Leaded REG-
ULAR grade gasoline is an acceptable substitute.
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.
1.6.2 ENGINE OIL REQUIREMENTS
Use only high quality detergent oil classified “For
Service SF” and with an oil viscosity rating of SAE
10W-30 oil. Do not pour in any additives to the rec-
ommended oil. Engine crankcase capacity is 1.4
liters. See Section 3.2 on page 11 for oil level check
and filing procedures.
1.6.3 ENGINE
Type of Engine ......................................GN-480, Twin-cylinder
Cooling Method..........................................................Air-cooled
Rated Horsepower..........................................16 @ 3,600 rpm
Displacement....................................................................480cc
Compression Ratio........................................................8.6 to 1
Cylinder Block ..........................Aluminum w/Cast Iron Sleeve
Type of Governor ..............................Mechanical, Fixed Speed
Engine Governor Speed ............................................3000 rpm
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 (0.8 mm)
1.6.4 GENERATOR PP50G/PP70G
Rated Maximum Continuous
AC Output ....................5,000 (5.0 kW)/7,000 Watts (7.0 kW)
Rated Voltage ..............................................................230 Volts
Rated Maximum Continuous
AC Current ................................21.8 Amperes/30.4 Amperes
Phase ................................................................................Single
Rotor RPM ........................................................................3,000
Number of Rotor Poles ............................................................2
Engine RPM............................................................2,900/3,000
Rated AC Frequency ........................................................50 Hz
Weight......................................................................222 Pounds
Length........................................................25 inches (635 mm)
Width ..................................................18.5 inches (469.9 mm)
Height..............................................16.75 inches (425.45 mm)
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