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Optional Parts List
Technical Information
143
Optional Parts List
These parts and tools may be ordered from your
authorized dealer.
* Your CRF dose not conform to AMA noise emission
regulation for 2019 year.
An optional AMA noise emission regulation conformed
muffler may be available. Contact your dealer
.
CARBURETOR Remarks
Main jet
(Standard: #140)
#128 – #148 (in
increments of 2 or 3)
Slow jet
(Standard: #38)
#35 – #42
(in increments of
2 or 3)
Jet Needle
Standard needle: NMQT
Straight diameter: ø2.775 mm)
Specific flow
characteristics
at 1/16 to 1/4
throttle
Jet needle
number
(standard
series)
Jet needle
number
(1/2 clip
position leaner
than standard
at 1/8 to 3/4
throttle)
Rich
NMQR
ø2.755 mm
NMRR
ø2.755 mm
NMQS
ø2.765 mm
NMRS
ø2.765 mm
(standard
needle)
NMQT
ø2.775 mm
NMRT
ø2.775 mm
NMQU
ø2.785 mm
NMRU
ø2.785 mm
Lean NMQV
ø2.795 mm
NMRV
ø2.795 mm
MARK
CARBURETOR Remarks
Fuel flow amount Leak jet number
decrease #75
#70
#65 (standard)
#60
increase #55
MUFFLER* Remarks
AMA Noise Emission
Regulation
Conformed Muffler
Using an optional muffler,
change the carburetor
settings.
See page 118 for more
details.
FRAME Remarks
Driven
sprocket
CRF150R
< >:
Drive chain links
49T, Aluminum
<
120
>
50T, steel <120> (standard)
50T, Aluminum
<
120
>
51T, Aluminum
<
120
>
CRF150RB
< >:
Drive chain links
55T, Aluminum
<
126
>
56T, steel <126> (standard)
56T, Aluminum
<
126
>
57T, Aluminum
<
126
>
Drive
chain
Standard
DID420DS3:
120 Links (CRF150R)
126 Links (CRF150RB)
Optional DID420DS3: 130 Links
TOOLS Remarks
Workstand For maintenance
Pin spanner A To adjust spring preload
Pin spanner B To torque the shock spring lock
nut
31KSE7100_NA.book 143 ページ ２０１９年４月９日 火曜日 午後１時１３分
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