Yanmar 1GM, Руководство по эксплуатации

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2-b) Crank the engine and set the No. 1 (flywheel side) piston to top dead center (TDC) on
the compression stroke.
Note
Set the position at which the valve rocker arm shaft
does not move even when the crankshaft is turned to
the left and right, centered around the T mark. C.
Maintenance standard (for all models)
Intake/exhaust valves 0.20mm
1. Valve clearance adjusting screw
2. Thickness gauge
2-c)
Check and adjust the intake and exhaust valve head clearances of the No. 1 cylinder.
Loosen the valve clearance adjusting screw lock nut, adjust the clearance to the maintenance
standard with a thickness gauge, and retighten the lock nut. In the case of 2 cylinder model,
adjust the valve head clearance of the No. 2 cylinder in the same manner after turning the
crankshaft 180°.
Note
If you adust the valve head clearance of the No. 2 cylinder first, turn the crankshaft 540°.
Adjust the clearance of the No. 1 cylinder in the same manner.
In the case of 3 cylinder model, adjust the valve head clearance of the No. 3 cylinder in the same
manner after turn the crankshaft 240° and then adjust it of the No. 2 cylinder after turn the
crankshaft 240° more.
[9-5.] Washing the air intake silencer element
Wash the element inside the air intake silencer with a
neutral detergent every 250 hours of operation.