The three ports and the piston valve

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Other lessons in this sub-strand

1. A push every turn
2. No valves, only ports
3. The three ports and the piston valve
4. Up: squeeze above, draw below
5. Down: fire, then scavenge
6. 360 degrees, one push
7. Oil in the petrol
8. How the mixture gets in
9. Tools and the strip order
10. Read it before you measure
11. Bore, ovality and piston clearance
12. Ring gaps and the locating peg
13. Big-end, side play and the crank seals
14. Seal it, gap it, torque it
15. Smoke, shake, knock and no start