ENGINE
SM-E4B SERIES, WSM
1-S35
(4) Gear Case and Timing Gears
Injection Pump, Fuel Feed Pump and Speed Control Plate
(for Energize to Stop Type Engine Stop Solenoid)
1. Remove the socket head screws and nuts, and remove the
injection pump (1).
2. Remove the screws and separate the speed control plate (2),
taking care not to damage the governor spring (4).
3. Disconnect the governor spring (4) and remove the speed
control plate (2).
4. Remove the fuel feed pump (3).
(When reassembling)
• Hook the governor spring (4) to the governor lever (5) first and
install the speed control plate (2).
• Be sure to place the copper washers underneath two screws
(8). (Two screws (8) in the upper of the speed control plate (2).)
• Position the slot (7) on the fork lever just under the slot (6) on
the crankcase.
• Insert the injection pump (1) so that the control rod (10) should
be pushed by the idling adjusting spring (9) at its end and the
pin (11) on the rod engages with the slot (7) on the fork lever (as
shown in the photo).
• The sealant is applied to both sides of the soft metal gasket
shim. The liquid gasket is not required for assembling.
• Addition or reduction of shim (0.05 mm, 0.002 in.) delays or
advances the injection timing by approx. 0.009 rad (0.5 °).
• In disassembling and replacing, be sure to use the same
number of new gasket shims with the same thickness.
(To be continued)
(1) Injection Pump
(2) Speed Control Plate
(3) Fuel Feed Pump
(4) Governor Spring
(5) Governor Lever
(6) Slot (Crankcase Side)
(7) Slot (Fork Lever Side)
(8) Screw and Copper Washer
(9) Idling Adjusting Spring
(10) Control Rod
(11) Pin
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