Useful data
|
Useful data |
| Engine bore | 82 mm |
| Engine stroke M20 | 94 mm |
| Engine stroke M21 | 112 mm |
| Petrol tank capacity | 3 gallons |
| Oil tank capacity | 5 pints |
| Gearbox capacity | 1 pint |
| Inlet tappet clearance (cold) | 0,010 in |
| Exhaust tappet (cold) | 0,012 in |
| Compression M20 | 4,9:1 |
| Compression M21 | 5:1 |
| Tyres | 3,25/3,50-19 |
| Piston ring gap | 0,008-0,012 in |
| Piston clearance | 0,0035-0,0055 in |
| Ignition timing | 7/16 in BTDC |
| Magneto point gap | 0,012 in |
| Spark plug gap |
0,012-0,018 in |