Yanmar 6LY3 series Service Manual page 157

Fuel Injection Pump / Governor / Timer
12/05
5. Remove the timer cover (Figure 6-10, (1)) from
the drive shaft housing cover (Figure 6-10, (2)).
NOTICE: If the fuel injection pump gear
(Figure 6-11, (1)) is to be removed without
setting the crankshaft to 29° BTDC No. 6, paint
index marks on the idler gear (Figure 6-11, (2))
and the fuel injection pump gear. Secure the gear
train and do not remove the idler gear. Align the
index marks when installing the pump gear.
Figure 6-11
(1)
(4)
Figure 6-11
1 – Fuel Injection Pump Gear
2 – Idler Gear
3 – Adjusting Mark "B"
4 – Two Index Marks
6LY3 Service Manual
(2)
(3)
0005674
© 2007 Yanmar Marine International
6. Before removing the fuel injection pump gear
fasten an FIC (Fuel Injection Control) lock bolt
and a collar through the FIC lock hole
(Figure 6-12, (1)) of the fuel injection pump
gear to lock the camshaft of the fuel injection
pump, before removing the fuel injection pump
gear. (The camshaft angle of this pump is in the
same as factory default.) NOTICE: If the fuel
injection pump is removed without fastening an
FIC lock bolt, the pump camshaft angle may
change and the adjustment of the fuel injection
timing will become difficult. In that case make
sure to ask the authorized FIE service shop to
adjust the FIC lock.
Part Name
FIC Lock Bolt
FIC Lock Bolt Collar
NOTICE: If the idler gear is to be removed,
ensure the index marks (Figure 6-11, (4)) on the
fuel injection pump gear align with the index mark
"B" (Figure 6-11, (3)) on the idler gear. If they
don't, rotate the crankshaft 360° until they do.
Figure 6-12
(1)
Figure 6-12
1 – FIC Lock Hole
FUEL SYSTEM
Part No.
158908-51490
158908-51480
0005675
6-15