Valve lifter arm, Norton OHV + early SV

Norton OHV valve lifter / decompressor arm.  Norton sv singles 1937 to c 1948; OHV singles 1939 to 1963. Spindle bore: 1/2 inch (12.6mm); Offset: 1-1/8 inch  (29mm) - measured from centre of bolt hole to centre of cable hole; Length: 1-3/8 inch (35mm) - measured from centre of shaft hole to centre of cable hole. Very similar to A2/377 clutch operating arm but less offset and the cable slot for this arm is in line with the centre of the arm while A2/377 has the cable slot at 90 degrees to the spindle bore.
Original part number
8869; A2/67; 18175; - exhaust lifter arm