| Frame numbering |
1961. DL20S-xxx. 1962.
EL20S-xxx etc. |
| |
|
| Engine |
AMC 20TS. 199cc. 59mm x 73mm.
Selective assembly and "gas-flowed". |
| Gears |
Four speed |
| Frame |
Single downtube with swinging-arm rear. |
| Forks |
Telescopic. Oil damped. There
was a Mk1 and a Mk2 fork (1964 on). |
| Tyres |
1961 - 63: Front 18" x 3.00".
Rear: 18" x 3.25"
1964 on: Front 19" x 2.75". Rear 18" x 3.25" |
| Wheel rims |
Dunlop WM1 36 hole |
| Ignition timing |
|
| Points gap |
|
| Plug gap |
|
| Plug type |
|
| Carburettor |
AMAL Type 376 / 231. |
| Jet size |
Jet block - 15/16" bore. |
| Needle |
|
| Needle setting |
|
| Tank capacity |
2¾ gallons approximately. Use of
unleaded fuel will cause no problems.
In 1963 a "jelly-mould" tank was fitted. |
| Petroil mixture |
20:1 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. |
| Chaincase capacity |
Fill to level plug. |
| Chains |
Primary chain: 58 pitches. ⅜" x ¼"
x 0.225" Renold 110038
Final drive chain: 123 pitches. ½" x 0.335" x 0.305". Renold
110046 |
| Sprockets |
Engine: (crankshaft)
Gearbox (final drive)
Rear wheel sprocket: 50 teeth. |
| Brakes |
6" front & 5" rear |
| Bulbs |
Main bulb: 6v - 30 / 24w.
pre-focus.
Tail lamp: 6v - 3w.
Stop lamp: 6v - 18w.
Parking lamp: 6v - 3w.
Speedo: 6v - 5.3amp |
