Yamaha F50 Service Manual

62Y3A113-16
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4. Check that the TDC “T” mark a
 on the
flywheel magnet is aligned with the mag-
net base pointer b
.
Power trim and tilt unit3
Checking the power trim and tilt 
operation
1. Fully tilt the outboard up and down a few
times and check the entire trim and tilt
range for smooth operation. Check the
power trim and tilt fluid level if necessary.
NOTE:
Be sure to listen to the winding sound of the
PTT motor for smooth operation.
2. Fully tilt the outboard up, and then sup-
port it...

CHK 
ADJ
Periodic checks and adjustments
3-1762Y3A11
3. Remove the reservoir cap 3
, and then
check the fluid level in the reservoir.
NOTE:
The fluid level should be at the brim of the
filler hole.
4. If necessary, add sufficient fluid of the
recommended type to the correct level.
5. Install the reservoir cap, and then tighten
it to the specified torque.
6. Install the tilt pin to its original position.
Lower unit3
Checking the gear oil level
1. Fully tilt the outboard down.
2. Remove the check screw 1
,...

62Y3A113-18
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4. Place a drain pan under the drain screw
3
, remove the drain screw, then the
check screw 4
 to drain the oil.
5. Check the oil for metal, discoloration, and
viscosity. Check the internal parts of the
lower case if necessary.
6. Insert the gear oil tube or gear oil pump
into the drain hole and slowly fill the gear
oil until oil flows out of the check hole and
no air bubbles are visible.
7. Install the check screw, quickly install the
drain screw, and then tighten them to...

CHK 
ADJ
Periodic checks and adjustments
3-1962Y3A11
Checking the lower unit 
(for air leakage)
1. Remove the check screw 1
, and then
install the special service tool.
ÈFor USA and Canada
ÉFor worldwide
2. Apply the specified pressure to check
whether the lower unit can hold it for at
least 10 seconds.
CAUTION:
Do not over pressurize the lower unit, oth-
erwise the oil seals may be damaged.
NOTE:
Cover the check hole with a rag when remov-
ing the pressure/vacuum tester from the
lower unit.
3. If...

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ÈFT50C only
ÉEHD, ED models
ÊEHT, ET models
ËF50/F50A only
CAUTION:
Do not oil, grease, or paint the anodes,
otherwise they will be ineffective.
2. Replace the anodes and trim tab if
excessively eroded.
Checking the battery
1. Check the battery electrolyte level. If the
level is at or below the minimum level
mark a
, add distilled water until the level
is between the maximum and minimum
level marks.2. Check the specific gravity of the electro-
lyte. Fully charge the battery...

CHK 
ADJ
Periodic checks and adjustments
3-2162Y3A11
NOTE:
Batteries vary per manufacturer. The pro-
cedures mentioned in this manual may not
always apply, therefore, consult the instruc-
tion manual of the battery.
Disconnect the negative lead first, then the
positive lead.
Lubrication
1. Apply water resistant grease to the areas
shown.
ÈF50/F50A, T50/FT50B
ÉFT50C
Electrolyte specific gravity:
1.280 at 20 °C (68 °F)
S62Y3720
A 

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NOTE:
Apply grease to the grease nipple until it
flows from the bushings a
.
2. Apply anti-corrosion grease to the areas
shown.
General 

CHK 
ADJ
Periodic checks and adjustments
3-2362Y3A11
— MEMO — 

62Y3A11
FUEL
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Fuel system
Special service tools ..................................................................................... 4-1
Hose routing ................................................................................................... 4-2
Fuel and blowby hoses .............................................................................. 4-2
Cooling water hose .................................................................................... 4-3
Fuel line...

FUELFuel system
4-162Y3A11
Special service tools4
Pressure/vacuum tester
YB-35956-A
Inductive self-powered tachometer
YU-08036-B
Carburetor synchronizer
YU-08030
Vacuum/pressure pump gauge set
90890-06756Digital tachometer
90890-06760
Vacuum gauge
90890-03159
For USA and Canada
For worldwide