Onan NHC Series Operator's/Service Manual And Parts Catalog page 272

SPECIFICATIONS
Number of Cylinders : 2
Displacemenf (cubic inch) 60
Cylinder Bore • . . : • • • • 3-9/16 in.
Piston Stroke 3 i n c h
H o r s e p o w e r — N H C (Pressure Cooled) : • • 25 BHP @ 3600 rpm
H o r s e p o w e r - N H C V (Vacu-Flo Cooled).' 22.5 BHP @ 3300 rpm
Compression Ratio 7.0 to 1
Ventilation Required (cfm @ 3600 rpm) N H C 1080
(cfm @ 3600 rpm) NHCV 1200
Oil Capacity 3-1/2 q u a r t
Oil Capacity with Filter Change 4 quart
Starting • Electric
Ignition Battery
C o m b u s t i o n Air (cfm @ 3600 rpm) 80
Fuel Gasoline (regular grade)
Fuel Pump D i a p h r a g m . 4 ft. lift
Battery 12 Volt
T U N E - U P S P E C I F I C A T I O N S
Spark Plug Gap .025-inch
Breaker Point Gap •. : .016-inch 9
Ignition T i m i n g (Fixed), Electric Start Units .\ 20° BTC •
Tappets (Cold) Intake .003-inch
Exhaust 012-inch