Norton - Mercury 650 68

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Bike Info

CC:
647
Mercury 650 Parts and accessories

Service

Tyre Pressure Back Bar / psi:
24 psi
Tyre Pressure Front Bar / psi:
24 psi
Valve Adjustment Interval:
5000 miles
Valve Clearance Cold - Exhaust:
.008"
Valve Clearance Cold - Inlet:
.006"

Brakes

Front:
Drum
Rear:
Drum

Dimensions

Dry Weight:
408 lbs
Fuel Capacity:
2.5 gallons UK

Electrics

Voltage:
12v
Charging System:
Alternator
Ignition:
coil
Ignition Timing:
32 deg at full advance
Spark Plugs:
Champion N5

Engine

Type:
Air Cooled 4 Stroke OHV Parallel Twin
Bore x Stroke:
68x89
Carburation:
30mm x 1
Carburation Idle Jet:
25
Carburation Main Jet:
280
Compression Ratio:
9:1
Displacement:
646 cc
No. of Valves:
2/cyl
Starting:
kick
Valve Train:
OHV

Transmission

Chain type:
5/8" x 1/4" x 97 rollers
Gearchange Pattern:
1 up 3 down
Gear Ratio 1st:
11.6
Gear Ratio 2nd:
7.57
Gear Ratio 3rd:
5.52
Gear Ratio 4th:
4.53
Primary Drive:
chain
Sprocket front:
21
Transmission:
4 speed

Misc.

Exhaust:
twin
Frame:
Norton Slimline Featherbed
Number Produced:
700
Place of Manufacture:
England

Power

Max Power Output:
49.9 hp
Top Speed:
115 mph