Volvo Penta TAMD74P - Engine Will Not Stop Troubleshooting

101
6. Engine will not stop
CAUSE
● TAMD71B: Fuel shut-off valve fuse defective (see
page 72 for changing fuse)
● One of the semi-automatic fuses in the terminal
box has tripped (see page 71 for instructions on
resetting fuses)
● Poor contact/open-circuit in wiring (loose connec-
tions, oxidation)
● Key switch malfunction
● Faulty stop relay*
● Faulty solenoid valve (fuel shut-off valve)**
* TAMD63 and TAMD73WJ have no stop relay.
** TAMD73P and TAMD74 have no fuel shut-off valve.
REMEDY
Replace fuse (8A)
Reset the fuse by pressing in the button
Rectify any open-circuits/loose connections. Check
for oxidation on the contacts. If required, clean and
spray connection with damp-inhibitor spray. See the
wiring diagrams on pages 74–89.
Replace key switch
Replace stop relay (or swap temporarily with start
relay)
Contact an authorized Volvo Penta service mechanic
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