Yanmar 1GM User Manual page 68

62
Model
2GM20F
3GM30F
3HM35F
Table 4 FRESHWATER (CLOSED) COOLING SYSTEM CAPACITY
Capacity
2.9 L (0.77 gal.)
3.4 L (0.9 gal.)
4.9 L (1.3 gal.)
CHAPTER THREE
Table 5 TUNE-UP SPECIFICATIONS
Idle rpm Full throttle rpm Fuel injection Valve clearance
Model (no-load) (no-load) timing
1GM 850 3750 25° BTDC
0.2 m (0.008 in.)
1GM10 850 3825 15° BTDC 0.2 m (0.008 in.)
2GM 850 3750 25° BTDC 0.2 m (0.008 in.)
2GMF 850 3750 25° BTDC 0.2 m (0.008 in.)
2GM20 850 3825 15° BTDC
0.2 m (0.008 ln.)
2GM20F 850 3825 15° BTDC
0.2 m (0.008 ln.)
3GM
850
3750
28° BTDC 0.2 m (0.008 in.)
3GMF 850 3750 28° BTDC 0.2 m (0.008 in.)
3GMD 850 3750 28° BTDC 0.2 m (0.008 in.)
3GM30 850 3825 18° BTDC 0.2 m (0.008 in.)
3GM30F 850 3825 18° BTDC 0.2 m (0.008 in.)
3HM 850 3600 28° BTDC 0.2 m (0.008 ln.)
3HMF
850 3600 28° BTDC 0.2 m (0.008 in.)
3HM35 850 3625 21° BTDC 0.2 m (0.008 in.)
3HM3SF 850 3625 21° BTDC 0.2 m (0.008 in.)
Table 6 Compression Specifications
Pressure
(all models)
390-470 psi
(2700-3800 kPa)
Maximum difference
between cylinders
43 psi
(300 kPa)