E

EMU01204¯

TROUBLESHOOTING

A problem in the fuel, compression, or ignition systems can cause poor starting, loss of power, or other problems. The troubleshooting chart describes basic checks and possible remedies. (This chart covers all Yamaha outboard motors. Therefore, some items may not apply to your model.)

If your outboard motor requires repair, bring it to a Yamaha dealer.

Trouble

 

Possible Cause

 

Remedy

 

 

 

 

 

 

1.

Battery capacity weak or low.

1.

Check battery condition. Use

 

 

 

 

battery of recommended capacity.

 

2.

Battery connections loose or

2.

Tighten battery cables and clean

 

 

corroded.

 

battery terminals.

A. Starter will not

3.

Fuse for electric start circuit blown.

3.

Check for cause of electric

operate.

 

 

 

overload and repair. Replace fuse

 

 

 

 

with one of correct amperage.

 

4.

Starter components faulty.

4.

Have serviced by a Yamaha

 

 

 

 

dealer.

 

5.

Shift lever in gear.

5.

Shift to neutral.

 

 

 

 

 

 

1.

Fuel tank empty.

1.

Fill tank with clean, fresh fuel.

 

2.

Fuel contaminated or stale.

2.

Fill tank with clean, fresh fuel.

 

3.

Fuel filter clogged.

3.

Clean or replace filter.

 

4.

Starting procedure incorrect.

4.

Read "STARTING ENGINE"

 

 

 

 

section.

 

5.

Fuel pump malfunctions.

5.

Have serviced by a Yamaha

 

 

 

 

dealer.

 

6.

Spark plug(s) fouled or incorrect

6.

Inspect spark plug(s). Clean or

B. Engine will not

 

type.

 

replace with recommended type.

start (Starter

7.

Spark plug cap(s) fitted incorrectly.

7.

Check and re-fit cap(s).

operates).

8.

Poor connections or damaged

8.

Check wires for wear or breaks.

 

 

ignition wiring.

 

Tighten all loose connections.

 

 

 

 

Replace worn or broken wires.

 

9.

Ignition parts faulty.

9.

Have serviced by a Yamaha

 

 

 

 

dealer.

 

10.

Engine stop switch lanyard not

10.

Attach lanyard.

 

 

attached.

 

 

 

11.

Engine inner parts damaged.

11.

Have serviced by a Yamaha

 

 

 

 

dealer.

 

 

 

 

 

5-1