Yamaha 15F User manual

OWNER’S MANUAL
9.9F
15F
63V-28199-79-E0
U63V79E0.book Page 1 Friday, March 2, 2007 3:04 PM

Read this owner’s manual carefully before operating or working on your
outboard motor. Keep this manual onboard in a waterproof bag when boating.
This manual should stay with the outboard motor if it is sold.
U63V79E0.book Page 1 Friday, March 2, 2007 3:04 PM

Important manual information
EMU25103
To the owner
Thank you for choosing a Yamaha outboard
motor. This Owner’s Manual contains infor-
mation needed for proper operation, mainte-
nance and care. A thorough understanding of
these simple instructions will help you obtain
maximum enjoyment from your new Yamaha.
If you have any question about the operation
or maintenance of your outboard motor,
please consult a Yamaha dealer.
In this Owner’s Manual particularly important
information is distinguished in the following
ways.
The Safety Alert Symbol means AT-
TENTION! BECOME ALERT! YOUR SAFE-
TY IS INVOLVED!
WARNING
EWM00780
Failure to follow WARNING instructions
could result in severe injury or death to the
machine operator, a bystander, or a per-
son inspecting or repairing the outboard
motor.
CAUTION:
ECM00700
A CAUTION indicates special precautions
that must be taken to avoid damage to the
outboard motor.
NOTE:
A NOTE provides key information to make
procedures easier or clearer.
Yamaha continually seeks advancements in
product design and quality. Therefore, while
this manual contains the most current product
information available at the time of printing,
there may be minor discrepancies between
your machine and this manual. If there is any
question concerning this manual, please con-
sult your Yamaha dealer.
To ensure long product life, Yamaha recom-
mends that you use the product and perform
the specified periodic inspections and mainte-
nance by correctly following the instructions in
the owner’s manual. Any damage resulting
from neglect of these instructions is not cov-
ered by warranty.
Some countries have laws or regulations re-
stricting users from taking the product out of
the country where it was purchased, and it
may be impossible to register the product in
the destination country. Additionally, the war-
ranty may not apply in certain regions. When
planning to take the product to another coun-
try, consult the dealer where the product was
purchased for further information.
If the product was purchased used, please
consult your closest dealer for customer re-
registration, and to be eligible for the specified
services.
NOTE:
The 9.9FMH, 15FMH and the standard ac-
cessories are used as a base for the explana-
tions and illustrations in this manual.
Therefore some items may not apply to every
model.
EMU25121
9.9F, 15F
OWNER’S MANUAL
©2007 by Yamaha Motor Co., Ltd.
1st Edition, February 2007
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan
U63V79E0.book Page 1 Friday, March 2, 2007 3:04 PM

Table of contents
General information .......................... 1
Identification numbers record.......... 1
Outboard motor serial number ........... 1
EC label........................................... 1
Important labels............................... 1
Warning labels.................................... 1
Safety information............................. 3
Safety information ........................... 3
Rotating parts ..................................... 3
Hot parts............................................. 3
Electric shock ..................................... 3
Engine shut-off cord ........................... 3
Gasoline ............................................. 3
Gasoline exposure and spills ............. 3
Carbon monoxide ............................... 3
Modifications ...................................... 3
Boating safety ................................. 4
Alcohol and drugs............................... 4
Personal flotation devices .................. 4
People in the water............................. 4
Passengers ........................................ 4
Overloading ........................................ 4
Avoid collisions................................... 4
Weather.............................................. 5
Passenger training ............................. 5
Boating safety publications................. 5
Laws and regulations ......................... 5
Basic requirements ........................... 6
Fueling instructions ......................... 6
Gasoline ............................................. 6
Engine oil............................................ 6
Installation requirements ................. 6
Boat horsepower rating ...................... 6
Mounting motor .................................. 6
Propeller selection.............................. 7
Start-in-gear protection ................... 7
Basic components ............................8
Main components............................ 8
Fuel tank............................................. 8
Fuel joint............................................. 9
Fuel gauge ......................................... 9
Fuel tank cap...................................... 9
Air vent screw..................................... 9
Tiller handle ........................................ 9
Gear shift lever ................................... 9
Throttle grip ........................................ 9
Throttle indicator............................... 10
Throttle friction adjuster .................... 10
Engine shut-off switch ...................... 10
Engine stop button ........................... 11
Choke knob ...................................... 11
Manual starter handle....................... 11
Steering friction adjuster................... 12
Trim rod (tilt pin) ............................... 12
Tilt lock mechanism .......................... 12
Tilt support bar ................................. 12
Top cowling lock lever(s)
(turn type)...................................... 13
2-pin connector................................. 13
Operation ......................................... 14
Installation..................................... 14
Mounting the outboard motor ........... 14
Clamping the outboard motor........... 15
Breaking in engine ........................ 16
Gasoline and engine oil mixing
chart (50:1).................................... 16
Procedure for pre-mixed models ...... 16
Pre-operation checks .................... 17
Fuel .................................................. 17
Oil ..................................................... 17
Controls ............................................ 17
Engine .............................................. 17
Filling fuel and engine oil .............. 17
Filling fuel for portable tank .............. 17
Gasoline and oil mixing (100:1)........ 17
Operating engine .......................... 18
Feeding fuel (portable tank) ............. 18
Starting engine ................................. 19
Warming up engine....................... 21
Choke start models .......................... 21
U63V79E0.book Page 1 Friday, March 2, 2007 3:04 PM

Table of contents
Shifting .......................................... 22
Stopping boat ................................ 23
Stopping engine ............................ 23
Procedure......................................... 23
Trimming outboard motor.............. 23
Adjusting trim angle for manual tilt
models .......................................... 24
Adjusting boat trim............................ 24
Tilting up and down ....................... 25
Procedure for tilting up (manual tilt
models) ......................................... 26
Procedure for tilting down
(manual tilt models)....................... 26
Cruising in shallow water .............. 27
Cruising in shallow water
(manual tilt models)....................... 27
Cruising in other conditions........... 28
Maintenance..................................... 29
Specifications ................................ 29
Transporting and storing outboard
motor .......................................... 30
Clamp screw mounting models ........ 30
Storing outboard motor..................... 30
Procedure......................................... 31
Lubrication........................................ 32
Cleaning the outboard motor............ 32
Checking painted surface of motor... 32
Periodic maintenance.................... 32
Replacement parts ........................... 32
Maintenance chart............................ 33
Greasing........................................... 34
Cleaning and adjusting spark plug ... 35
Checking fuel system ....................... 35
Inspecting fuel filter .......................... 36
Cleaning fuel filter............................. 36
Inspecting idling speed..................... 37
Checking wiring and connectors ...... 37
Exhaust leakage............................... 37
Water leakage .................................. 38
Checking propeller ........................... 38
Removing propeller .......................... 38
Installing propeller ............................ 39
Changing gear oil ............................. 39
Cleaning fuel tank............................. 40
Inspecting and replacing anode(s) ... 41
Checking top cowling ....................... 41
Coating the boat bottom ................... 42
Trouble Recovery............................ 43
Troubleshooting ............................ 43
Temporary action in emergency ... 46
Impact damage................................. 46
Starter will not operate ..................... 46
Emergency starting engine............... 47
Treatment of submerged motor .... 48
Procedure......................................... 48
U63V79E0.book Page 2 Friday, March 2, 2007 3:04 PM