33 Data

Model year / description
Item
to July 1971 July 71 to Sept 1972 Sept 1972 on
Engine code
B74 B74 B74
Engine type
2 cyl boxer 2 cyl boxer 2 cyl boxer
Capacity
746cc 746cc 746cc
Cooling
Aircooled Aircooled Aircooled
Electrical system
6v -ve earth 6v -ve earth 12v -ve earth
Oil change / service interval
3100mi (5000Km) 3100mi (5000Km) 3100mi (5000Km)
Oil type
10W30 10W30 / 20W40 10W30 / 20W40
Oil capacity
2 litres 2 litres 2 litres
Plugs gap
0.8mm / 0,032" 0.8mm / 0.032" 0.8mm / 0.032"
Points gap
0.4-0.5mm / .016-.020" 0.4-0.5mm / .016-.020" 0.4-0.5mm / .016-.020"
Timing
6 deg BTDC 5deg ATDC 5deg ATDC
Inlet valve clearance (cold)
0.1mm / .004" 0.1mm / .004" 0.1mm / .004"
Exhaust valve clearance (cold)
0.15mm / 0.006" 0.15mm / 0.006" 0.15mm / 0.006"
Idle Speed
725rpm +- 25 900rpm 900rpm

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