Low Idle Fuel Delivery; Start Fuel Delivery; Ultra-Low Speed Delivery; Stop Fuel Delivery - Yanmar MP series Service Manual

ADJUSTMENT
5. Recheck the rated fuel delivery.
(3)
000 1324
1. Governor Rear 3. Governor Tension
Cover Lever
2. Reverse Angleich 4. Reverse Angleich
Spring Lever
Figure 6-9
Low Idle Fuel Delivery
1. Set the pump speed at the low idle pump speed
(see Calibration Data Sheet) with the control
lever (Figure 6-10, (1)) in the idle position.
2. Turn the low idle speed limit bolt
(Figure 6-10, (2) to achieve the correct idling
delivery amount. (See Calibration Data Sheet)
3. Tighten the lock nut.
0003465h
Figure 6-1
0
Start Fuel Delivery
1. Set the pump speed at the specified starting
injection RPM (see Calibration Data Sheet),
and set the control lever at the high idle
position.
2. Turn the starting fuel adjustment bolt
(Figure 6-1 1, (1)) to obtain the specified
injection amount. (See Calibration Data Sheet)
3. Tighten the locknut (Figure 6-1 1, (2)) and
install the hex cap.
Figure 6-1 1
Ultra-Low Speed Delivery
1. Set the pump speed at 50 RPM and check the
ultra-low speed setting injection volume
specification. (See Calibration Data Sheet)
Note: The Ultra Low Speed Test checks the
condition of the plunger and barrel.
Delivery below specifications indicates
excessive leakage.
Stop Fuel Delivery
Set the control lever at the high idle position.
1. Set the pump speed at 50 RPM higher than the
specified high idle speed (see Calibration Data
Sheet) and check that the (governor cut out)
injection amount reduces to zero. (See
Calibration Data Sheet)
2. Set the pump at the rated speed and turn off the
stop solenoid and check that the injection
amount reduces to zero.
MP Series Service Manual
YANMAR.