Adjustments for Competition
89
Carburetor Adjustments & Tuning Tips
Jet Needle
The jet needle controls fuel/air mixture over 1/16
to 3/4 throttle. The straight section (1) affects
throttle response at smaller throttle openings. By
changing the position of the clip (2) in its groove,
you can improve acceleration at medium low and
medium speed.
(1) straight section
(2) clip
Slow Jet and Air Screw
Refer to Carburetor Minor Adjustments (Page
91).
Standard Tuning Recommendations
For the following recommendations to be
accurate, you must use the standard settings as a
baseline. Also, don’t change any of the settings
until you’ve determined what changes are
necessary.
(2)
(1)
LEANER
RICHER
1st
2nd
3rd
4th
5th
Adjustment
Air screw opening
Slow jet
Jet needle
Needle clip position
Main jet
Float level
Identification number
Standard settings
2 turns out
#45
NFSF
3rd groove from top
#142
0.75 in (19.0 mm)
PWK10A
Legend
AS: Air Screw opening from fully seated
SJ: Slow Jet
NC: Needle Clip position
JN: Jet Needle
MJ: Main Jet
All jetting is based on
• Standard Jetting
• 32:1 Fuel/Oil Ratio
• Unmodified Engine (Including Porting, Exhaust and Timing)
TEMPERATURE
ALTITUDE
3050m
(10,000 ft)
to
2300m
(7,500 ft)
2299m
(7,499 ft)
to
1500m
(5,000 ft)
1499m
(4,999 ft)
to
750m
(2,500 ft)
749m
(2,499 ft)
to
300m
(1,000 ft)
299m
(999 ft)
to
0m
Sea Level
Cent
FAHR.
AS:
SJ:
NC:
JN:
MJ:
AS:
SJ:
NC:
JN:
MJ:
AS:
SJ:
NC:
JN:
MJ:
AS:
SJ:
NC:
JN:
MJ:
AS:
SJ:
NC:
JN:
MJ:
–30 ~ –17°
–21 ~ 0°
2
45
3
NBKF
142
1 3/4
45
3
NBKF
145
2
48
3
NBKE
148
1 3/4
48
4
NFSE
150
1 1/2
48
4
NBKE
152
–18 ~ –6°
–1 ~ 20°
2
45
3
NFSF
142
2
45
3
NBKF
142
1 3/4
45
3
NBKF
145
2
48
3
NBKE
148
1 3/4
48
4
NFSE
150
–7 ~ 5°
19 ~ 40°
2 1/4
45
2
NBKF
140
2
45
3
NFSF
142
2
45
3
NBKF
142
1 3/4
45
3
NBKF
145
2
48
3
NBKE
148
4 ~16°
39 ~ 60°
2 1/2
45
2
NBKG
138
2 1/4
45
2
NBKF
140
2
45
3
NFSF
142
2
45
3
NBKF
142
1 3/4
45
3
NBKF
145
15 ~ 27°
59 ~ 80°
2 3/4
45
2
NSFG
135
2 1/2
45
2
NBKG
138
2 1/4
45
2
NBKF
140
2
45
3
NFSF
142
2
45
3
NBKF
142
26 ~ 38°
79 ~ 100°
3
45
2
NSFG
132
2 3/4
45
2
NSFG
135
2 1/2
45
2
NBKG
138
2 1/4
45
2
NBKF
140
2
45
3
NFSF
142
37 ~ 49°
99 ~ 120°
3
42
1
NBKG
130
3
45
2
NSFG
132
2 3/4
45
2
NSFG
135
2 1/2
45
2
NBKG
138
2 1/4
45
2
NBKF
140
ST
AND
ARD
SETTING
CR85R/080-098 05.6.8 2:27 PM ページ 89
Summary of Contents for 85RB EXPERT 2006
Page 1: ...2006 Honda CR85 85RB EXPERT OWNER S MANUAL COMPETITION HANDBOOK CR85 000 023 05 6 8 2 18 PM a...
Page 14: ...10 Before Riding CR85 000 023 05 6 8 2 19 PM 10...
Page 108: ...104 Tips CR85R 099 104 05 6 8 2 28 PM 104...
Page 122: ...118 Technical Information Wiring Diagram CR85R 105 130 05 6 8 2 29 PM 118...
