Onan NHC Series Operator's/Service Manual And Parts Catalog page 149

SPECIFICATIONS
NHC-MS/1
Number of Cylinders . ^
Displacement (cubic inch) • 60
Cylinder Bore , 3-9/16 in.
Piston Stroke 3 inch
Horsepower . . . . 25 BHP § 3600 rpm
Compression Ratio 7.0 to 1
Ventilation Required (cfm @ 3600 rpm) . • • • • 1 0 8 0
Oil Capacity / 3-1/2 qt.
Oil Capacity With Filter Change 4 qt.
Starting . Electric
Ignition • B a t t e r y
Combustion Air (cfm @ 3600 rpm) 8 0
Fuel • • • Gasoline (regular grade)
Fuel Pump . ' . . . . . Diaphragm, 4 f t . lift
TUNE-UP SPECIFICATIONS
Spark Plug Gap '
0 2 5
' '
Breaker Point Gap . . .020"
Ignition Timing (Fixed), Electric Start Units . 25 0 BTC
Tappets (Cold) Intake • - O 0 3 ^
Exhaust .012"
NOTE: For gaseous fuel operation set spark plugs at .018"and ignition timing at 26 0 BTC and exhaust valve
lash at .014".
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