Table of Contents
Advertisement
Identity
Engine number
...
...
Frame number
Number of cylinders
Bore (nominal)
...
Stroke
...
...
...
Engine capacity
Capacities
Location
...
...
Engine
...
...
Gear box
Front fork (each side)
Rear leg (each leg)
Rear wheel fork hinge bearing
...
...
Fuel tank
...
...
Oil tank
Carburetter
Type
...
Monobloc
Main jet (no air filter)
Main jet (air filter fitted)
Pilot jet
...
...
Throttle valve
...
Needle position
...
Needle jet
...
...
Compression Ratios
W i t h standard pistons
Wit h high octane pistons
Connecting rod
Internal diameter
small end
+ ·0005 in. (H)
¾
– ·0000 in. (L)
Gudgeon Pin ¾ in. – ·0001 to – ·0003.
Crankshaft external diameters
Cylinders
Nominal
bore
66 mm.
2·598
Gear box ratios
First gear
2·65 to 1
Gear ratios
Engine sprocket
19
...
...
20
...
...
21
...
...
The standard size of engine sprocket is the 20 tooth
Shock absorber spring
Free length
...
...
DATA
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
Internal diameter
big end
(liner situ)
1·7715 in. (H)
1·7710 in. (L)
Crankpin
H—1·62525
L—1·62475
Actual
bore
+ ·0005 (H)
– ·0005 (L)
Second gear
1·70 to 1
First gear
14·55 to 1
...
...
...
...
...
...
13·91 to 1
13·25 to 1
...
...
...
1¾ in.± Q in.
...
...
...
...
...
On crankcase in front of left cylinder
...
On seat lug of main frame, right side (below saddle)
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
British
Metric
30·459 cub. in.
498
1 pint
568·2 c.c.
6½ fl. ozs.
184·6 c.c.
3 f l. ozs.
85
1½ fl. ozs.
42·6 c.c.
3¾ gallons
17·04 litres
4½ pints
2·557 litres
376/6
376/100
Size 240
376/100
Size 230
376/076
Size 30
376/060 Size 4
Centre notch
376/072
Size ·1065
7 to 1
7·7 to 1
Centre bearing
H—1·62625
L—1·62575
Part
number
011713
Third gear
1·308 to 1
Second gear
9·33 to 1
8·91 to 1
8·50 to 1
4
...
...
...
66 mm. (2·6 ins.)
...
...
72·8 mm. (2·868 ins.)
...
...
498 c .
c
.
3 (
0
4 ·
5
9
c.c.
c.c.
Centres
5·75 in.
Fourth gear (top)
1 to 1
Third gear
Fourth gear (top)
7·18 to 1
5·49 to 1
6·86 to 1
5·25 to 1
6·54 to 1
5·0 to 1
...
Two
u c
i .
s n
) .
Part
number
014221
Advertisement
Table of Contents
