Yanmar 1GM User Manual page 151

FUEL INJECTI ON AND GOVERNOR SYSTEMS
145
.:IfiJi'r-
Spill
pipe
7
NOTE
Do not use the starter motor when rotating
the crankshaft.
NOTE
On 2GM, 2GM20, 3GM, 3GM30, 3HM and
3HM35 engines, the cylinder nearest thefly-
wheel is the number one cylinder.
5. Place the speed control lever at the mid -throttle pos i-
tion.
NOTE
Jfa spiff pipe is not available or cannot he
fabricated. observe fuet flow in the open
nipple.
38. On 20M, 2GM20, 3GM, 3GM30, 3HM and3HM35
models-Unscrew the fuel injection line retaining nut
(Figu re 17) for the number one cylinder fuel injection
line, then disconnect the fuel line from the pump.
4. Install a spill pipe on the pump in place of the
high-pressure fuel line (F igure 18).
3A. On IGM and IGMIO models-Unscrew the fuel in- . - - - - "
jcction line retaining nut (F igu re 16) and disconnect the
fuel line from the pump.
Adjust Fucl lnjcction Timing
NOTE
Always rotate the crankshaft in the normal
running direction (clockwise at the crank-
shaft pulley); otherwise the water pump im -
peller may be damaged.
1.
Make sure there is no air in the fuel system.
If
neces-
sary, bleed the fuel system as descr ibed in the previous
section.
6. Rotate the crankshaft with the crankshaft pulley retain-
ing nut until the IT mark on the flywheel appears.
2. If there is no flywheel observation hole in the clutch
cover (Figure 14), remove the starter motor so the timing
marks on the flywheel (F igure 15) are visible.
NOTE
The piston must be
011
its compression
stroke.
If
fuel does not appear in the spill
pipe, the piston may 1I0the on the compres-