Makita PM7651H Technical Information page 28

[4] Before mounting the inner parts of Pump body assembly in place, make sure that the tip of Inlet needle is neither worn nor
deformed. (Fig. 6-11-2-2)
Note: The inner parts are not available individually. If you need some of the inner parts, order Pump body assembly.
[5] When mounting Control lever, make sure that the upper end of Spring is firmly held in place under the projection of Control
lever. (Fig. 6-11-2-3)
[6) Fully loosen the idle adjusting screw, then remove two M3x10 Pan head screws. (Fig. 6-11-2-1)
[7] Make sure that Inlet screen is not clogged, then set it back in place.
[8] Spray carburetor cleaner in all the fuel lines of Carburetor, then after several minutes, wash out dirt and debris with clean
gasoline.
Metering diaphragm
Control lever
Spring
Inlet needle
Fig. 6-11-2-2
with good tip with worn tip
An Inlet needle with worn tip can
cause a pressure leak.
Fig. 6-11-2-3
Debris in valve seat can
cause a pressure leak.
28 / 41
Wrong examples
Control lever is not parallel to Pump
body assembly.
The upper end of Spring is
out of place.