E

 

 

 

 

 

 

 

Trouble

 

Possible Cause

 

Remedy

 

 

 

 

 

 

 

 

 

 

1.

Propeller damaged.

1.

Have propeller repaired or replaced.

 

 

 

2.

Propeller pitch or diameter incorrect.

2.

Install correct propeller to operate out-

 

 

 

 

 

 

board at its recommended speed

 

 

 

 

 

 

(r/min) range.

 

 

 

3.

Trim angle incorrect.

3.

Adjust trim angle to achieve most effi-

 

 

 

 

 

 

cient operation.

 

 

 

4.

Motor mounted at incorrect height on

4.

Have motor adjusted to proper transom

 

 

 

 

transom.

 

height.

 

 

 

5.

Warning system activated.

5.

Find and correct cause of warning.

 

 

 

6.

Boat bottom fouled with marine growth.

6.

Clean boat bottom.

 

 

 

7.

Spark plug(s) fouled or incorrect type.

7.

Inspect spark plug(s). Clean or replace

 

 

 

 

 

 

with recommended type.

 

 

 

8.

Weeds or other foreign matter tangled

8.

Remove foreign matter and clean lower

 

 

 

 

on gear housing.

 

unit.

 

 

 

9.

Fuel system obstructed.

9.

Check for pinched or kinked fuel line or

 

 

 

 

 

 

other obstructions in fuel system.

E. Engine power loss.

10.

Fuel filter clogged.

10.

Clean or replace filter.

 

 

 

 

 

 

 

11.

Fuel contaminated or stale.

11.

Fill tank with clean, fresh fuel.

 

 

 

12.

Spark plug gap incorrect.

12.

Inspect and adjust as specified.

 

 

 

13.

Poor connections or damaged ignition

13.

Check wires for wear or breaks.

 

 

 

 

wiring.

 

Tighten all loose connections.

 

 

 

 

 

 

Replace worn or broken wires.

 

 

 

14.

Failed ignition parts.

14.

Have serviced by a Yamaha dealer.

 

 

 

15.

Specified engine oil not used.

15.

Check and replace oil with specified

 

 

 

 

 

 

type.

 

 

 

16.

Thermostat faulty or clogged.

16.

Have serviced by a Yamaha dealer.

 

 

 

17.

Air vent screw closed.

17.

Open the air vent screw.

 

 

 

18.

Fuel pump damaged.

18.

Have serviced by a Yamaha dealer.

 

 

 

19.

Fuel joint connection incorrect.

19.

Connect correctly.

 

 

 

20.

Heat range of spark plug incorrect.

20.

Inspect spark plug and replace it with

 

 

 

 

 

 

recommended type.

 

 

 

21.

Engine not responding properly to shift

21.

Have serviced by a Yamaha dealer.

 

 

 

 

lever position.

 

 

 

 

 

 

 

 

 

 

 

 

1.

Propeller damaged.

1.

Have propeller repaired or replaced.

 

 

 

2.

Propeller shaft damaged.

2.

Have serviced by a Yamaha dealer.

F. Engine vibrates

3.

Weeds or other foreign matter tangled

3.

Remove and clean propeller.

 

on propeller.

 

 

excessively.

 

 

 

 

 

 

 

 

 

 

4.

Motor mounting bolt loose.

4.

Tighten bolt.

 

 

 

5.

Steering pivot loose or damaged.

5.

Tighten or have serviced by a Yamaha

 

 

 

 

 

 

dealer.

 

 

 

 

 

 

 

5-3