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136 Technical Information
Specifications
CRF150RB
Item English
2.60 x 1.72 in
0.28 in
0.80 US qt 0.76R
Cylinder arrangement
Bore and stroke
Displacement
Compression ratio
Valve clearance Intake:
Exhaust:
0.006 ± 0.001 in
(0.16 ± 0.03 mm)
0.010 ± 0.001 in
(0.26 ± 0.03 mm)
Engine oil capacity
After draining
After draining and
oil filter change
After disassembly
After disassembly
Transmission oil
capacity
After draining
Type
Identification number
Main jet (standard)
Jet needle (standard)
Piston valve
FCR08D
# 140
NMQT
Needle clip position
(standard)
Slow jet (standard)
Pilot screw opening
Float level
Idle speed
Liquid cooled, 4-stroke
Single 19° inclined from
vertical
0.59 US qt
0.62 US qt
0.74 US qt
0.60 US qt
0.69 US qt
3rd groove
# 38
2 turns out
2,100 ± 100 rpm
Type
Metric
0.56R
0.59R
0.70R
0.57R
0.65R
66.0 x 43.7
mm
7.0 mm
Engine
Carburetor
Cooling System
Coolant capacity
After disassembly
11.7 : 1
Clutch type
Transmission
Primary reduction
Gear ratio I
Gear ratio II
Gear ratio III
Gear ratio IV
Gear ratio V
Final reduction
Item English Metric
Drive train
Electrical
Wet, multi-plate type
5-speed, constant mesh
4.117
2.214
1.647
1.318
1.105
0.956
3.733
Gear shift pattern
Ignition
Starting system
Spark plug :
Standard
ICM
Kickstarter
Left foot-operated return
system 1-N-2-3-4-5
NGK CR8EH-9
DENSO U24FER9
NGK CR9EH-9
DENSO U27FER9
Optional
Spark plug gap
0.031 – 0.035 in
(0.8 – 0.9 mm)
9.13 cu-in 149.7 cm
3
Overall length
Overall width
Overall height
Wheelbase
Seat height
Footpeg height
Ground clearance
Item English
74.8 in
30.3 in
46.1 in
50.6 in
34.1 in
16.3 in
13.2 in
Metric
Type
Dimension
Frame
F. suspension
R. suspension
Front tire
Semi double cradle
Telescopic fork
travel 9.5 in (241 mm)
stroke 10.8 in (275 mm)
Pro-link
travel 11.1 in (282 mm)
70/100 – 19 42M
CM
AC
DUNLOP K490
70/100 – 19 42M
BRIDGESTONE
M61
90/100 – 16 52M
CM
AC
DUNLOP K695
90/100 – 16 52M
BRIDGESTONE
M58
Rear tire
bias-ply, tube
15 psi (100 kPa, 1.0 kgf/cm
2
)
15 psi (100 kPa, 1.0 kgf/cm
2
)
Tire type
Tire pressure, front (cold)
Tire pressure, rear (cold)
F. brake, swept area
R. brake, swept area
Fuel capacity
Caster angle
Trail length
Fork oil capacity
Single disc brake
55.5 in
2
(358.1 cm
2
)
Single disc brake
46.6 in
2
(300.7 cm
2
)
Fuel recommendation
unleaded gasoline, pump
octane number of 91 or
higher
27°48’
1.14 US gal
3.8 in
11.57 US oz
4.3R
96 mm
342 cm
3
1,900 mm
770 mm
1,171 mm
1,285 mm
866 mm
413 mm
336 mm
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