Yamaha - FS1-E 72

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Bike Info

CC:
50
Bike Description:
The iconic Sixteener Special of the 1970s ----------- Neil had one
Chassis info:
2RU- 008421
FS1-E Parts and accessories

Service

2 Stroke Tank - Litres:
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Chain Freeplay mm:
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Coolant:
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Cooling System (litres):
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Engine Oil Classification API:
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Engine Oil Grade SAE:
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Engine Oil quantity (litres):
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Engine Oil quantity with filter (litres):
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Final Drive grade:
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Final Drive quantity:
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Float Height:
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Fork oil grade:
10W-30
Front fork air gap (left leg):
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Front fork air gap (right leg):
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Front Fork Oil cc (left leg):
130cc
Front Fork Oil cc (right leg):
130cc
Gearbox Oil grade:
SAE30 or 20W/50
Gearbox Oil Litres:
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Idle Speed (rpm):
1250-1350
Points Gap mm:
-100
Spark Plugs Gap (mm):
0.5 - 0.6
Sprocket carrier bearing:
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Transmission oil:
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Transmission oil quantity:
600-650ml
Two Stroke Oil:
20:1
Tyre Pressure Back Bar / psi:
28 psi
Tyre Pressure Back - Pillion Bar / psi:
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Tyre Pressure Front Bar / psi:
20 psi
Tyre Pressure Front - Pillion Bar / psi:
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Valve Adjustment Interval:
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Valve Clearance Cold - Exhaust:
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Valve Clearance Cold - Inlet:
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Brakes

Front:
Twin Disc
Rear:
Drum
Brake fluid:
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Front Disc Size:
110mm single leading shoe
Front Drum Size:
110mm single leading shoe
Front-Pistons-per-caliper:
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Rear Disc Size:
110mm single leading shoe
Rear Drum Size:
110mm single leading shoe
Rear-Pistons-per-caliper:
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Dimensions

Dry Weight:
70Kg
Fuel Capacity:
6.5 litres
Ground Clearance:
135mm
Height:
935mm
Length:
1755mm
Rake:
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Reserve Fuel Capacity:
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Seat Height:
740mm
Trail:
75mm
Wet Weight:
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Wheelbase:
1160mm
Width:
555mm

Electrics

Voltage:
6v
Battery:
6N4A-4D
Bulb-Headlight:
15/15
Charging System:
Magneto
Headlight Fuse:
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Ignition:
Points
Ignition Timing:
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Main Fuse:
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Spark Plugs:
NGK B6HS
Spark Plugs (Iridium):
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Tail Light Fuse:
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Engine

Type:
Air Cooled 2 Stroke Reed Valve V Six
Air Filtration:
paper element
Bore x Stroke:
40mm X 39.7mm
Carburation:
1 x Mikuni VM16SC
Carburation Idle Jet:
25
Carburation Main Jet:
150
Compression Ratio:
7:1
Displacement:
49cc
Firing Order:
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Fuel Minimum Octane Rating:
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Lubrication System:
20: 1 Premix
No. of Valves:
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Pilot Screw Setting:
1.75
Red line RPM:
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Starting:
Kickstarter
Valve Train:
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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
Gear Ratio 5th:
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Gear Ratio 6th:
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Primary Drive:
Gear
Primary Drive Ratio:
3.895:1
Sprocket front:
14
Sprocket rear:
39
Transmission:
Four Speed

Misc.

Colour Options:
Candy Gold, Popsicle Purple baja brown competition yellow
Exhaust:
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Frame:
Pressed steel backbone type
Fuel Control:
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Insurance Group:
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Motorcycle Style:
ROADSTER
Number Produced:
200,000+
Place of Manufacture:
Japan
Swing Arm:
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Power

Fuel Consumption:
95 mpg
Max Power Output:
4.8 BHP
Max Torque:
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Power/Weight Ratio:
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Standing 1000m:
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Standing 1/4 mile:
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Top Speed:
45 mph

Suspension

Front:
Conventional Oil Damped Telescopic
Front Travel:
75mm
Rear:
Twin Enclosed Oil Damped Dual Sided Swingarm
Rear Travel:
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Tyres

Front:
225-17 Tubed
Rear:
250-17 Tubed

Wheels

Bearing Front Left:
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Bearing Front Right:
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Front:
Spoked 17in
Rear:
Spoked 17in