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Yamaha F 15 Owners Manual

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Page 41

 
Operation 
35 
6. Turn the main switch to “” (start),
and hold it for a maximum of 5 seconds.
7. Immediately after the engine starts, re-
lease the main switch and allow it to re-
turn to “” (on).
CAUTION:
 
ECM00191  
 
Never turn the main switch to “”
(start) while the engine is running. 
 
Do not keep the starter motor turning
for more than 5 seconds. If the starter
motor is turned continuously for more
than 5 seconds, the battery will be
quickly discharged, thus making it im-
possible to start...

Page 42

 
Operation 
36 
you.
CAUTION:
 
ECM00220  
To change the boat direction or shifting
position from forward to reverse or vice-
versa, first close the throttle so that the 
engine idles (or runs at low speeds). 
EMU27763 
Forward (tiller handle and remote 
control models) 
Tiller control models
1. Place the throttle grip in the fully closed
position.
2. Move the gear shift lever quickly and
firmly from neutral to forward.Remote control models1. Pull up the neutral interlock trigger (if
equipped) and move...

Page 43

 
Operation 
37 
2. On models equipped with a tilt lock le-
ver, check that it is in the lock/down po-
sition.
3. Move the gear shift lever quickly and
firmly from neutral to reverse.Remote control models
1. Check that the tilt lock lever is in the lock
position.
2. Pull up the neutral interlock trigger (if
equipped) and move the remote control
lever quickly and firmly from neutral to
reverse.
 
EMU27820 
Stopping engine 
Before stopping the engine, first let it cool off
for a few minutes at idle or low...

Page 44

 
Operation 
38 
ping the engine immediately after operating
at high speed is not recommended. 
EMU27844 
Procedure 
1. Push and hold the engine stop button or
turn the main switch to “” (off).
2. After stopping the engine, disconnect
the fuel line if there is a fuel joint on the
outboard motor.
3. Tighten the air vent screw on the fuel
tank cap (if equipped).4. Remove the key if the boat will be left
unattended.
NOTE:
 
The engine can also be stopped by pulling
the lanyard and removing the lock plate...

Page 45

 
Operation 
39 
EMU27871 
Adjusting trim angle for manual tilt 
models 
There are 4 or 5 holes provided in the clamp
bracket to adjust the outboard motor trim an-
gle.
1. Stop the engine.
2. Remove the trim rod from the clamp
bracket while slightly tilting the outboard
motor up.3. Reposition the rod in the desired hole.
To raise the bow (“trim-out”), move the rod
away from the transom.
To lower the bow (“trim-in”), move the rod to-
ward the transom.
Make test runs with the trim set to different
angles...

Page 46

 
Operation 
40 
only when the boat is at a complete 
stop with the engine off. 
Tilt the engine to the desired angle using the
power tilt switch.
NOTE:
 
Stay within the trim operating angle when
trimming the outboard motor using the power 
tilt system.
To raise the bow (“trim-out”), tilt the engineup.
To lower the bow (“trim-in”), tilt the engine
down.
Make test runs with the trim set to different
angles to find the position that works best for
your boat and operating conditions. 
EMU27911 
Adjusting...

Page 47

 
Operation 
41 
Bow Down 
Too much trim-in causes the boat to “plow”
through the water, decreasing fuel economy
and making it hard to increase speed. Oper-
ating with excessive trim-in at higher speeds
also makes the boat unstable. Resistance at
the bow is greatly increased, heightening the
danger of “bow steering” and making opera-
tion difficult and dangerous.
NOTE:
 
Depending on the type of boat, the outboard
motor trim angle may have little effect on the 
trim of the boat when operating. 
EMU27933...

Page 48

 
Operation 
42 
2. Disconnect the fuel line from the out-
board motor.
3. Place the tilt lock lever (if equipped) in
the release/up position.
4. Pull up the shallow water lever (if
equipped).
5. Hold the rear of the top cowling with one
hand and tilt the engine up fully.
6. Push the tilt support knob into the clamp
bracket. Or the tilt support bar will turn to
the lock position automatically. 
EMU28005 
Procedure for tilting up 
Power trim and tilt models / power tilt models
1. Place the remote control...

Page 49

 
Operation 
43 
3. Press the power trim and tilt switch /
power tilt switch “” (up) until the out-
board motor has tilted up completely.4. Push the tilt support knob into the clamp
bracket or pull the tilt support lever to-
ward you to support the engine.
WARNING
 
EWM00260  
After tilting the outboard motor, be sure
to support it with the tilt support knob or
tilt support lever. Otherwise the outboard
motor could fall back down suddenly if oil
in the power trim and tilt unit loses pres- 
sure. 
5....

Page 50

 
Operation 
44 
from marine growth and corrosion which
could damage the power trim and tilt 
mechanism. 
EMU30190 
Procedure for tilting down (manual 
tilt models) 
1. Place the tilt lock lever in the lock posi-
tion.
2. Slightly tilt the engine up until the tilt sup-
port bar is automatically released.
3. Slowly tilt the engine down. 
EMU28053 
Procedure for tilting down 
Power trim and tilt models / power tilt models
1. Push the power tilt / power trim and tilt
switch “” (up) until the outboard motor...
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