| Frame numbering |
Frame numbers were prefixed (1953
/ 1954) J9/xxx. (1955) 55J9-xxx. |
| |
|
| Engine |
1953. Villiers Mk 6E Comp. 197cc.
59mm x 72mm.
1954 on. Villiers Mk 7E. 197cc. 59mm x 72mm. |
| Gears |
Three speed. For 1954 there were
wide ratios. A four speed box was optional. |
| Frame |
Single downtube with detachable rigid rear. |
| Forks |
Model 6 fork with oil-damped two-rate
springs |
| Fork oil capacity |
1953 - 54: ¼ pint per leg
1955: 165cc per leg. SAE 50 |
| Tyres |
Dunlop Trials Universal tyres. 21"
x 2.75" front. 19" x 4.00" rear. |
| Wheel rims |
Dunlop WMO 36 hole |
| Ignition timing |
5/32" before top dead centre. |
| Points gap |
0.015" |
| Plug gap |
0.018" - 0.025" |
| Plug type |
Original spec. Lodge CB 3 |
| Carburettor |
Villiers Type S.24 |
| Jet size |
Main jet 120cc |
| Needle |
No. 3½ |
| Needle setting |
1.9" out. |
| Tank capacity |
2¼ gallons approximately. Use of unleaded
fuel will cause no problems |
| Petroil mixture |
16:1 as originally specified. Can be
safely reduced to 24:1 with modern oils. |
| Gearbox capacity |
Remove oil level screw on side of engine
casing and oil filler screw on top of casing. Fill oil through the
filler opening until oil begins to run out through the level plug hole.
The correct level of oil is then assured. Check it regularly. Castrol
"D" SAE 140 |
| Chaincase capacity |
Not applicable as the primary chain runs
within the gearbox. |
| Chains |
Chains and sprockets varied according to
gearing and whether a 3 or 4 speed gearbox was fitted. |
| Sprockets |
|
| Brakes |
5" front & rear |
| Bulbs: Direct. |
Main bulb: 6v - 30 / 30w. S.B.C.
Tail lamp: 6v - 3w M.B.C.
Parking lamp bulb: 3.5v - 15 amp M.E.S.
Parking lamp battery Ever Ready No. 1289 |
