ENGINE
6LPA Service Manual
5-93
Injection Timing Inspection and Adjustment
12/05
© 2007 Yanmar Marine International
INJECTION TIMING INSPECTION
AND ADJUSTMENT
Inspection of Injection Timing
1. Set the No. 1 or No. 6 cylinder at the top dead
center (TDC) compression stroke.
2. Turn the crankshaft pulley clockwise to align its
groove to that of the timing gear cover
(Figure 5-226).
Figure 5-226
Figure 5-226
3. Loosen the two union nuts securing the fuel
injection pump to No. 1 and No. 5 fuel injection
pipes and position them out of the way
(Figure 5-227).
Figure 5-227
Figure 5-227
4. Remove the plug bolt (Figure 5-228, (1)) and
gasket (Figure 5-228, (2)) from the distribution
head plug of the fuel injection pump.
5. Install the plunger stroke measuring tool
(Figure 5-228, (3)) and dial indicator
(Figure 5-228, (4)) into the plug bolt hole of the
distribution head plug.
Figure 5-228
Figure 5-228
6. Slowly turn the crankshaft pulley
counterclockwise and adjust the dial indicator to
0 mm (0 in.) when the dial indicator reading is at
the minimum.
0005227
000522
8
(2)
(4)
(
3
)
(1)
0005229
