Trouble Recovery; Troubleshooting - Yamaha Motor VF150 Serie Manuel De L'utilisateur

Trouble Recovery

EMU40973

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 blinking,
consult your Yamaha dealer.
Starter will not operate.
Q. Is remote 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-
stalled?
A. Install clip to engine shut-off switch.
Q. Is fuel tank empty?
94
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 ty-
pe?
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 ty-
pe?
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.
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.