Yamaha 2C Owner's Manual
OWNER’S MANUAL
Read this manual carefully before operating this
outboard motor.
2C
6A1-28199-2R-E0
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.
Important manual information
T
T
EMU25105
To the owner
Thank you for choosing a Yamaha outboard
motor. This Owner’s Manual contains information needed for proper operation, maintenance 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.
: This is the safety alert symbol. It is used
to alert you to potential personal injury hazards. Obey all safety messages that follow
this symbol to avoid possible injury or death.
EWM00781
WARNING
A WARNING indicates a hazardous situation which, if not avoided, could result in
death or serious injury.
ECM00701
NOTICE
A NOTICE indicates special precautions
that must be taken to avoid damage to the
outboard motor or other property.
your machine and this manual. If there is any
question concerning this manual, please consult your Yamaha dealer.
To ensure long product life, Yamaha recommends that you use the product and perform
the specified periodic inspections and maintenance by correctly following the instructions in
the owner’s manual. Any damage resulting
from neglect of these instructions is not covered by warranty.
Some countries have laws or regulations restricting 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 warranty may not apply in certain regions. When
planning to take the product to another country, consult the dealer where the product was
purchased for further information.
If the product was purchased used, please
consult your closest dealer for customer reregistration, and to be eligible for the specified
services.
IP:
The 2CMH and the standard accessories are
used as a base for the explanations and illustrations in this manual. Therefore some items
may not apply to every model.
EMU25121
IP:
A TIP 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
OWNER’S MANUAL
2C
©2009 by Yamaha Motor Co., Ltd.
1st Edition, February 2009
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan
Table of contents
Safety information............................. 1
Outboard motor safety .................... 1
Propeller............................................. 1
Rotating parts..................................... 1
Hot parts............................................. 1
Electric shock ..................................... 1
Engine shut-off cord (lanyard)............ 1
Gasoline ............................................. 1
Gasoline exposure and spills ............. 1
Carbon monoxide............................... 1
Modifications ...................................... 2
Boating safety ................................. 2
Alcohol and drugs............................... 2
Personal flotation devices .................. 2
People in the water............................. 2
Passengers ........................................ 2
Overloading........................................ 2
Avoid collisions................................... 2
Weather.............................................. 3
Passenger training ............................. 3
Boating safety publications................. 3
Laws and regulations ......................... 3
General information ..........................4
Identification numbers record.......... 4
Outboard motor serial number ........... 4
C-Tick label ..................................... 4
Read manuals and labels................ 5
Warning labels.................................... 5
Specifications and requirements..... 8
Specifications .................................. 8
Installation requirements ................. 8
Boat horsepower rating ...................... 8
Mounting motor .................................. 9
Propeller selection........................... 9
Engine oil requirements .................. 9
Fuel requirements ........................... 9
Gasoline ............................................. 9
Muddy or acidic water ................... 10
Anti-fouling paint ........................... 10
Motor disposal requirements......... 10
Emergency equipment .................. 10
Components .................................... 11
Components diagram.................... 11
Fuel tank........................................... 11
Fuel tank cap.................................... 12
Air vent screw................................... 12
Fuel cock .......................................... 12
Tiller handle...................................... 12
Throttle lever .................................... 13
Throttle friction adjuster.................... 13
Engine shut-off cord (lanyard) and
clip................................................. 13
Engine stop button ........................... 13
Choke knob ...................................... 14
Manual starter handle....................... 14
Steering friction adjuster................... 14
Trim rod (tilt pin) ............................... 14
Tilt support knob............................... 15
Installation ....................................... 16
Installation..................................... 16
Mounting the outboard motor ........... 16
Clamping the outboard motor........... 17
Operation ......................................... 19
First-time operation ....................... 19
Breaking in engine............................ 19
Getting to know your boat ................ 19
Checks before starting engine ...... 19
Fuel level .......................................... 19
Fuel system ...................................... 20
Controls ............................................ 20
Engine shut-off cord (lanyard) .......... 20
Oil ..................................................... 20
Engine .............................................. 20
Filling fuel and engine oil .............. 20
Filling fuel for built-in tank................. 20
Gasoline and oil mixing (100:1)........ 21
Operating engine .......................... 22
Sending fuel ..................................... 22
Starting engine ................................. 23
Checks after starting engine ......... 24
Cooling water ................................... 24
Table of contents
Warming up engine ....................... 25
Direct drive models........................... 25
Checks after engine warm-up ....... 25
Stop switches ................................... 25
Shifting .......................................... 25
Forward ............................................ 25
Reverse............................................ 25
Stopping boat ................................ 25
Stopping engine ............................ 26
Procedure......................................... 26
Trimming outboard motor .............. 26
Adjusting trim angle for manual tilt
models .......................................... 27
Adjusting boat trim............................ 27
Tilting up and down ....................... 28
Procedure for tilting up
(manual tilt models)....................... 29
Procedure for tilting down
(manual tilt models)....................... 29
Cruising in other conditions........... 30
Maintenance..................................... 31
Transporting and storing outboard
motor .......................................... 31
Clamp screw mounting models ........ 31
Storing outboard motor..................... 31
Procedure......................................... 32
Lubrication........................................ 33
Cleaning the outboard motor............ 33
Checking painted surface of motor... 33
Periodic maintenance.................... 33
Replacement parts ........................... 33
Severe operating conditions............. 33
Maintenance chart 1......................... 34
Maintenance chart 2......................... 35
Greasing........................................... 36
Cleaning and adjusting spark plug... 37
Inspecting idling speed..................... 37
Checking wiring and connectors ...... 38
Checking propeller ........................... 38
Removing propeller.......................... 38
Installing propeller............................ 39
Changing gear oil ............................. 39
Inspecting and replacing anode(s) ... 40
Trouble Recovery............................ 42
Troubleshooting ............................ 42
Temporary action in emergency ... 45
Impact damage................................. 45
Starter will not operate ..................... 45
Emergency starting engine............... 46
Treatment of submerged motor .... 47
Safety information
EMU33622
Outboard motor safety
Observe these precautions at all times.
EMU37660
Propeller
People can be injured or killed if they come in
contact with the propeller. The propeller has
sharp edges and can cause injuries even
when it is stationary.
● Shut off the engine when a person is in the
water near you.
● Keep people out of reach of the propeller,
even when the engine is off.
EMU33630
Rotating parts
Hands, feet, hair, jewelry, clothing, PFD
straps, etc. can become entangled with internal rotating parts of the engine, resulting in serious injury or death.
Keep the top cowling in place whenever possible. Do not remove or replace the cowling
with the engine running.
Only operate the engine with the cowling removed according to the specific instructions in
the manual. Keep hands, feet, hair, jewelry,
clothing, PFD straps, etc. away from any exposed moving parts.
EMU33640
Hot parts
During and after operation, engine parts are
hot enough to cause burns. Avoid touching
any parts under the top cowling until the engine has cooled.
EMU33650
Electric shock
Do not touch any electrical parts while starting
or operating the engine. They can cause
shock or electrocution.
EMU33671
Engine shut-off cord (lanyard)
Attach the engine shut-off cord so that the engine stops if the operator falls overboard or
leaves the helm. This prevents the boat from
running away under power and leaving people stranded, or running over people or objects.
Always attach the engine shut-off cord to a
secure place on your clothing or your arm or
leg while operating. Do not remove it to leave
the helm while the boat is moving. Do not attach the cord to clothing that could tear loose,
or route the cord where it could become entangled, preventing it from functioning.
Do not route the cord where it is likely to be
accidentally pulled out. If the cord is pulled
during operation, the engine will shut off and
you will lose most steering control. The boat
could slow rapidly, throwing people and objects forward.
EMU33810
Gasoline
Gasoline and its vapors are highly flammable and explosive. Always, refuel accord-
ing to the procedure on page 22 to reduce the
risk of fire and explosion.
EMU33820
Gasoline exposure and spills
Take care not to spill gasoline. If gasoline
spills, wipe it up immediately with dry rags.
Dispose of rags properly.
If any gasoline spills onto your skin, immediately wash with soap and water. Change
clothing if gasoline spills on it.
If you swallow gasoline, inhale a lot of gasoline vapor, or get gasoline in your eyes, get
immediate medical attention. Never siphon
fuel by mouth.
EMU33900
Carbon monoxide
This product emits exhaust gases which contain carbon monoxide, a colorless, odorless
gas which may cause brain damage or death
when inhaled. Symptoms include nausea,
dizziness, and drowsiness. Keep cockpit and
cabin areas well ventilated. Avoid blocking exhaust outlets.
1
Safety information
EMU33780
Modifications
Do not attempt to modify this outboard motor.
Modifications to your outboard motor may reduce safety and reliability, and render the outboard unsafe or illegal to use.
EMU33740
Boating safety
This section includes a few of the many important safety precautions that you should follow when boating.
EMU33710
Alcohol and drugs
Never operate after drinking alcohol or taking
drugs. Intoxication is one of the most common
factors contributing to boating fatalities.
EMU33720
Personal flotation devices
Have an approved personal flotation device
(PFD) on board for every occupant. Yamaha
recommends that you must wear a PFD
whenever boating. At a minimum, children
and non-swimmers should always wear
PFDs, and everyone should wear PFDs when
there are potentially hazardous boating conditions.
EMU33731
People in the water
Always watch carefully for people in the water, such as swimmers, skiers, or divers,
whenever the engine is running. When someone is in the water near the boat, shift into
neutral and stop the engine.
Stay away from swimming areas. Swimmers
can be hard to see.
The propeller can keep moving even when
the motor is in neutral. Stop the engine when
a person is in the water near you.
EMU33751
Passengers
Consult your boat manufacturer’s instructions
for details about appropriate passenger locations in your boat and be sure all passengers
are positioned properly before accelerating
and when operating above an idle speed.
Standing or sitting in non-designated locations may result in being thrown either overboard or within the boat due to waves, wakes,
or sudden changes in speed or direction.
Even when people are positioned properly,
alert your passengers if you must make any
unusual maneuver. Always avoid jumping
waves or wakes.
EMU33760
Overloading
Do not overload the boat. Consult the boat capacity plate or boat manufacturer for maximum weight and number of passengers. Be
sure that weight is properly distributed according to the boat manufacturers instructions. Overloading or incorrect weight
distribution can compromise the boats handling and lead to an accident, capsizing or
swamping.
EMU33772
Avoid collisions
Scan constantly for people, objects, and other
boats. Be alert for conditions that limit your
visibility or block your vision of others.
ZMU06025
Operate defensively at safe speeds and keep
a safe distance away from people, objects,
and other boats.
● Do not follow directly behind other boats or
waterskiers.
2
Safety information
● Avoid sharp turns or other maneuvers that
make it hard for others to avoid you or understand where you are going.
● Avoid areas with submerged objects or
shallow water.
● Ride within your limits and avoid aggressive
maneuvers to reduce the risk of loss of control, ejection, and collision.
● Take early action to avoid collisions. Re-
member, boats do not have brakes, and
stopping the engine or reducing throttle can
reduce the ability to steer. If you are not
sure that you can stop in time before hitting
an obstacle, apply throttle and turn in another direction.
EMU33790
Weather
Stay informed about the weather. Check
weather forecasts before boating. Avoid boating in hazardous weather.
EMU33880
Passenger training
Make sure at least one other passenger is
trained to operate the boat in the event of an
emergency.
EMU33890
Boating safety publications
Be informed about boating safety. Additional
publications and information can be obtained
from many boating organizations.
EMU33600
Laws and regulations
Know the marine laws and regulations where
you will be boating- and obey them. Several
sets of rules prevail according to geographic
location, but all are basically the same as the
International Rules of the Road.
3
EMU25171
Identification numbers record
EMU31290
Outboard motor serial number
The outboard motor serial number is stamped
on the label attached to the upper part of the
swivel bracket.
Record your outboard motor serial number in
the spaces provided to assist you in ordering
spare parts from your Yamaha dealer or for
reference in case your outboard motor is stolen.
1. Outboard motor serial number location
General information
1. C-Tick label location
ZMU01697
EMU25213
C-Tick label
Engines affixed with this label conform to certain portion(s) of the Australian Radio Communications Act.
4
General information
EMU33520
Read manuals and labels
Before operating or working on this motor:
● Read this manual.
● Read any manuals supplied with the boat.
● Read all labels on the outboard motor and the boat.
If you need any additional information, contact your Yamaha dealer.
EMU33831
Warning labels
If these labels are damaged or missing, contact your Yamaha dealer for replacements.
2C
2
3
1
ZMU06031
5
General information
12
3
EMU33922
Contents of labels
The above warning labels mean as follows.
1
EWM01701
WARNING
Gasoline is highly flammable and explosive. Shut off engine before refueling.
Tighten tank cap and air vent screw when
not in use.
3
EWM01711
WARNING
● Read Owner’s Manuals and labels.
● Wear an approved personal flotation de-
vice (PFD).
● Ensure shift control is in neutral before
starting engine.
ZMU05810
2
EWM01681
WARNING
● Keep hands, hair, and clothing away
from rotating parts while the engine is
running.
● Do not touch or remove electrical parts
when starting or during operation.
6
General information
EMU35132
Symbols
The following symbols mean as follows.
Notice/Warning
ZMU05696
Read Owner’s Manual
Electrical hazard
ZMU05666
ZMU05664
Hazard caused by continuous rotation
ZMU05665
7
Specifications and requirements
T
EMU31480
Specifications
IP:
“(AL)” stated in the specification data below
represents the numerical value for the aluminum propeller installed.
Likewise, “(SUS)” represents the value for
stainless steel propeller installed and “(PL)”
for plastic propeller installed.
EMU2821E
Dimension:
Overall length:
603 mm (23.7 in)
Overall width:
240 mm (9.4 in)
Overall height S:
916 mm (36.1 in)
Transom height S:
417 mm (16.4 in)
Weight (PL) S:
9.8 kg (22 lb)
Performance:
Full throttle operating range:
4000–5000 r/min
Maximum output:
1.5 kW@4500 r/min (2 HP@4500 r/min)
Idling speed:
1150 ±50 r/min
Engine:
Type:
2-stroke S
Displacement:
50.0 cm³
Bore × stroke:
42.0 × 36.0 mm (1.65 × 1.42 in)
Ignition system:
CDI
Spark plug (NGK):
BR7HS
Spark plug gap:
0.6–0.7 mm (0.024–0.028 in)
Control system:
Tiller
Starting system:
Manual
Starting carburetion system:
Choke valve
Drive unit:
Gear positions:
Forward
Gear ratio:
2.08 (27/13)
Trim and tilt system:
Manual tilt
Propeller mark:
A
Fuel and oil:
Recommended fuel:
Regular unleaded gasoline
Fuel tank capacity (built in type):
1.2 L (0.32 US gal, 0.26 Imp.gal)
Recommended engine oil:
YAMALUBE 2-stroke outboard motor oil
Fuel:oil ratio:
Regular gasoline:
100 :1
Lubrication:
Pre-mixed fuel and oil
Recommended gear oil:
Hypoid gear oil SAE#90
Gear oil quantity:
0.045 L (0.048 US qt, 0.040 Imp.qt)
Tightening torque for engine:
Spark plug:
25.0 Nm (2.55 kgf-m, 18.4 ft-lb)
EMU33554
Installation requirements
EMU33563
Boat horsepower rating
EWM01560
WARNING
Overpowering a boat can cause severe instability.
8
Specifications and requirements
Before installing the outboard motor(s), confirm that the total horsepower of your motor(s)
does not exceed the boats maximum horsepower rating. See the boat’s capacity plate or
contact the manufacturer.
EMU33571
Mounting motor
EWM01570
WARNING
● Improper mounting of the outboard mo-
tor could result in hazardous conditions
such as poor handling, loss of control,
or fire hazards.
● Because the motor is very heavy, spe-
cial equipment and training is required
to mount it safely.
Your dealer or other person experienced in
proper rigging should mount the motor using
correct equipment and complete rigging instructions. For further information, see page
16.
EMU34192
Propeller selection
Next to selecting an outboard, choosing the
right propeller is one of the most important
purchasing decisions a boater can make. The
type, size, and design of your propeller have
a direct impact on acceleration, top speed,
fuel economy, and even engine life. Yamaha
designs and manufactures propellers for every Yamaha outboard motor and every application.
Your outboard motor came with a Yamaha
propeller chosen to perform well over a range
of applications, but there may be uses where
a different propeller would be more appropriate.
Your Yamaha dealer can help you select the
right propeller for your boating needs. Select
a propeller that will allow the engine to reach
the middle or upper half of the operating
range at full throttle with the maximum boat-
load. Generally, chose a larger pitch propeller
for a smaller operating load and a smaller
pitch propeller for a heavier load. If you carry
loads that vary widely, chose the propeller
that lets the engine run in the proper range for
your maximum load but remember that you
may need to reduce your throttle setting to
stay within the recommended engine speed
range when carrying lighter loads.
For instructions on propeller removal and installation, see page 38.
x
-
123
ZMU04604
1. Propeller diameter in inches
2. Propeller pitch in inches
3. Type of propeller (propeller mark)
EMU25651
Engine oil requirements
Recommended engine oil:
YAMALUBE 2-stroke outboard motor
oil
If the recommended engine oil is not available, another 2-stroke engine oil with an
NMMA-certified TC-W3 rating may be used.
EMU36360
Fuel requirements
EMU36771
Gasoline
Use a good quality gasoline that meets the
minimum octane rating. If knocking or pinging
occurs, use a different brand of gasoline or
9
Specifications and requirements
premium unleaded fuel. Yamaha recomends
that you use alcohol-free (see Gasohol) gasoline whenever possible.
Recommended gasoline:
Regular unleaded gasoline
ECM01981
NOTICE
● Do not use leaded gasoline. Leaded gas-
oline can seriously damage the engine.
● Avoid getting water and contaminants in
the fuel tank. Contaminated fuel can
cause poor performance or engine damage. Use only fresh gasoline that has
been stored in clean containers.
Gasohol
There are two types of gasohol: gasohol containing ethanol (E10) and that containing
methanol. Ethanol can be used if the ethanol
content does not exceed 10% and the fuel
meets the minimum octane ratings. All ethanol blends containing more than 10% ethanol
can cause fuel system damage or cause engine starting and running problems. Yamaha
does not recommend gasohol containing
methanol because it can cause fuel system
damage or engine performance problems.
EMU36880
Muddy or acidic water
Yamaha strongly recommends that you have
your dealer install the optional chromium-plated water pump kit if you use the outboard motor in muddy or acidic water conditions.
However, depending on the model it might not
be required.
EMU36330
Anti-fouling paint
A clean hull improves boat performance. The
boat bottom should be kept as clean of marine
growth as possible. If necessary, the boat bot-
tom can be coated with an anti-fouling paint
approved for your area to inhibit marine
growth.
Do not use anti-fouling paint which includes
copper or graphite. These paints can cause
more rapid engine corrosion.
EMU36341
Motor disposal requirements
Never illegally discard (dump) the motor.
Yamaha recommends consulting the dealer
about discarding the motor.
EMU36351
Emergency equipment
Keep the following items onboard in case
there is trouble with the motor.
● A tool kit with assorted screwdrivers, pliers,
wrenches (including metric sizes), and
electrical tape.
● Waterproof flashlight with extra batteries.
● An extra engine shut-off cord (lanyard) with
clip.
● Spare parts, such as an extra set of spark
plugs.
Consult your Yamaha dealer for details.
10
Components
T
EMU2579M
Components diagram
IP:
* May not be exactly as shown; also may not be included as standard equipment on all models.
2C
1. Air vent screw
2. Fuel tank cap
3. Top cowling
4. Anti-cavitation plate
5. Propeller
6. Cooling water inlet
7. Clamp bracket
8. Clamp screw
9. Tiller handle
10.Fuel cock
11.Manual starter handle
12.Choke knob
13.Engine stop button/Engine shut-off switch
14.Trim rod
15.Restraint cable attachment
16.Tilt support knob
17.Throttle lever
EMU25821
Fuel tank
If your model included a fuel tank, its parts
and functions are as follows.
11
Components
1. Air vent screw
2. Fuel tank cap
EMU25850
Fuel tank cap
This cap seals the fuel tank. When removed,
the tank can be filled with fuel. To remove the
cap, turn it counterclockwise.
EMU25860
Air vent screw
This screw is on the fuel tank cap. To loosen
the screw, turn it counterclockwise.
EMU25872
Fuel cock
The fuel cock turns on and off the supply of
fuel from the fuel tank to the engine.
1. Fuel cock
EMU25881
Close
To stop fuel flow to the engine, turn the lever
or knob to close position.
Always turn the lever or knob to close position
when the engine is not running.
1. Close position
EMU25891
Open
With the lever/knob in this position, fuel flows
to the carburetor.
Normal running is done with the lever/knob in
this position.
1. Open position
EMU25911
Tiller handle
To change direction, move the tiller handle to
the left or right as necessary.
12
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