Injection Pump Repairs (5-21)
Section 5 - Fuel System - Group 05
B Series Shop Manual
Shutdown Solenoid Inspection, Bosch P7100
Engines using the Bosch P7100 fuel injection pump with
the RQVK governor are equipped with the synchro-start
fuel shut off solenoid to actuate the shut off lever. Both 12
volt and 24 volt external fuel shut off solenoids are
The synchro-start has a weatherpack connector with 3
wires in it.
Refer to the chart below to find the correct gauge size and
length of continuous wire for the white (pull-in) wire, which
connects to the solenoid wiring.
Length of Wire
NOTE: 14 gauge wire is required for the red (hold-in) wire,
which connects to the ``Run'' terminal on the ignition switch.
NOTE: The black (ground) wire must be the same size as the
white (pull-in) wire.