Yamaha F 25 Manual

Trouble Recovery
46
A. Check for pinched or kinked fuel line or oth-
er obstructions in fuel system.
Q. Is fuel contaminated or stale?
A. Fill tank with clean, fresh fuel.
Q. Is fuel filter clogged?
A. Clean or replace filter.
Q. Have ignition parts failed?
A. Have serviced by a Yamaha dealer.
Q. Has warning system activated?
A. Find and correct cause of warning.
Q. Is spark plug gap incorrect?
A. Inspect and adjust as specified.
Q. Is ignition wiring damaged or poorly con-
nected?
A. Check wires for...

Trouble Recovery
47
Q. Is load on boat improperly distributed?
A. Distribute load to place boat on an even
plane.
Q. Is water pump or thermostat faulty?
A. Have serviced by a Yamaha dealer.
Q. Is there excess water in fuel filter cup?
A. Drain filter cup.
Engine power loss.
Q. Is propeller damaged?
A. Have propeller repaired or replaced.
Q. Is propeller pitch or diameter incorrect?
A. Install correct propeller to operate outboard
at its recommended speed (r/min) range.
Q. Is trim angle incorrect?
A....

Trouble Recovery
48
A. Connect correctly.
Q. Is heat range of spark plug incorrect?
A. Inspect spark plug and replace it with rec-
ommended type.
Q. Is high pressure fuel pump drive belt bro-
ken?
A. Have serviced by a Yamaha dealer.
Q. Is engine not responding properly to shift
lever position?
A. Have serviced by a Yamaha dealer.
Engine vibrates excessively.
Q. Is propeller damaged?
A. Have propeller repaired or replaced.
Q. Is propeller shaft damaged?
A. Have serviced by a Yamaha dealer.
Q. Are weeds...

Trouble Recovery
49

Do not attach the lanyard to clothing
that could tear loose. Do not route the
cord where it could become entangled,
preventing it from functioning.

Avoid accidentally pulling the lanyard
during normal operation. Loss of engine
power means the loss of most steering
control. Also, without engine power, the
boat could slow rapidly. This could
cause people and objects in the boat to
be thrown forward.

Make sure no one is standing behind
you when pulling the starter rope. It
could whip...

Trouble Recovery
50
7. Remove the starter case by pulling it to-
wards you.
8. Install the fuel tank bracket by installing
the bolts.
9. Install 2 bolts into the rear section of the
fuel tank.10. Prepare the engine for starting; see page
21. Be sure the engine is in neutral and
that the engine stop switch lanyard lock
plate is attached to the engine stop
switch.
11. Turn the lever on the carburetor to oper-
ate the choke system when the engine is
cold. After the engine starts, return the le-
ver to the...

Trouble Recovery
51
EMU29760
Treatment of submerged motor
If the outboard motor is submerged, immedi-
ately take it to a Yamaha dealer. Otherwise
some corrosion may begin almost immediate-
ly.
If you cannot immediately take the outboard
motor to a Yamaha dealer, follow the proce-
dure below in order to minimize engine dam-
age.
EMU29783Procedure
1. Thoroughly wash away mud, salt, sea-
weed, and so on, with fresh water.
2. Remove the spark plug(s), then face the
spark plug holes downward to allow any...

Consumer information
52
EMU29811
Important warranty information for U.S.A. and Canada
U69M15E0.book  Page 52  Wednesday, April 5, 2006  4:48 PM 

Consumer information
53
U69M15E0.book  Page 53  Wednesday, April 5, 2006  4:48 PM 

Consumer information
54
EMU29830
YAMAHA MOTOR CORPORATION, U.S.A.
 FOUR-STROKE OUTBOARD MOTOR
 THREE-YEAR LIMITED WARRANTY
U69M15E0.book  Page 54  Wednesday, April 5, 2006  4:48 PM 

Consumer information
55
U69M15E0.book  Page 55  Wednesday, April 5, 2006  4:48 PM