Yamaha F50 Service Manual

							62Y3A117-72
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7. Remove the reservoir cap 1
, and then
check the fluid level in the reservoir.
8. If necessary, add sufficient fluid of the
recommended type to the correct level.
NOTE:
The fluid level should be at the brim of the
filler hole.
9. Install the reservoir cap.
NOTE:
Repeat this procedure until the fluid remains
at the correct level.Recommended power trim and tilt fluid:
ATF Dexron II
 
Gear pump 
						

							BRKTBracket unit
7-7362Y3A11
Power trim and tilt motor7 
						

							62Y3A117-74
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No. Part name Q’ty RemarksTightening torques
Stage N·mkgf·mft·lb
1 Screw 3 M5 ×
 20 mm
2Yoke 1
3 O-ring 1
Not reusable
4 Armature 1
5 Bushing 1
6 Screw 2 M4 ×
 12 mm
7 Wire lead 1
8Brush 2 1
9Brush 1 1
10 Brush holder 1
11 Circuit breaker 1
12 Brush spring 2
13 PTT motor base 1
14 Oil seal 1
Not reusable
Power trim and tilt motor 
						

							BRKTBracket unit
7-7562Y3A11
Checking the power trim and tilt 
motor
1. Check the commutator for dirt or foreign
substances. Clean with #600 grit sand-
paper if necessary.
2. Check the commutator undercut for dirt
or foreign substances. Clean with com-
pressed air if necessary.
3. Measure the commutator diameter a
.
Replace if out of specification.
4. Check the armature coil for continuity.
Replace if out of specifications.5. Check the circuit breaker for continuity.
Replace if there is no continuity.
6. Measure the brush length. Replace if out
of specification.
7. Check the base for cracks or damage.
Replace if necessary. Commutator diameter limit a
:
21 mm (0.83 in)
Armature coil continuity
Commutator segments b
 Continuity
Segment-laminations c
 No continuity
Segment-shaft d
 No continuity
Brush length limit e
: 3.5 mm (0.14 in) 
						

							62Y3A117-76
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8. Check the bushing 1
 for damage or
wear. Replace if necessary.
Assembling the power trim and tilt 
motor
1. Install the oil seal 1
 and the bushing 2
into the motor base 3
 as shown.
2. Attach the circuit breaker 4
 onto brush 1
5
 together with the brush holder 6
 and
connect the wire lead 7
.
3. Install the springs 8
 into the motor base,
then the brush holder into the motor base
together with the brushes and circuit
breaker.
4. Install the armature 9
, O-ring 0
, and
yoke A
.
Installing the power trim and tilt
1. Fully tilt the outboard up, and then sup-
port it with the tilt stop lever 1
.
 WARNING
After tilting up the outboard, be sure to
support it with the tilt stop lever.
Otherwise, the outboard could suddenly
lower if the power trim and tilt unit should
lose fluid pressure.
Power trim and tilt motor 
						

							BRKTBracket unit
7-7762Y3A11
2. Install the shaft 2
 and bolts 3
 onto both
clamp brackets together with the power
trim and tilt/hydro tilt 4
.
3. Install the tilt ram upper end into the
swivel bracket with the shaft 5
 and cir-
clip(s) 6
.
4. Install the tilt pin 7
. 
						

							62Y3A117-78
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Power trim and tilt electrical system7
1Power trim and tilt motor
2Power trim and tilt relay
3Trailer switch
4Power trim and tilt switch
5Fuse
6Battery
7Trim sensor
ÈModels with trailer switchB: Black
G: Green
Gy : Gray
L: Blue
Lg : Light green
P: Pink
R: Red
Sb : Sky blue
Power trim and tilt motor / Power trim and tilt electrical system 
						

							BRKTBracket unit
7-7962Y3A11
Checking the fuse
1. Check the fuse and fuse holder for conti-
nuity. Replace if there is no continuity.
Checking the power trim and tilt 
relay
1. Check the power trim and tilt relay for
continuity. Replace if out of specification.
2. Connect the digital circuit tester between
power trim and tilt relay terminals 1
 and
3
.3. Connect the light green (Lg) lead to the
positive battery terminal and the black
(B) lead to the negative battery terminal
as shown.
4. Check for continuity between terminals
1
 and 3
. Replace if there is no continu-
ity.
5. Connect the digital circuit tester between
power trim and tilt relay terminals 2
 and
3
.
6. Connect the sky blue (Sb) lead to the
positive battery terminal and the black
(B) lead to the negative battery terminal
as shown.
7. Check for continuity between terminals
2
 and 3
. Replace if there is no continu-
ity.
Power trim and tilt relay continuity
Sky blue (Sb) – Black (B)
Light green (Lg) – Black (B)Continuity
Terminal 1
 – Terminal 4
 
Terminal 2
 – Terminal 4
 Continuity
Terminal 1
 – Terminal 3
 
Terminal 2
 – Terminal 3
 No continuity 
						

							62Y3A117-80
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Checking the power trim and tilt 
switch/trailer switch
1. Check the power trim and tilt
switch/trailer switch for continuity.
Replace if out of specification.
Checking the trim sensor 
1. Measure the trim sensor resistance.
Replace if out of specification.
NOTE:
Turn the lever 1
 and measure the resistance
as it gradually changes.
Lead color
Switch 
positionSky blue 
(Sb)Red (R)
Light green 
(Lg)
Up
Free
Down
Trim sensor resistance:
Pink (P) – Black (B)
10–288.3 Ω
 at 20 °C (68 °F)
Power trim and tilt electrical system 
						

							BRKTBracket unit
7-8162Y3A11
— MEMO —