Yamaha F300 User manual

F300
LF300
F350
LF350
F350A1
FL350A1
OWNER’S MANUAL
6AW-28199-17
U.S.A.Edition
LIT-18626-08-89
qRead this manual carefully before operating this
outboard motor.
6AW-9-17Hyoshi09.12.813:34ページ1
©2019 Yamaha Motor Corporation, U.S.A.

EMU25062
ZMU01690
Read this manual carefully before operating this outboard motor. Keep this
manual onboard in a waterproof bag when boating. This manual should stay
with the outboard motor if it is sold.
6AW-9-17Hyoshi09.12.813:34ページ2
©2019 Yamaha Motor Corporation, U.S.A.

Important manual information
EMU31283
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 ob-
tain 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.
: This is the safety alert symbol. It is
used to alert you to potential personal injury
hazards. Obey all safety messages that fol-
low this symbol to avoid possible injury or
death.
WARNING
EWM00781
A WARNING indicates a hazardous situa-
tion which, if not avoided, could result in
death or serious injury.
NOTICE
ECM00701
A NOTICE indicates special precautions
that must be taken to avoid damage to the
outboard motor or other property.
T
IP:
A TIP provides key information to make pro-
cedures easier or clearer.
Yamaha continually seeks advancements in
product design and quality. Therefore, while
this manual contains the most current prod-
uct information available at the time of print-
ing, there may be minor discrepancies
between your machine and this manual. If
there is any question concerning this manu-
al, please consult your Yamaha dealer.
T
IP:
The F300TR, LF300TR, F350TR, LF350TR,
F350AET1, FL350AET1 and the standard
accessories are used as a base for the ex-
planations and illustrations in this manual.
Therefore some items may not apply to ev-
ery model.
EMU25111
F300, LF300, F350, LF350, F350A1, FL350A1
OWNER’S MANUAL
©2009 by Yamaha Motor Corporation, USA
1st edition, December 2009
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Corporation, USA
is expressly prohibited.
Printed in Japan
P/N LIT-18626-08-89
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©2019 Yamaha Motor Corporation, U.S.A.

Table of contents
Safety information............................. 1
Outboard motor safety .................... 1
Propeller............................................ 1
Rotating parts.................................... 1
Hot parts ........................................... 1
Electric shock.................................... 1
Power trim and tilt ............................. 1
Engine shut-off cord (lanyard)........... 1
Gasoline............................................ 1
Gasoline exposure and spills ............ 2
Carbon monoxide.............................. 2
Modifications ..................................... 2
Boating safety ................................. 2
Alcohol and drugs ............................. 2
Personal flotation devices ................. 2
People in the water ........................... 2
Passengers ....................................... 2
Overloading....................................... 2
Avoid collisions ................................. 3
Weather ............................................ 3
Accident reporting ............................. 3
Boat education and training .............. 3
Passenger training ............................ 4
Boating safety publications ............... 4
Laws and regulations ........................ 4
Boating organizations...................... 4
Basic boating rules
(Rules of the road) ........................ 4
Steering and sailing rules and
sound signals.................................. 5
Rules when encountering vessels .... 5
Other special situations..................... 6
General information .......................... 9
Identification numbers record.......... 9
Outboard motor serial number .......... 9
Digital electronic control serial
number............................................ 9
Key number..................................... 10
EC Declaration of Conformity
(DoC) ........................................... 10
CE Marking ................................... 10
Read manuals and labels.............. 12
Warning labels ................................ 12
Specifications and
requirements.................................... 15
Specifications................................ 15
Installation requirements............... 16
Boat horsepower rating ................... 16
Mounting motor ............................... 17
Digital electronic control
requirements ............................... 17
Battery requirements..................... 17
Specifications of Battery..................17
Mounting battery ............................. 17
Multiple batteries ............................. 18
Propeller selection ........................ 18
Counter rotation models.................. 18
Start-in-gear protection ................. 18
Engine oil requirements ................ 19
Fuel requirements......................... 19
Gasoline .......................................... 19
Ring Free Fuel Additive...................20
Anti-fouling paint ........................... 20
Motor disposal requirements......... 20
Emergency equipment.................. 20
Emission control information......... 21
North American models...................21
Star labels ....................................... 21
Components .................................... 24
Components diagram.................... 24
Digital electronic control .................. 28
Digital electronic control-active
indicator ........................................ 29
Digital electronic control-alert
indicator ........................................ 30
Control lever .................................... 30
Neutral interlock trigger ................... 31
Free throttle switch.......................... 31
Throttle friction adjuster...................33
Station selector switch ....................34
Engine selector switch ....................34
Engine shut-off cord (lanyard)
and clip.......................................... 34
Main switch ..................................... 36
Starter button .................................. 37
Engine stop button ..........................37
Power trim and tilt switch on
digital electronic control ................38
Power trim and tilt switch on
bottom engine cowling .................. 38
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©2019 Yamaha Motor Corporation, U.S.A.

Table of contents
Power trim and tilt switches............. 39
Tilt limiter......................................... 39
Tilt support lever for power trim
and tilt model ................................ 39
Cowling lock lever (turn type).......... 40
Flushing device ............................... 41
Fuel filter/Water separator............... 41
Instruments and indicators ............ 42
Command link multifunction
meters ......................................... 42
Command link multifunction
tachometers ................................ 42
Start-up checks ............................... 43
Adjusting trolling speed................... 43
Low oil pressure-alert...................... 44
Overheat alert ................................. 44
Water separator alert ...................... 45
Engine trouble alert......................... 45
Low battery voltage-alert................. 45
Command link multifunction
speed & fuel meters .................... 46
Command link multifunction
speedometers ............................. 47
Command link multifunction fuel
management meters ................... 48
Engine control system.................... 49
Alert system .................................. 49
Digital Electronic Control alert......... 49
Overheat alert ................................. 49
Low oil pressure alert...................... 51
Installation ....................................... 52
Installation ..................................... 52
Mounting the outboard motor.......... 52
Operation ......................................... 54
First-time operation ....................... 54
Fill engine oil ................................... 54
Breaking in engine .......................... 54
Getting to know your boat ............... 54
Checks before starting engine ...... 54
Fuel level......................................... 54
Remove cowling.............................. 55
Fuel system..................................... 55
Controls........................................... 55
Engine shut-off cord (lanyard)......... 56
Engine oil ........................................ 57
Engine ............................................. 57
Flushing device ............................... 57
Install cowling .................................. 58
Checking power trim and
tilt system ...................................... 58
Battery ............................................. 59
Filling fuel...................................... 60
Operating engine .......................... 60
Sending fuel .................................... 60
Change of station ............................ 60
Starting engine ................................ 61
Checks after starting engine ......... 65
Cooling water .................................. 65
Warming up engine....................... 66
Electric start models........................ 66
Checks after engine warm-up....... 66
Shifting ............................................ 66
Stop switches .................................. 66
Selecting outboard motor
(triple engine) .............................. 66
Shifting.......................................... 68
Stopping boat................................ 69
Operating the port / center /
starboard engine ......................... 69
Boat direction................................ 73
Stopping engine............................ 76
Procedure for single station
models .......................................... 76
Procedure for dual station models
(main station) ................................ 76
Procedure for dual station models
(sub station) .................................. 76
Trimming outboard motor.............. 77
Adjusting trim angle
(Power trim and tilt)....................... 77
Adjusting boat trim ..........................78
Tilting up and down....................... 79
Procedure for tilting up
(power trim and tilt models)...........80
Procedure for tilting down
(power trim and tilt models)...........81
Shallow water................................ 82
Power trim and tilt models............... 82
Cruising in other conditions........... 84
Maintenance .................................... 85
✩✮✾✬✤✪ ✥  
©2019 Yamaha Motor Corporation, U.S.A.