Submitted by Peter Scales 
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Points 1 to 7 apply to the singles, 3-1, 5-1 (6-1), 8 to 15 to all models.

1. Remove Crankcase Door and pour in Lubricating oil of the correct quality till it overflows into the sump.
2. Using engine oil in oil can, well oil connecting rod big end through the holes provided.
3. Open oil Filler Cover.
4. Fill sump with oil to within one inch of the top.
5. Work pump hand lever up and down and see that oil is delivered through the oil pipes inside the crankcase on to the main bearings.
6. Replace crankcase door.
7. Close oil Filler cover and screw wing nut tight.  (Note - do not open while engine is running as oil will be forced out.)
8. Fill recess in cylinder head round the valves with lubricating oil.
9. Fill tops of push-rods and tops of Tappets. [with oil]
10. Fill small greaser on valve rocker shaft and screw down a turn.
11. Place oil in small cup labelled "oil", near valve tappets.
12. Fill water cooling system with water, avoiding "hard" water wherever possible.  In case of tank cooling, open 3-way tap in bottom water tank connection so that the water can flow freely from tank into cylinder jacket. (Keep water above top connection in tank.)
13. Fill fuel tank using fine gauze strainer.
14. Turn on fuel tap on fuel tank.
15. Prime fuel system.
    
    "To Start Engine"  (all models)
    1. See that the valve lifter stud is underneath the exhaust valve tappet.
    2. Turn Governor Lever Handle downwards.
    3. Lift Overload Pawl to allow governor lever to move to maximum position.  This Pawl will return to Normal as soon as engine starts.
    4. Screw the compression ratio changeover Valve(s) inwards tight on to seat.
    5. Place the starting handle on the engine crankshaft, and turn smartly. When a good speed has been obtained on the flywheel, pull valve lifter stud from under exhaust valve tappet when the engine should immediately fire. On multi-cylinder engines the other stud should be pulled out immediately after.
    6. As son as the engine has attained its normal speed, open the compression ratio changeover valve by screwing the hand wheel(s) outwards until it (they) come(s) to a stop.
    7. NOTE.  When Changeover Valve is screwed in [it beds] against seating at A Fig. 3; when screwed out, against seating at B.  These seatings should be kept free from carbon.  This can be done by turning valve hand wheel backwards and forwards once or twice before leaving in final position, tight up.

    
    [For lightly loaded engines (1/3 load or less) it may be advantageous to run on low compression for reasons of less smoke.]
    
    "To Stop" (all models)
    Push up Governor-Control Lever.
    
    If frost is probable, drain cylinder jacket, also water circulating pump 
    if fitted.