| Model: | Petrol - 4-Stroke - Air Cooled - Type 2A |
| Dimensions: | Bore: 51.3mm - Stroke: 47.6mm - Cubic Capacity: 98cc - Single Cylinder |
| B.H.P: | 1.3 at 3,000rpm |
| Valves: | Type: Mushroom - Side Valve |
| Valve Clearances: | Exhaust: 0.008" - Inlet: 0.008" - Inlet Valve Opens 8 Deg before Top Dead Centre with 0.008" valve clearance - the correct opening and closiong of the valves will follow. |
| Camshaft: | Type: One Piece spur, gear driven |
| Piston: | Material, low expansion allow - Two compression rings and 1 scraper ring. Gudgeon pin fixing by 2 circlips. |
| Connecting Rod: | Material, Aluminium Alloy - Type of Big End bearing: plain - Shell |
| Carburettor: | Make: Zenith, Model 13T |
| Ignition: | Magneto: Wico Fluywheel - Toiming: 30 Deg before Top Dead Centre - Drive: Main Shaft |
| Spark Plug: | Size: 14mm |
| Lubrication System: | J.A.P. patent design dipper, trough system - Sump Capacity: Half a Pint |
| Fuel Tank Capacity: | Half a Gallon |
| Fuel Consumption: | 0.8 pints per B.H.P. hour |
| Engine Weight: | 36lbs |
| Rotation: | Looking at take-off shaft - anti-clockwise |
Note: All these measurements and volumes are in the original British units - which are different to the American versions!!
1 Pint = 568.26 mls
1 Gallon = 4.546 litres
DO NOT CONFUSE THESE with the American pints - if you use "Half an (American) Pint" of oil in the sump you will have underfilled it by about 20%!!