Yamaha F15 Owners Manual

 
Operation 
45 
EMU28071 
Cruising in shallow water (manual tilt 
models)
WARNING
 
EWM00710  
 
Place the gear shift in neutral before us-
ing the shallow water cruising system. 
 
Run the boat at the lowest possible
speed when using the shallow water
cruising system. The tilt lock mecha-
nism does not work while the shallow
water cruising system is being used.
Hitting an underwater obstacle could
cause the outboard motor to lift out of
the water, resulting in loss of control. 
 
Do not rotate the...

 
Operation 
46 
2. Place the tilt lock lever in the release/up
position.
3. Slightly tilt the outboard motor up. The
tilt support bar will lock automatically,
supporting the outboard motor in a par-
tially raised position.
NOTE:
 
This outboard motor has 2 positions for shal- 
low water cruising.
4. To return the outboard motor to the nor-
mal running position, place the gear shift
lever in neutral, then place the tilt lock le-
ver in the lock/down position.5. Slightly tilt the outboard motor up until...

 
Operation 
47 
2. Slightly tilt the outboard motor up to the
desired position using the power trim / tilt
switch.3. To return the outboard motor to the nor-
mal running position, press the power
trim / tilt switch and slowly tilt the out-
board motor down. 
EMU28191 
Cruising in other conditions 
Cruising in salt water 
After operating in salt water, wash out the
cooling water passages with fresh water to
prevent them from becoming clogged with
salt deposits.
NOTE:
 
For cooling system flushing...

 
48 
Maintenance 
EMU28217 
Specifications 
Dimension: 
Overall length: 
F15EH 1001 mm (39.4 in)
F15MH 1001 mm (39.4 in)
F15PH 1001 mm (39.4 in)
F15PR 643 mm (25.3 in)
F9.9ER2 643 mm (25.3 in)
F9.9MH2 1001 mm (39.4 in)
FT9.9DWH 1105 mm (43.5 in)
T9.9EH2 1001 mm (39.4 in)
T9.9ER2 643 mm (25.3 in)
Overall width: 
F15EH 427 mm (16.8 in)
F15MH 427 mm (16.8 in)
F15PH 427 mm (16.8 in)
F15PR 369 mm (14.5 in)
F9.9ER2 369 mm (14.5 in)
F9.9MH2 427 mm (16.8 in)
FT9.9DWH 501 mm (19.7 in)
T9.9EH2 427 mm (16.8 in)...

 
Maintenance 
49 
F9.9MH2 7.3 kW@5000 r/min (10 
HP@5000 r/min)
FT9.9DWH 7.3 kW@5000 r/min (10 
HP@5000 r/min)
T9.9EH2 7.3 kW@5000 r/min (10 
HP@5000 r/min)
T9.9ER2 7.3 kW@5000 r/min (10 
HP@5000 r/min)
Idling speed (in neutral): 
F15EH 950  
± 
50 r/min
F15MH 950  
± 
50 r/min
F15PH 950  
± 
50 r/min
F15PR 950  
± 
50 r/min
F9.9ER2 950  
± 
50 r/min
F9.9MH2 950  
± 
50 r/min
FT9.9DWH 1050  
± 
50 r/min
T9.9EH2 1050  
± 
50 r/min
T9.9ER2 1050  
± 
50 r/min 
Engine: 
Type: 
4-stroke L
Displacement:...

 
Maintenance 
50 
F15EH 10.0 A
F15PH 10.0 A
F15PR 10.0 A
F9.9ER2 10.0 A
FT9.9DWH 10.0 A
T9.9EH2 10.0 A
T9.9ER2 10.0 A 
Drive unit: 
Gear positions: 
Forward-neutral-reverse
Gear ratio: 
F15EH 2.08 (27/13)
F15MH 2.08 (27/13)
F15PH 2.08 (27/13)
F15PR 2.08 (27/13)
F9.9ER2 2.08 (27/13)
F9.9MH2 2.08 (27/13)
FT9.9DWH 2.92 (38/13)
T9.9EH2 2.92 (38/13)
T9.9ER2 2.92 (38/13)
Trim and tilt system: 
F15EH Manual tilt
F15MH Manual tilt
F15PH Power tilt
F15PR Power tilt
F9.9ER2 Manual tilt
F9.9MH2 Manual tilt...

 
Maintenance 
51 
(13.05 Imp.oz)
T9.9ER2 370.0 cm 
3
 
 (12.51 US oz) 
(13.05 Imp.oz) 
Tightening torque for engine: 
Spark plug: 
18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
Propeller nut: 
F15EH 17.0 Nm (12.5 ft-lb) (1.73 
kgf-m)
F15MH 17.0 Nm (12.5 ft-lb) (1.73 
kgf-m)
F15PH 17.0 Nm (12.5 ft-lb) (1.73 
kgf-m)
F15PR 17.0 Nm (12.5 ft-lb) (1.73 
kgf-m)
F9.9ER2 17.0 Nm (12.5 ft-lb) (1.73 
kgf-m)
F9.9MH2 17.0 Nm (12.5 ft-lb) (1.73 
kgf-m)
FT9.9DWH 21.0 Nm (15.5 ft-lb) (2.14 
kgf-m)
T9.9EH2 21.0 Nm (15.5 ft-lb)...

 
Maintenance 
52
NOTE:
 
Place a towel or something similar under the 
outboard motor to protect it from damage. 
EMU28241 
Storing outboard motor 
When storing your Yamaha outboard motor
for prolonged periods of time (2 months or
longer), several important procedures must
be performed to prevent excessive damage.
It is advisable to have your outboard motor
serviced by an authorized Yamaha dealer
prior to storage. However, you, the owner,
with a minimum of tools, can perform the fol-
lowing procedures....

 
Maintenance 
53 
5. Fill the tank with fresh water to above the
level of the anti-cavitation plate.
CAUTION:
 
ECM00300  
Do not run the engine without supplying
it with cooling water. Either the engine
water pump will be damaged or the en-
gine will be damaged from overheating.
Before starting the engine, be sure to
supply water to the cooling water passag- 
es.
CAUTION:
 
ECM00290  
If the fresh water level is below the level
of the anti-cavitation plate, or if the water
supply is insufficient,...

 
Maintenance 
54 
2. Spray the outboard motor exterior with
“Yamaha Silicone Protectant” (Part No.
LUB-SILCNE-13-00).
3. Wax the cowling with a non-abrasive
wax such as “Yamaha Silicone Wax”
(Part No. ACC-11000-15-02). 
EMU28430 
Battery care
WARNING
 
EWM00330  
Battery electrolytic fluid is dangerous; it
contains sulfuric acid and therefore is
poisonous and highly caustic.
Always follow these preventive mea-
sures: 
 
Avoid bodily contact with electrolytic
fluid as it can cause severe burns or...