Yanmar 1GM - Service Manual - Chapter 1-6
Engine Cross-Section - Profile

1. Cylinder Head	14. Camshaft gear	26. Lubricating oil inlet pipe	36. Input shaft
3. Main bearing housing	19. Crankshaft	28. Fuel injection pump cam	37. Output shaft
4. Exhaust valve	20. Crankshaft gear	29. Fuel injection pump	38. Forward large gear
5. Intake valve	21. Flywheel	32. Cooling water pump	39. Reverse large gear
6. Valve spring	22. Crankshaft V-pulley	33. Thermostat	40. Output shaft coupling
11. Intake silencer	25. Lubricating oil pump	35. Damper Disc