| Frame numbering |
1959. BL25S-xxx. 1960.
CL25S-xxx. etc. |
| |
|
| Engine |
AMC 25S |
| Gears |
Four speed. |
| Frame |
Single downtube with swinging-arm rear. |
| Forks |
Telescopic. AMC Teledraulic |
| Tyres |
Front: 21" x 2.75". Rear: 19"
x 3.50" |
| Tyre pressures |
Front 8 lbs.psi. Rear 9 - 10lbs. psi. |
| Wheel rims |
Front: Dunlop WM1 36 hole.
Rear: Dunlop WM3 36 hole. |
| Ignition timing |
¼" before top dead centre. |
| Points gap |
0.018" |
| Plug gap |
0.018" - 0.020" |
| Plug type |
Original spec. Lodge RL49 |
| Carburettor |
AMAL 389 / 28. 1⅛" bore |
| Slide |
389 / 4 |
| Jet size |
300 |
| Needle jet |
0.105" |
| Pilot jet |
30 |
| Needle setting |
2nd groove from top. |
| Tank capacity |
2¼ gallons approximately. Use of unleaded
fuel will cause no problems |
| 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. Castrol
"D" SAE 140 |
| Chaincase capacity |
Fill to level plug. |
| Chains |
Primary chain: 60 pitches
Final drive chain: 134 pitches ½" x 0.335" x 0.305" wide |
| Sprockets |
Engine: (crankshaft) 20 teeth
Gearbox (final drive) 15 teeth
Rear wheel sprocket: 60 teeth |
| Brakes |
6" front & rear |
