Spec Sheet
The information below is specific to the Yamaha - FS1-MDX 77, 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.Bike Info
CC:
50
Service
Gearbox Oil grade:
SAE30 or 20W/50
Idle Speed (rpm):
1250-1350
Points Gap mm:
0.5 - 0.6 mm
Spark Plugs Gap (mm):
0.5 - 0.6
Two Stroke Oil:
20:1
Tyre Pressure Back Bar / psi:
28 psi
Tyre Pressure Front Bar / psi:
20 psi
Brakes
Front:
Disc
Rear:
Drum
Dimensions
Dry Weight:
70Kg
Fuel Capacity:
6.0 litres
Ground Clearance:
135mm
Height:
935mm
Length:
1755mm
Wheelbase:
1160mm
Width:
555mm
Electrics
Voltage:
6v
Battery:
6N4A-4D
Bulb-Headlight:
15/15
Charging System:
Magneto
Ignition:
Points
Spark Plugs:
NGK B7HS
Engine
Type:
Air Cooled 2 Stroke Single
Bore x Stroke:
40mm X 39.7mm
Carburation:
1 x Mikuni VM16SC
Carburation Main Jet:
150
Compression Ratio:
7:1
Displacement:
49cc
Lubrication System:
Autolube
Pilot Screw Setting:
1.75
Starting:
Kickstarter
Transmission
Chain Number of Links:
98
Chain type:
420
Clutch Type:
Wet Multiplate
Final Drive:
Chain 420 X 98
Gearchange Pattern:
N 1 2 3 4
Gear Ratio 1st:
3.077:1
Gear Ratio 2nd:
1.899:1
Gear Ratio 3rd:
1.304:1
Gear Ratio 4th:
1.038:1
Primary Drive:
Gear
Primary Drive Ratio:
3.895:1
Sprocket front:
14
Sprocket rear:
39
Transmission:
Four Speed
Misc.
Colour Options:
Baja Brown, Competition Yellow
Frame:
Pressed steel backbone type
Motorcycle Style:
ROADSTER
Number Produced:
200,000+
Place of Manufacture:
Japan
Power
Fuel Consumption:
95 mpg
Max Power Output:
4.8 BHP
Top Speed:
30 mph
Suspension
Front:
Conventional Oil Damped Telescopic
Rear:
Twin Enclosed Oil Damped Dual Sided Swingarm
Tyres
Front:
250-17 Tubed
Rear:
250-17 Tubed
Wheels
Front:
Spoked 17in
Rear:
Spoked 17in
Add information to the model
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.