E

 

 

 

 

 

 

 

Trouble

 

Possible Cause

 

Remedy

 

 

 

 

 

 

 

 

 

 

1.

Cooling system clogged.

1.

Check water intake for restriction.

 

 

 

2.

Engine oil level low.

2.

Fill oil tank with specified engine

 

 

 

 

 

 

oil.

 

 

 

3.

Heat range of spark plug incorrect.

3.

Inspect spark plug and replace it

 

 

 

 

 

 

with recommended type.

 

 

 

4.

Specified engine oil not used.

4.

Check and replace oil with

 

 

 

 

 

 

specified type.

D. Warning buzzer

5.

Engine oil contaminated or

5.

Replace oil with fresh, specified

sounds or

 

deteriorated.

 

type.

indicator lamp

6.

Oil filter clogged.

6.

Have serviced by a Yamaha

lights.

 

 

 

dealer.

 

 

 

7.

Oil feed/injection pump

7.

Have serviced by a Yamaha

 

 

 

 

malfunctions.

 

dealer.

 

 

 

8.

Load on boat improperly distributed.

8.

Distribute load to place boat on an

 

 

 

 

 

 

even plane.

 

 

 

9.

Water pump/thermostat faulty.

9.

Have serviced by a Yamaha

 

 

 

 

 

 

dealer.

 

 

 

10.

Excess water in fuel filter cup.

10.

Drain filter cup.

 

 

 

 

 

 

 

 

 

 

1.

Propeller damaged.

1.

Have propeller repaired or

 

 

 

 

 

 

replaced.

 

 

 

2.

Propeller pitch or diameter incorrect.

2.

Install correct propeller to operate

 

 

 

 

 

 

outboard at its recommended

 

 

 

 

 

 

speed (r/min) range.

 

 

 

3.

Trim angle incorrect.

3.

Adjust trim angle to achieve most

 

 

 

 

 

 

efficient operation.

 

 

 

4.

Motor mounted at incorrect height

4.

Have motor adjusted to proper

 

 

 

 

on transom.

 

transom height.

 

 

 

5.

Warning system activated.

5.

Find and correct cause of warning.

E. Engine power loss.

6.

Boat bottom fouled with marine

6.

Clean boat bottom.

 

growth.

 

 

 

 

 

 

 

 

 

 

 

7.

Spark plug(s) fouled or incorrect

7.

Inspect spark plug(s). Clean or

 

 

 

 

type.

 

replace with recommended type.

 

 

 

8.

Weeds or other foreign matter

8.

Remove foreign matter and clean

 

 

 

 

tangled on gear housing.

 

lower unit.

 

 

 

9.

Fuel system obstructed.

9.

Check for pinched or kinked fuel

 

 

 

 

 

 

line or other obstructions in fuel

 

 

 

 

 

 

system.

 

 

 

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.

 

 

 

 

 

 

 

5-3