Onan NH Series Operator's Manual And Parts Catalog

!
DI'NENSIONS
AND
CTEARANCES
ALL
CLEARANCES GIVEN AT
All dinen s ion s in inches
V
alve T appet Clearance
ln
lake
.
E xhaust
.
Valve Stem in Guide
-
Intake
Valve
Stem
in Guide
-
Exhaust
Valve Spring
Length
Free
Lenglh.
C
ompr essed
Lenglh
.
Valve Spring Tension (lb.
)
Open
C
losed
Valve Seat Bore
Diametet
lnl
ake .
Exhaust.
Va 1ve Seat
Diameter
lnt
ake
,
Exhausl
.
Val
i,e
Slem Diameter
Intake.
Exhaust
Valr e Guide
Drameter
(1.D.)
Valve
Lifter
Diameter
V alve Lifter
Bore
V alve Seat lnlcrference
liidlh
Valve F ace Angle
V alve
Seat Angle
V alve
Interference
Ang
Ie.
Cranksha!
Main
Bearing .
Crankshaft
ti
nd Play
Camshafl Bearing
Camshafl
lind
Play
(
umshaft Lrft
Camshaft Bc.rring
D iameter
C amshalt
J
ournal
Diameter
I?od Beari ng
(Forged Rod)
Connecting
Rod
End
Play
(Ductile lron).
'I'i
miog
Gear
Backlash
Oil Pump
Gear Backlash.
I)is1on
to
Cylinder,
Strut Type (Measured
below oil-controlling
ring
-
90
from pin)
Clearance
l)iston
Pio
[)iameter
Pi
st on Pin in
Piston.
Pist on
Pin in
Rod
Piston
Ring
Groove
Width
Top
l.
Top2.
Top3.
Piston
Ring Gap
in Cylinder.
Piston
Ring
Side
Clearance (Top
compression
ring
only)
Breaker Point
Gap (Full
Separation).
Spark Plug
Gap
-
For
Gasoline
Fuel
ROOM TEMPERATURE
OF
70"F
unless olherwise
soec i{ied.
Minimum Moximum
0.003
*
7l
38
0.0010
0.0025
1.5645
1
.2510
1.569
0.3125
0.3410
0.344
0.7475
0.75 05
r/32
0.002s
0.005
0.0015
0.003
1.3760
1.3740
0.0005
0.002
0.002
0.002
0.0 015
0.75
00
0.0001
0.095 5
0.0955
0.1880
0.010
0.006
0.020
0.025
0.010+
0.0025
0.0M0
1.662
1.375
79
42
1.5655
1.2s20
1.570
t.256
0.34 3
0
0.3415
0.34 6
0.74 80
0.7s
15
3/64
44"
45"
0.003 8
0.009
0.003
0
0.03 3
1.3770
r.3745
0.0023
0.016
0.003
0.005
0.0035
0.7502
Thumb Push
Fi t
0.0005
0.0965
0.0965
0.1890
0.020

Onan NH Series Specifications

General

Brand	Onan
Model	NH Series
Category	Inverter
Language	English