Technical Data for Yanmar 2GM20
    

YANMAR 2GM20

Model. 2GM20(F)(C)
Bore x Stroke. 75 X 72mm
Displacement. 0,636 cc.
Configuration. 2 Cylinder, vertical, 4cycle water-cooled diesel engine. Swirl pre-combustion chamber.
Sales date app.. 1984 - d.d
Dimensions LxWxH mm. 638 X 455 X 495mm (643 X 482 X 545mm)
Dry weight. 106Kg (114Kg)
Output: max. / continuous. 18Hp(13,4Kw)/3600Rpm / 16Hp(11,9Kw)/3400Rpm
Cooling System. Direct sea water cooling (Fresh water cooling)
Starting System. Starter: 12V - 1,0Kw Generator: 12V - 55A (LR155-20)
Lubrication system. Forced lubrication by trochoid pump
Mounting flange No. SAE 6
Clutch. Mechanical cone (KM2C) Clutch dog (SD20)
Rotation, crankshaft / propel. Counterclockwise / Clockwise viewed from stern
Fire Order. 1 - 2 - 1
Max. Torque. 3,75Kgm/2800Rpm
Fuel Consumption. Max. 215g/Hp-Hr
Notes: Model F= Fresk water cooling by heat exchanger.
Model C= Saildrive(SD20) Propel rotation: Counter clockwise.
Service Data:  
Engine oil. 2,0L CD - 15W/40
Gear oil. 0,25L CD - 15W/40 (KM2C) / 2,2L EP80/90 (SD20)
Valve clearance (Cold). Intake: 0,2mm Exhaust: 0,2mm
Fuel Injection Timing. 15 B.T.D.C.
Fuel Injection Pressure. 170+- 5Kg/cm2
Top Clearance / Compression. 0,68 - 0,88mm / 28 - 33Kg/Cm2
Tightning Torque:*  
Cylinder Head. 12,0Kgm
Bearing Con-Rod. 2,5Kgm
Bearing Main. 3,5Kgm
Bearing Main, set bolt. 5,0Kgm
Flywheel Bolt. 7,0Kgm