Lubrication Standards; Fuel System Standards - Honda Nighthawk CB 750 1991 Service Manual

General
I n f o r m a t i o n
0 20
40 60 80
100 ' F
-ZU -10 0 1 0 20 30 40 .C
Oil pressure (80'C/176'F)
Lubrication Unit:mm(ir
Oil pump rotor tip clearance@)
body clearanceQ
end clearance
Item
Engine oil capacity at draining
at disassembly
at oil filter change
Recommended engine oil
OIL VISCOSITIES
I I
I
I I
. .
b
I
Other viscosities shown in the chart may
I
I
be used when the average temperature
in your riding area is within the indicated
range.
Standard
2.7 lit. (2.8 USqt, 2.4 Imp qt)
3.6 lit. (3.8 US qt, 3.2 Imp qt)
2.9
lit.
(3.0 US qt, 2.6 Imp qt)
Use Honda 4-stroke Oil or equivalent
API Service Classification: SF or SG
Viscosity: SAE 1 OW-40
630 kPa (6.3 kg/cm2, 90 psi) at 6,000
rpm
0.15 (0.006)
0.1 5-0.22 (0.006-0.009)
0.02-0.07 (0.001 -0.003)
Service Limit
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Fuel System
Carburetor identification number (A model)
(AC model)
(CM model)
Main jet (A model)
(AC model)
(CM model)
(High altitude)
(2. 3)
(1. 4)
(Front)
(Rear)
Slow jet
Jet needle clip position
Pilot screw initial opening (A model)
(AC model)
(CM model)
Pilot screw high altitude adjustment (A model)
(AC model)
Pilot screw final opening
(A model)
(AC model)
(CM model)
Air screw initial opening
Air screw high altitude adjustment
Float level
Carburetor vacuum difference
Base carburetor (For carburetor synchronization)
Idle speed
Trottle grip free play
Accelerator pump clearance
Secondan/ air supply system
PAIR control valve vacuum pressure
VE66B
VE77C
VE66C
B l l 2
B l l O
# I 1 0
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$35
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See page 5-1 2
See page 5-1 2
2-3/8 turns out
See page 5- 13
See page 5-1 3
See page 5-1 2
See page
5-
12
1 /2 turn out
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18.5 (0.73)
Within 30 mmHg (1.2 inHg)
No.2 carburetor
1,000+ 100 rpm
2-6 (0.08-0.24)
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PAIR check valvesand PAIR control valve
270 mmHg (10.63 inHg)
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