Spec Sheet
The information below is specific to the Yamaha - 650 XJ 650 4K0, showing anything for service information to the amount of fork oil or even the tyre pressures. If you would like to contribute any missing information, please use the edit link below.
Back.Yamaha - XJ 650 4K0 80
Bike Info
CC:
650
Bike Description:
XJ650 (4K0): 4K0 - 000101 on, 1980 to 1982XJ650 (11N): 4K0 - 055101 on, 1982 to 1984, YICS
Chassis info:
4KO
Service
Engine Oil Classification API:
SE or higher
Engine Oil Grade SAE:
Below 15°: 10W-30; Above 5°: 20W-40
Engine Oil quantity (litres):
Dry 2.95; at Change 2.65
Engine Oil quantity with filter (litres):
2.65 litres
Final Drive grade:
SAE 80 API GL-4 or SAE 80/90 Hypoid gear oil
Final Drive quantity:
0.2 litres
Float Height:
17.5mm ± 0.5mm
Fork oil grade:
SAE 10W
Front Fork Oil cc (left leg):
236cc
Front Fork Oil cc (right leg):
236cc
Idle Speed (rpm):
1050 ± 50 rpm
Spark Plugs Gap (mm):
0.7-0.8 mm
Tyre Pressure Back Bar / psi:
2.0 bar
Tyre Pressure Back - Pillion Bar / psi:
2.8 bar
Tyre Pressure Front Bar / psi:
1.8 bar
Tyre Pressure Front - Pillion Bar / psi:
2.3 bar
Valve Adjustment Interval:
10000 km
Valve Clearance Cold - Exhaust:
0.16-0.20
Valve Clearance Cold - Inlet:
0.16-0.20
Brakes
Front:
Twin Disc
Rear:
Drum
Brake fluid:
DOT 3
Front Disc Size:
266 mm
Front-Pistons-per-caliper:
1
Rear Drum Size:
200 mm
Dimensions
Dry Weight:
238 kg
Fuel Capacity:
19.5 litres
Ground Clearance:
145 mm
Height:
1130 mm
Length:
2170 mm
Reserve Fuel Capacity:
3.8 litres
Seat Height:
780 mm
Wheelbase:
1445 mm
Width:
860 mm
Electrics
Voltage:
12v
Battery:
Yuasa YB14L-A2
Bulb-Headlight:
60/55W
Charging System:
Alternator w. regulator
Ignition:
TCI, Fully Electronic
Ignition Timing:
7° @ 1050rpm
Main Fuse:
20A
Spark Plugs:
NGK BP7ES
Spark Plugs (Iridium):
NGK PFR7W-T
Engine
Type:
Air Cooled 4 Stroke DOHC Inline Four
Bore x Stroke:
63 x 52.4 mm
Carburation:
4x 32mm Hitachi carbs
Carburation Idle Jet:
43
Carburation Main Jet:
112
Compression Ratio:
9.2:1
Displacement:
653 cc
Firing Order:
1-2-4-3
Lubrication System:
Wet Sump
No. of Valves:
8
Pilot Screw Setting:
2 1/2
Red line RPM:
9500 rpm
Starting:
Electric Starter
Valve Train:
DOHC, Driven by Chain
Transmission
Clutch Type:
Wet Multiplate; 7 Steel 8 Friction
Final Drive:
Shaft and Bevel; 2.909 (32/11)
Gearchange Pattern:
1-N-2-3-4-5
Gear Ratio 1st:
2.187 (35/16)
Gear Ratio 2nd:
1.500 (30/20)
Gear Ratio 3rd:
1.153 (30/26)
Gear Ratio 4th:
0.933 (28/30)
Gear Ratio 5th:
0.812 (26/32)
Primary Drive:
Gear
Primary Drive Ratio:
1.672 (97/58)
Transmission:
5-speed
Misc.
Colour Options:
Black, Blue, Red, Silver
Exhaust:
4 in 2
Frame:
Tubular steel dual cradle frame
Motorcycle Style:
Naked Street, Cafe Racer
Power
Max Power Output:
52kW (71HP) @ 9400rpm
Max Torque:
55Nm @ 7500rpm
Top Speed:
196 km/h
Suspension
Front:
Oil Damped Telescopic Coil Spring Fork
Front Travel:
150 mm
Rear:
Twin Shock, Swinging Arm
Rear Travel:
80 mm
Tyres
Front:
3.25H19-4PR or 100/90-H19 Tubeless
Rear:
120/90-V18 Tubeless
Wheels
Front:
Cast Alloy - Italic
Rear:
Cast Alloy - Italic
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All information presented on the website is given to the best of our knowledge at the given time. All information is intended to only as a guide. A major Japanese manufacturer's quote:
We reserve the right to vary our specification with or without notice, and as such time and in such manner as we think fit.