Yamaha 8 Cm Owners Manual

 
Operation 
26 
EMU27872 
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. Tilt the outboard motor up, and then re-
move the trim rod from the clamp brack-
et.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 to...

 
Operation 
27 
the boat is up about 3 to 5 degrees. With the
bow up, the boat may have a greater tenden-
cy to steer to one side or the other. Compen-
sate for this as you steer. The trim tab can
also be adjusted to help offset this effect.
When the bow of the boat is down, it is easier
to accelerate from a standing start onto
plane. 
Bow Up 
Too much trim-out puts the bow of the boat
too high in the water. Performance and econ-
omy are decreased because the hull of the
boat is pushing the water and...

 
Operation 
28 
will be tilted for more than a few minutes. 
Otherwise fuel may leak.
CAUTION:
 
ECM00231  
 
Before tilting the outboard motor, fol-
low the procedure under “Stopping en-
gine” in this chapter. Never tilt the
outboard motor while the engine is run-
ning. Severe damage from overheating
can result. 
 
Do not tilt up the engine by pushing the
tiller handle because this could break
the handle. 
 
Keep the power unit higher than the
propeller at all times. Otherwise water
could run into...

 
Operation 
29 
EMU28013 
Procedure for tilting down (manual 
tilt models) 
1. Slightly tilt the engine up.
2. On models equipped with a tilt support
knob, pull it out.
3. Slowly tilt the engine down. 
EMU28060 
Cruising in shallow water 
The outboard motor can be tilted up partially
to allow operation in shallow water. 
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...

 
Operation 
30 
3. The shallow water lever will lock, sup-
porting the outboard motor in a partially
raised position.
4. When lowering the outboard motor,
slightly tilt it up and push the shallow wa-
ter lever down. Slowly lower the out-
board motor to the normal position. 
EMU28192 
Cruising in other conditions 
Cruising in salt water 
After operating in salt water, flush the cooling
water passages with fresh water to prevent
them from becoming clogged with salt de-
posits.
NOTE:
 
For cooling system...

 
31 
Maintenance 
EMU31480 
Specifications
NOTE:
 
“(AL)” stated in the specification data below
represents the numerical value for the alumi-
num propeller installed.
Likewise, “(SUS)” represents the value for
stainless steel propeller installed and “(PL)” 
for plastic propeller installed. 
EMU28218 
Dimension: 
Overall length: 
802 mm (31.6 in)
Overall width: 
343 mm (13.5 in)
Overall height S: 
977 mm (38.5 in)
Transom height S: 
436 mm (17.2 in)
Weight (AL) S: 
27.0 kg (60 lb) 
Performance: 
Full...

 
Maintenance 
32 
EMU28222 
Transporting and storing 
outboard motor
WARNING
 
EWM00690  
 
Leaking fuel is a fire hazard. When
transporting and storing the outboard
motor, close the air vent screw and fuel
cock to prevent fuel from leaking. 
 
USE CARE when transporting fuel tank,
whether in a boat or car. 
 
DO NOT fill fuel container to maximum
capacity. Gasoline will expand consid-
erably as it warms up and can build up
pressure in the fuel container. This can
cause fuel leakage and a potential...

 
Maintenance 
33 
lowing procedures.
CAUTION:
 
ECM01411  
 
Do not place the outboard motor on its
side before the cooling water has
drained from it completely, otherwise
water may enter the cylinder through
the exhaust port and cause engine trou-
ble. 
 
Store the outboard motor in a dry, well- 
ventilated place, not in direct sunlight. 
EMU28302 
Procedure 
EMU28372 
Flushing in a test tank 
1. Wash the outboard motor body using
fresh water. For further information, see
page 34.
2. Fill the fuel...

 
Maintenance 
34 
when starting or during operation. 
 
Keep hands, hair, and clothes away
from the flywheel and other rotating 
parts while the engine is running. 
7. Run the engine at a fast idle for 10–15
minutes in neutral position.
8. Just prior to turning off the engine, quick-
ly spray “Yamaha Stor-Rite Engine
Fogging Oil” (Part No. LUB-STRRT-12-
00) alternately into each carburetor or
the fogging hole of the silencer cover, if
equipped. When properly done, the en-
gine will smoke excessively...

 
Maintenance 
35 
Maintenance, replacement, or repair of
the emission control devices and sys-
tems may be performed by any marine
engine repair establishment or individual.
All warranty repairs, however, including
those to the emission control system,
must be performed by an authorized
Yamaha marine dealership. 
A service manual is available for purchase
through your Yamaha dealer for owners who
have the mechanical skills, tools, and other
equipment necessary to perform mainte-
nance not covered by...