Yanmar BY Series Service Manual page 151

FUEL SYSTEM
Figure 6-26
CAUTION
DO NOT remove special tools until
high-pressure pump is installed. If the
special tools are removed, the drive
sprocket will no longer be held in the
correct position for reassembly.
15. Tighten jack screw (Figure 6-26, (1)) until
high-pressure pump is released from sprocket.
Remove high-pressure pump from engine.
Installation
1
Figure 6-27
1. Remove jack screw (Figure 6-27, (1)) but leave
sleeve (Figure 6-27, (2)) (special tool OEM No.
13 5 192) installed.
6-22
2. Ensure gasket surfaces of the engine block and
high-pressure pump are clean. Install new
gasket (Figure 6-28, (1)).
0000200en
2
Note: The pump shaft may have a keyway cut
into it but no key is used in this
application.
3. Install high-pressure fuel pump and install three
nuts (Figure 6-29, (1)).
R13 0675A
Figure 6-28
Figure 6-29
BY Service Manual
Repair