Fuse Replacement; Timing Belt Inspection - Mercury 40 FourStroke Maintenance And Installation Manual

Fuse Replacement

IMPORTANT: Always carry spare fuses.
The electrical wiring circuits on the outboard are protected from overload by
fuses in the wiring. If a fuse is blown, try to locate and correct the cause of the
overload. If the cause is not found, the fuse may blow again.
Open the fuse holder and look at the silver colored band inside the fuse. If the
band is broken, replace the fuse. Replace the fuse with a new fuse of the same
rating.
a
d
e
a - Ignition coil circuit—20 amp
b - Fuel pump/idle air control/fuel injector circuits—20 amp
c - Voltage regulator—25 amp
d - Main power relay/accessories/remote control—15 amp
e - Spare—20 amp
f - Good fuse
g - Blown fuse

Timing Belt Inspection

Inspect the timing belt and have it replaced by an authorized dealer if any of the
following conditions are found.
• Cracks in the back of the belt or in the base of the belt teeth.
eng
MAINTENANCE
b
c
63
f
g
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