Yamaha E70 Owners Manual

							Components
25
EMU25802
Fuel tank
If your model was equipped with a portable
fuel tank, its function is as follows.
WA R N I N G
EWM00020
The fuel tank supplied with this engine is
its dedicated fuel reservoir and must not
be used as a fuel storage container. Com-
mercial users should conform to relevant
licensing or approval authority regula-
tions.
EMU25830
Fuel joint
This joint is used to connect the fuel line.
1
46 3
2
5
ZMU05429
1. Tachometer unit (Square type)*
2. Tachometer unit (Round type)*
3. Speedometer unit (Square type)*
4. Speed & fuel meter unit (Square type)*
5. Speed & fuel meter unit (Round type)*
6. Fuel management meter (Square type)*
1. Fuel joint
2. Fuel gauge
3. Fuel tank cap
4. Air vent screw
ZMU02284
31
42
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							Components
26
EMU25841
Fuel gauge
This gauge is located on either the fuel tank
cap or on the fuel joint base. It shows the ap-
proximate amount of fuel remaining in the
tank.
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.
EMU26181
Remote control box
The remote control lever actuates both the
shifter and the throttle. The electrical switch-
es are mounted on the remote control box.
EMU26190
Remote control lever
Moving the lever forward from the neutral po-
sition engages forward gear. Pulling the le-
ver back from neutral engages reverse. Theengine will continue to run at idle until the le-
ver is moved about 35 (a detent can be felt).
Moving the lever farther opens the throttle,
and the engine will begin to accelerate.
EMU26201
Neutral interlock trigger
To shift out of neutral, first pull the neutral in-
terlock trigger up.
EMU26212
Neutral throttle lever
To open the throttle without shifting into ei-
ther forward or reverse, put the remote con-
1. Power trim and tilt switch
2. Remote control lever
3. Neutral interlock trigger
4. Neutral throttle lever
5. Main switch
6. Engine shut-off switch
7. Throttle friction adjuster
1. Neutral “ ”
2. Forward “ ”
3. Reverse “ ”
4. Shift
5. Fully closed
6. Throttle
7. Fully open
1. Neutral interlock trigger
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							Components
27
trol lever in the neutral position and lift the
neutral throttle lever.
TIP:
The neutral throttle lever will operate only
when the remote control lever is in neutral.
The remote control lever will operate only
when the neutral throttle lever is in the closed
position.
EMU25912
Tiller handle
To change direction, move the tiller handle to
the left or right as necessary.
EMU25923
Gear shift lever
Move the gear shift lever forward to engage
the forward gear or rearward to engage the
reverse gear.
EMU25941
Throttle grip
The throttle grip is on the tiller handle. Turn
the grip counterclockwise to increase speed
and clockwise to decrease speed.
EMU25961
Throttle indicator
The fuel consumption curve on the throttle
indicator shows the relative amount of fuel
consumed for each throttle position. Choose
the setting that offers the best performance
and fuel economy for the desired operation.
1. Fully open
2. Fully closed
1. Forward “ ”
2. Neutral “ ”
3. Reverse “ ”
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							Components
28
EMU25976
Throttle friction adjuster
A friction device provides adjustable resis-
tance to movement of the throttle grip or the
remote control lever, and can be set accord-
ing to operator preference.
To increase resistance, turn the adjuster
clockwise. To decrease resistance, turn the
adjuster counterclockwise. WARNING! Do
not overtighten the friction adjuster. If
there is too much resistance, it could be
difficult to move the remote control lever
or throttle grip, which could result in an
accident.
 [EWM00032] When constant speed is desired, tighten the
adjuster to maintain the desired throttle set-
ting.
EMU25994
Engine shut-off cord (lanyard) and 
clip
The clip must be attached to the engine shut-
off switch for the engine to run. The cord
should be attached to a secure place on the
operator’s clothing, or arm or leg. Should the
operator fall overboard or leave the helm, the
cord will pull out the clip, stopping ignition to
the engine. This will prevent the boat from
running away under power. WARNING! At-
tach the engine shut-off cord to a secure
place on your clothing, or your arm or leg
while operating. Do not attach the cord to
clothing that could tear loose. Do not
route the cord where it could become en-
tangled, preventing it from functioning.
Avoid accidentally pulling the cord dur-
ing 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.
 [EWM00122] 
1. Throttle indicator
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							Components
29
EMU26002
Engine stop button
The engine stop button stops the engine
when the button is pushed.
EMU26091
Main switch
The main switch controls the ignition system;
its operation is described below.
●“” (off)
With the main switch in the “ ” (off) posi-
tion, the electrical circuits are off, and the key
can be removed.
●“” (on)
With the main switch in the “ ” (on) posi-
tion, the electrical circuits are on, and the key
cannot be removed.
●“” (start)
With the main switch in the “ ” (start) po-
sition, the starter motor turns to start the en-
gine. When the key is released, it returns
automatically to the “ ” (on) position.
EMU31432
Steering friction adjuster
A friction device provides adjustable resis-
tance to the steering mechanism, and can be
1. Cord
2. Clip
3. Engine shut-off switch
1. Cord
2. Clip
3. Engine shut-off switch
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							Components
30
set according to operator preference. An ad-
juster lever is located on the bottom of the
tiller handle bracket.
To increase resistance, turn the lever to the
port side “A”.
To decrease resistance, turn the lever to the
starboard side “B”.
WA R N I N G
EWM00040
Do not overtighten the friction adjuster. If
there is too much resistance, it could be
difficult to steer, which could result in an
accident.
If the resistance does not increase even
when the lever is turned to the port side “A”,
make sure that the nut is tightened to the
specified torque.
TIP:
●Steering movement is blocked when the
adjuster lever is set to the “A” position.
●Check the tiller handle for smooth move-
ment when the lever is turned to the star-
board side “B”.
●Do not apply lubricants such as grease to
the friction areas of the steering friction ad-
juster.
EMU26143
Power trim and tilt switch on remote 
control or tiller handle
The power trim and tilt system adjusts the
outboard motor angle in relation to the tran-
som. Pressing the switch “ ” (up) trims the
outboard motor up, and then tilts it up. Press-
ing the switch “ ” (down) tilts the outboard
motor down and trims it down. When the
switch is released, the outboard motor will
stop in its current position.
For instructions on using the power trim and
tilt switch, see pages 64 and 66.
1. Nut
ZMU02810
B
A
Nut tightening torque:
3.8 Nm (0.38 kgf-m, 2.8 ft-lb)
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							Components
31
EMU26154
Power trim and tilt switch on bottom 
cowling
The power trim and tilt switch is located on
the side of the bottom cowling. Pushing the
switch “ ” (up) trims the outboard motor up,
and then tilts it up. Pushing the switch “ ”
(down) tilts the outboard motor down and
trims it down. When the switch is released,
the outboard motor will stop in its current po-
sition.
For instructions on using the power trim and
tilt switch, see page 66.
WA R N I N G
EWM01031
Use the power trim and tilt switch located
on the bottom cowling only when the boat
is at a complete stop with the engine off.
Attempting to use this switch while the
boat is moving could increase the risk of
falling overboard and could distract the
operator, increasing the risk of collision
with another boat or an obstacle.
EMU30901
Variable trolling RPM switches
The trolling speed can be adjusted when the
outboard motor is trolling. Press the “ ”
switch to increase the trolling speed and
press the “ ” switch to decrease the trolling
speed.
TIP:
●The trolling speed changes approximately
50 r/min each time a switch is pressed.
●If the trolling speed has been adjusted, the
engine returns to the normal trolling speed
when the engine is stopped and restarted
or when the engine speed exceeds ap-
proximately 3000 r/min.
●For instructions on using the variable troll-
ing RPM switches, see page 63.
1. Power trim and tilt switch
1. Variable trolling RPM switch
UP
DN
ZMU03634
1
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							Components
32
EMU26244
Trim tab with anode
WA R N I N G
EWM00840
An improperly adjusted trim tab could
cause difficult steering. Always test run
after the trim tab has been installed or re-
placed to be sure steering is correct. Be
sure you have tightened the bolt after ad-
justing the trim tab.
The trim tab should be adjusted so that the
steering control can be turned to either the
right or left by applying the same amount of
force.
If the boat tends to veer to the left (port side),
turn the trim tab rear end to the port side “A”
in the figure. If the boat tends to veer to the
right (starboard side), turn the trim tab end to
the starboard side “B” in the figure.
NOTICE
ECM00840
The trim tab also serves as an anode to
protect the engine from electrochemical
corrosion. Never paint the trim tab as it
will become ineffective as an anode.
EMU26341
Tilt support lever for power trim and 
tilt model
To keep the outboard motor in the tilted up
position, lock the tilt support lever to the
clamp bracket.
NOTICE
ECM00660
Do not use the tilt support lever or knob
when trailering the boat. The outboard
motor could shake loose from the tilt sup-
port and fall. If the motor cannot be trail-
ered in the normal running position, use1. Trim tab
2. Bolt
3. Cap
123
ZMU02525
A B
1. Trim tab
2. Bolt
Bolt tightening torque:
F50, F60 18.0 Nm (1.8 kgf-m, 13 ft-lb)
F70, T50, T60 36.0 Nm 
(3.6 kgf-m, 26 ft-lb)
A
B
ZMU03097
1
2
ZMU03595
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							Components
33
an additional support device to secure it
in the tilt position.
EMU26373
Cowling lock lever(s) (turn type)
To remove the engine top cowling, turn the
cowling lock lever(s) and lift off the cowling.
When installing the cowling, check to be sure
it fits properly in the rubber seal. Then lock
the cowling again by returning the cowling
lock lever(s) to the lock position.
EMU26462
Flushing device
This device is used to clean the cooling wa-
ter passages of the motor using a garden
hose and tap water.
TIP:
For details on usage, see page 73.EMU33463
Fuel filter/Water separator
This engine has a combination fuel filter/wa-
ter separator and associated alert system. If
water separated from the fuel exceeds a
specific volume, the alert device of Com-
mand Link Tachometer will activate.
1. Cowling lock lever(s)
1. Flushing device
1
ZMU05093
1
ZMU05095
1. Flushing device
1ZMU07078
ZMU05474
ZMU07079
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							Components
34
Activation of alert device
●The water separator-alert indicator of
Command Link Tachometer will blink.
●The buzzer will sound intermittently only
when the gear shift is in neutral.
●If the alert system has activated, stop the
engine and consult a Yamaha dealer im-
mediately.
TIP:
Adding an in-line 10-micron fuel filter has
been show to greatly reduce the chance of
fuel contamination problems. Consult your
dealer for information about Yamaha 10-mi-
cron fuel filters if your boat does not have
one.
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