Trouble Recovery; Troubleshooting - Yamaha F300A Owner's Manual

Trouble Recovery

EMU41860

Troubleshooting

This section describes the likely causes and
remedies for problems, such as those in the
fuel, compression, and ignition systems,
poor starting, and loss of power. Please note
that all of the items in this section may not
apply to your model.
If your outboard motor requires repair, bring
it to a Yamaha dealer.
If the engine trouble-alert indicator is blink-
ing, consult your Yamaha dealer.
Starter will not operate.
Q. Does the Digital electronic control-alert in-
dicator come on?
A. Have serviced by a Yamaha dealer.
Q. Is control lever in gear?
A. Shift to neutral.
Q. Is battery capacity low or weak?
A. Check battery condition. Use battery of
recommended capacity.
Q. Are battery connections corroded or
loose?
A. Tighten battery cables and clean battery
terminals.
Q. Is fuse for starter relay or electric circuit
blown?
A. Check for cause of electric overload and
repair. Replace fuse with one of correct am-
perage.
Q. Are starter components malfunctioning?
A. Have serviced by a Yamaha dealer.
Engine will not start (starter operates).
Q. Is clip on engine shut-off cord (lanyard) in-
102
stalled?
A. Install clip to engine shut-off switch.
Q. Is fuel tank empty?
A. Fill tank with clean, fresh fuel.
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
Q. Is fuel filter clogged?
A. Clean or replace fuel filter.
Q. Is fuel pump malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Are spark plugs fouled or of incorrect
type?
A. Inspect spark plugs. Clean or replace with
recommended type.
Q. Are ignition parts malfunctioning?
A. Have serviced by a Yamaha dealer.
Q. Is ignition wiring damaged or poorly con-
nected?
A. Inspect wires for breaks and wear. Have
connections tightened and broken or worn
wires replaced by a Yamaha dealer.
Q. Are engine inner parts damaged?
A. Have serviced by a Yamaha dealer.
Engine idles irregularly or stalls.
Q. Are spark plugs fouled or of incorrect
type?
A. Inspect spark plugs. Clean or replace with
recommended type.
Q. Is fuel system clogged?
A. Inspect for pinched or kinked fuel line or
other obstructions in fuel system.