Yamaha F2 5 Service Manual

F2.5A
SERVICE MANUAL
69M-28197-3E-11290470 

NOTICE
This manual has been prepared by Yamaha primarily for use by Yamaha dealers and their trained
mechanics when performing maintenance procedures and repairs to Yamaha equipment. It has
been written to suit the needs of persons who have a basic understanding of the mechanical and
electrical concepts and procedures inherent in the work, for without such knowledge attempted
repairs or service to the equipment could render it unsafe or unfit for use.
Because Yamaha has a policy of continuously improving...

Contents
General information
1GEN 
INFO
Specifications
2SPEC
Periodic checks and adjustments
3CHK 
ADJ
Fuel system
4FUEL
Power unit
5POWR
Lower unit
6LOWR
Bracket unit
7BRKT
Electrical systems
8ELEC
Troubleshooting
9TRBL 
SHTG
Index
–+ 

69M3E11
GEN 
INFO
1
2
3
4
5
6
7
8
9
General information
How to use this manual ................................................................................. 1-1
Manual format............................................................................................ 1-1
Symbols ..................................................................................................... 1-2
Safety while working...................................................................................... 1-3
Fire...

GEN 
INFO
General information
1-169M3E11
How to use this manual1
Manual format
The format of this manual has been designed to make service procedures clear and easy to under-
stand. Use the information below as a guide for effective and quality service.
1
Parts are shown and detailed in an exploded diagram and are listed in the components list.
2
Tightening torque specifications are provided in the exploded diagrams and after a numbered
step with tightening instructions.
3
Symbols are used to indicate...

69M3E111-2
1
2
3
4
5
6
7
8
9
Symbols
The symbols below are designed to indicate the content of a chapter.
General information
Specifications
Periodic checks and adjustmentsFuel system
Power unit
Lower unitBracket unit
Electrical systems
Troubleshooting
GEN
INFO
SPEC
CHK
ADJ
FUEL
POWR
LOWRBRKT
ELEC
TRBL
SHTG
–+
Symbols 1
 to 6
 indicate specific data.
1Special tool
2Specified oil or fluid
3Specified engine speed
4Specified tightening torque5Specified measurement
6Specified electrical value 
(resistance,...

GEN 
INFO
General information
1-369M3E11
Safety while working1
To prevent an accident or injury and to
ensure quality service, follow the safety pro-
cedures provided below.
Fire prevention
Gasoline is highly flammable.
Keep gasoline and all flammable products
away from heat, sparks, and open flames.
Ventilation
Gasoline vapor and exhaust gas are heavier
than air and extremely poisonous. If inhaled
in large quantities they may cause loss of
consciousness and death within a short time.
When test running...

69M3E111-4
1
2
3
4
5
6
7
8
9
6. Keep a supply of clean, lint-free cloths for
wiping up spills, etc.
Good working practices
Special service tools
Use the recommended special service tools
to protect parts from damage. Use the right
tool in the right manner—do not improvise.
Tightening torques
Follow the tightening torque specifications
provided throughout the manual. When tight-
ening nuts, bolts, and screws, tighten the
large sizes first, and tighten fasteners starting
in the center and moving outward....

GEN 
INFO
General information
1-569M3E11
Identification1
Applicable model
This manual covers the following model.
Serial number
The outboard motor serial number is
stamped on a label attached to the port
clamp bracket.
1Model name
2Approved model code
3Transom height
4Serial number
Applicable model
F2.5AMH
Model nameApproved 
model codeStarting 
serial No.
F2.5AMH 69MS: 1000101–
L: 1000101–