Onan NH Series User Manual

SPECIFICATIONS
Nominal dimensions of set (inches)
6.5 NH (Prior Spec D) -... 20-13/16" H x 20-9/16" W x 29-9/16" L
6.5 NH (Begin Spec D) 20-13/16" H x 20-9/16" W x 29-5/8" L
6.5 NH (Contractor Model) 31" H x 28" W x 36" L
Number of cylinders (horizontally opposed) 2
Cubic inch displacement 60
Cylinder bore (inches) 3.562
Piston stroke (inches) 3.000
RPM (60 hertz) 1800
RPM (50 hertz) 1500
Compression ratio 7:1
Oil capacity (quarts) 4
with filter 4.5
Ignition
Remote starting Battery
Electric starting Flywheel magneto
Battery voltage 12
Battery size 72 AH
Battery charge rate (amperes) Prior Spec. D 5-Hi
Begin Spec D 1.5 to 6
Contractor Model 1.5 to 2
Ventilation Required (cfm 1800 rpm)
Engine (Pressure cooling) 570
Engine (Vacu-Flo cooling) 650
Generator 100
Combustion 25
AC voltage regulation in ±% 7
AC frequency regulation in % 5
Rating (output in watts)
50 hertz (General utility rating) 5500
60 hertz (General utility rating) 6500
Spark Plug Gap — Gasoline 0.025
Spark Plug Gap — Gaseous Fuel 0.018
NOTE: Hertz is a unit of frequency equal tb one cycle per second.
TUNE-UP SPECIFICATIONS
Spark Plug Gap
Gasoline
025
"
Gaseous
018
"
Breaker Point Gap
020
"
Ignition Timing
220
Tappet Adjustment (engine cold)
Intake 003"
Exhaust 010"

Onan NH Series Specifications

General

Frequency	60 Hz
Engine Type	4-Cycle
Fuel Type	Gasoline
Starting System	Electric
Voltage	120/240V
Noise Level	72 dB(A) at 7 meters
Fuel Consumption	0.5-1.0 gal/hr (gasoline)