Yamaha F50 Manual

 
Basic components 
15 
trol lever in the neutral position and lift the
neutral throttle lever.
NOTE:
 
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. 
EMU25911 
Tiller handle 
To change direction, move the tiller handle to
the left or right as necessary. 
EMU25922 
Gear shift lever 
Pulling the gear shift lever towards you puts
the engine in forward gear so...

 
Basic components 
16 
EMU25971 
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
 
EWM00031  
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,...

 
Basic components 
17
NOTE:
 
The engine cannot be started with the lock 
plate removed. 
EMU26001 
Engine stop button 
To open the ignition circuit and stop the en-
gine, push this button. 
EMU26090 
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...

 
Basic components 
18 
EMU31430 
Steering friction adjuster 
A friction device provides adjustable resis-
tance to the steering mechanism, and can be
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”.
WARNING
 
EWM00040  
Do not overtighten the friction adjuster. If
there is too much resistance, it could be
difficult...

 
Basic components 
19 
EMU26151 
Power trim and tilt switch on bottom 
engine cowling 
The power trim and tilt switch is located on
the side of the bottom engine cowling. Press-
ing the switch “” (up) trims the outboard
motor up, then tilts it up. Pressing the switch
“” (down) tilts the outboard motor down
and trims it down. When the switch is re-
leased, the outboard motor will stop in its
current position.
WARNING
 
EWM01030  
Use the power trim and tilt switch located
on the bottom engine cowling...

 
Basic components 
20 
EMU26241 
Trim tab with anode 
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.
WARNING
 
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. 
If the boat tends to veer the left (port side),
turn the...

 
Basic components 
21 
EMU26372 
Top cowling lock lever(s) (turn type) 
To remove the engine top cowling, turn the
lock lever(s) and lift off the cowling. When in-
stalling the cowling, check to be sure it fits
properly in the rubber seal. Then lock the
cowling again by returning the lever(s) to the
lock position. 
EMU26460 
Flushing device 
This device is used to clean the cooling wa-
ter passages of the motor using a garden
hose and tap water.
NOTE:
 
For details on usage, see page 56. 
EMU31702...

 
Basic components 
22 
EMU26491 
Digital tachometer 
The tachometer shows the engine speed
and has the following functions.
NOTE:
 
All segments of the display will light momen-
tarily after the main switch is turned on and 
will return to normal thereafter.
NOTE:
 
The water separator and engine trouble
warning indicators only operate when the en-
gine is equipped with the appropriate func- 
tions. 
EMU26503 
Low oil pressure warning indicator 
If oil pressure drops too low, this indicator will
flash....

 
Basic components 
23 
ous engine damage will occur. 
 
The low oil pressure warning indicator
does not indicate the engine oil level.
Use the oil dipstick to check the re-
maining oil quantity. For further infor- 
mation, see page 37. 
EMU26572 
Overheat warning indicator 
If the engine temperature rises too high, this
indicator will flash. For further information on
reading the indicator, see page 33.
CAUTION:
 
ECM00050  
Do not continue to run the engine if the
overheat warning indicator is on....

 
Basic components 
24
NOTE:
 
After the main switch is first turned on, all
segments of the display come on as a test.
After a few seconds, the gauge will change
to normal operation. Watch the gauge when
turning on the main switch to make sure all 
segments come on.
NOTE:
 
The speedometer displays km/h, mph, or
knots, according to operator preference. Se-
lect the desired unit of measurement by set-
ting the selector switch on the back of the 
gauge. See the illustration for settings. 
EMU26610 
Trim...