Instruction manual

DATA
Make
A.J.S.
Models 350 c.c. 51/16M
51/16MS
51/16MC
51/16MCS
500 c.c. 51/18
51/18S
51/18C
51/18CS
Identity
Engine Number Scamped on left hand side of crankcase
Frame Number Stamped on seat lug of main frame, on right hand side (below the saddle)
Bore 350 c.c. Models—69 mm. (approx.) (2 F
in.)
500 c.c. Models—82·5 mm. (approx.) (34 in.)
Number of Cylinders (all models) One
Stroke All Models—93 mm. (approx.) (3·65625 in.)
E
ngine capacity, in cubic centimetres 350 Models—51/16M, 51/16MS, 51/16MC and 51/16MCS—347
500 Models—51/18, 51/18S, 51/18C and 51/18CS—498
Brake Liners
Length
6 s in.
Width
d
in.
Thickness
x
in.
Radius
in.
Quantity off
4 (2 per brake)
Part
number
010440 (3836-2)
Brake liner rivets
Diameter
8
in.
Length
a
in.
Material
Copper
Type
Tubular
Head
Tinmans No. 11
Quantity
per liner
6
Part
number
000113 (STD-113)
Capacities
Location
Engine 350 c.c.
Engine 500 c.c.
G
ear box
Front fork (each side)
Rear leg (each leg)*
Rear wheel fork hinge bearing*
Fuel tank (Rigid and Spring frame)
Fuel tank (Competition)
Oil tank
*On Spring Frame Models only.
B
ritish
21·170 cub. in.
30·380 cub. in.
1 pint
fl.
ozs.
3 fl. ozs.
fl.
ozs.
3 gallons
gallons
4 pints
Metric
347 c.c.
498 c.c.
568·2 c.c.
186 c.c.
85 c.c.
42·6 c.c.
13·638 litres
10·2285 litres
275 litres
Carburetter
Type
Main jet size (no air filter fitted)
Main jet size (air filter fitted)
Throttle valve size
Jet taper needle position
350
76AE/IAK
150
130
6/4
3rd notch
from top
500
89B/IAK
180
160
29/4
2nd notch
from top
Chain whip (all models)
Front chain Rear chain Dynamo chain
a in. a *.ni ½ ot .ni ¼
*When no load on the saddle the rear chain whip on Spring Frame Models is 18 in.
Magneto chain
¼
in.
4
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