Adjustment; Component Identification; High Idle Fuel Delivery; Rated Fuel Delivery - Yanmar MP series Service Manual

ADJUSTMENT
ADJUSTMENT
The adjustment of fuel delivery requires correct
specifications. Before performing any of the
adjustments in this section, obtain the correct
calibration data sheet for the fuel injection pump
being tested. Contact your Yanmar Fuel Injection
Equipment Central Distributor to obtain the data
sheet.
Adjustments must be performed in the following
order when adjusting the governor:
1. High ldle Fuel Delivery
2. Rated Fuel Delivery
3. Torque Fuel Delivery
4. Reverse Angleich Spring Adjustment
5. Low ldle Fuel Delivery
6. Starting Fuel Delivery
7. Stop Fuel Delivery
8. Re-check Rated Fuel Delivery
9. Tamper-Proof Cap Installation
Component Identification
1. Rated Fuel Limiter Adjustment Assembly
2. Starting Fuel Adjustment Assembly
3. High ldle Speed Limit Bolt
4. Reverse Angleich Adjustment Assembly
5. Low ldle Speed Limit Bolt
6. Control Lever
Figure 6-5
High ldle Fuel Delivery
1. Set the fuel pump speed at the high idle speed
specified. (See Calibration Data Sheet).
2. Set the control lever (Figure 6-5, (6) to the high
idle position while turning the high idle speed
limit bolt (Figure 6-5, (3)) to obtain the specified
injection amount. (See Calibration Data Sheet).
3. Tighten the lock nut after completing the
adjustment to lock the high idle speed limit bolt
from turning.
Rated Fuel Delivery
The MP2 pump has a rated fuel limiter adjustment
assembly Figure 6-6 as standard equipment.
1. Remove the tamper-proof cap and screw in the
fuel limiter assembly (Figure 6-6, (1)) until it
contacts the governor tension lever and then
back off one-quarter (114) turn.
0003465m
Figure 6-6
2. Set the pump speed at the rated speed (see
Calibration Data Sheet) and move the control
lever until it contacts the high idle speed limit
bolt (Figure 6-5, (3)).
3. Adjust the rated injection amount by turning the
fuel limiter assembly (Figure 6-6, (1)) in or out
to obtain the correct specification, (See
Calibration Data Sheet).
MP Series Service Manual