Engine body 19. Fit the relay box. 4. 20. MD2O10, MD2020: Fit the alternator and clamp. Fit the drive belt. I Note: I t should be possible to press in the belt ap- prox. 10 mm (.40 in) between the pulleys. MD2020. MD2030. MD2040: Check and adjust if necessary the valve clearance for cylinder No. 1, and the clearance for the outlet valve on cylinder No. 2. Pull round the crankshaft 240° (2/3 turn) anti-clock- wise (seen from front) and adjust the clearance for cylinder No. 3 and the clearance for the inlet valve on cylinder No. 2. 21. Connect the hose to the sea water pump and tigh- ten'the clip. Connect the exhaust pipe. 22. Fill with refrigerant.
See "Replenishment of refrige- ra t on page 64. 23. Connect the battery cables. Open the fuel cocks and bottom valve. Start the engine and check that 5. Clean the valve cover and fit it. Replace the seal if damaged. Test run the engine and check that no no leakage occurs. l eakage occurs. Adjusting the valves Note! The clearance must never be checked when the engine is running. Valve clearance (cold engine): Dismantling of piston, piston rings and connecting rod I nlet and outlet for all engines: 0.20 mm (.0078 in). 1. Dismantle the valve cover. 2. Turn the engine in its normal direction of rotation until both valves for cylinder No. 1 are closed (com- pression position).
Continue turning the engine round until the marking of flywheel shows 0 0 . 1. Empty the cooling system and drain or syphon out the engine oil. 2. Dismantle the cylinder head. See "Dismantling of cylinder head" on page 25 and 26. Fig. 38. Dismantling of oil strainer with induction manifold Fig. 37. Adjusting the valves 3. MD2O10: Check and adjust if necessary the valve clearance for cylinder No. 1. 3. Remove the sump and plate` over the sump. Remove the oil pump's induction manifold. Pull round the crankshaft 180° (1/2 turn) clockwise (see from front) and adjust the clearance for cylin- der No. 2. There is no plate on the MD2O10-40C. 34