Hi Mark B
Firing: 1,3,4,2; Solex choke 30-23, main 115, compensating 210, pilot 60. Valves (set with 6thou clearances) Inlet open 10 BTDC, Close 50 ABDC, Exhaust open 50 BBDC, Close 10 ATDC. Ignition timing: contact points begin to open at TDC (shown for cylinders 1 or 4 when line on flywheel opposite hole in case) . Tappets (cold) inlet .006 inch, exhaust .010 inch. Plug gap .022 - .025; distributor gap .012 - .015; front wheel toe in 1/8 inch max. Oil pressure 40 psi; oil grade 50 in summer and 40 in winter (UK temperatures I guess) Battery 57 ah.
Front tyres 5.00-16 18psi or 4.50-17 21psi.
Hope you ind useful.
