Petter A specifications
Fuel Tank Capacity:8
pints (4.55 Litres)
Bore Size: 85mm (3.346 ")
Stroke: 82.5mm (3.248
")
Carburettor: Zenith 24T-2
Fuel: Petrol (unleaded)
Magneto:
+ Standard Rotation: WICO Series A1056 BZ, Wipac
+ Reverse Rotation: WICO Series A1059 BZ, Wipac
Spark Plug: Lodge BL14, Champion 8
Oil Sump Capacity 6¾ Pints (3.8 Litres)
Horse Power:
1½bhp @ 750rpm, 2bhp @ 1000rpm, 3bhp @ 1500rpm
Compression Ratio: 5:1
Colour: Mid-Brunswick Green
Ignition Timings:
20° BEFORE Top Dead
Centre
Valve Tappet Clearance: (Cold): 0.010" (.25mm)
Crankshaft & Camshaft End Float: 0.006"/.016" (.15/.41mm)
Piston Ring Gap (When New): 0.007"/0.15" (.18/.38mm)
Piston Ring Gar (Maximum): 0.06" (1.5mm)
Inlet Valve Opens: 6° BEFORE Top Dead Centre
Inlet Valve Closes: 30° AFTER Bottom Dead Centre
Exhaust Valve Opens: 41° BEFORE Top Dead Centre