Fuel Injection Pump Removal - Yanmar 6LPA-STP2 Service Manual

Fuel Injection Pump
12/05

Fuel Injection Pump Removal

1. Drain the cooling water from the engine and
disconnect the cooling pipe.
2. Remove the timing belt and No. 2 camshaft
timing pulley. See Timing Belt Removal on
page 5-69.
3. Remove the fuel injection pipe. See Fuel
Injection Nozzle Removal on page 6-14.
4. Disconnect the boost compensator hose.
5. Remove the fuel injection pump drive gear set
nut while securing the crankshaft pulley
(Figure 6-50, (1)). NOTICE: NEVER turn the
crankshaft pulley. The valve heads and piston
tops may be damaged by interference with each
other.
Figure 6-50
Figure 6-50
6. Remove the O-ring from the fuel injection pump
drive gear.
7. Remove two fuel injection pump stay set bolts
(Figure 6-51, (1)).
Figure 6-51
Figure 6-51
6LPA Service Manual
(1)
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(1)
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© 2007 Yanmar Marine International
8. Check that match marks (Figure 6-52, (1))
align before removing the fuel injection pump; if
they do not have match marks, draw new match
marks for reassembly.
9. Remove the two nuts securing the fuel injection
pump to the timing gear case.
Figure 6-52
(1)
Figure 6-52
10. Remove the fuel injection pump using the
special tool (Figure 6-53). Tighten the two 8
mm puller bolts evenly. NOTICE: NEVER grasp
the adjustment lever for moving the fuel
injection pump as the adjustment lever may be
damaged. Never place the fuel injection pump
at more than 45° from level.
Figure 6-53
Figure 6-53
11. Remove the O-ring from the fuel injection
pump.
FUEL SYSTEM
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