| Frame numbering |
1954 - 55. Prefix J11- |
| |
|
| Engine |
Villiers Mk 4F. Capacity 98cc.
47mm x 57mm |
| Gears |
Two speed with clutch. Handlebar lever
has "trigger". |
| Frame |
Single downtube with plunger rear. |
| Forks |
Light weight telescopic fork. Plastic
gaiters |
| Tyres |
2.25" x 19" |
| Tyre pressures |
Front 19 lbs.psi. Rear 29lb. psi. |
| Wheel rims |
Dunlop WMO 36 hole. Silver painted
(Argenized) |
| Ignition timing |
⅛" before top dead centre. |
| Points gap |
0.015" |
| Plug gap |
0.018" - 0.025" |
| Plug type |
Original spec. Lodge H14 |
| Carburettor |
Villiers Type 6/0 |
| Jet size |
J120 |
| Needle |
No. 2½ type 6/0 |
| Needle setting |
29 / 32" from tip of needle
to bottom of slide |
| Tank capacity |
2 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 |
Primary chain: 56 pitches. ⅜ x ¼ x
0.225"
Final drive chain: 118 pitches. ½" x 0.305" x 0.192" wide (Coventry 112045).
Tension movement max. ⅜" vertical |
| Sprockets |
Engine: (crankshaft) 17 teeth ⅜" pitch.
Gearbox (final drive) 14 teeth ½" pitch |
| Brakes |
4" front. 5" rear. |
| Bulbs: Direct |
Main bulb: 6v - 24 / 24w S.B.C.
Tail lamp: 6v - 3w (1954 S.C.) (1955 M.B.C.)
Parking lamp bulb: 3.5v - 0.15amp M.B.C.
Parking lamp battery Ever Ready No. 1289. |
| Bulbs: Rectified |
Main bulb: 6v - 24 / 30w.
Tail lamp: 6v - 3w M.B.C.
Tail / Stop-light (if fitted): 6v - 18 / 3w B.C.
Parking lamp bulb: 6v - 3w M.B.C.
Parking lamp battery Ever Ready No. 1289.
Speedo bulb: 6v - 0.17amp M.B.C. |
| Battery |
Lucas type - PUZ7E-9. 6 volt.
12 amp-hours. |
