General information
damage the motor. Engine speed depends on
the propeller size and boat load. If engine
speed is too high or too low for good engine
performance, this will have an adverse effect
on the engine.
Yamaha outboard motors are fitted with pro-
pellers chosen to perform well over a range of
applications, but there may be uses where a
propeller with a different pitch would be more
appropriate. For a greater operating load, a
smaller-pitch propeller is more suitable as it
enables the correct engine speed to be main-
tained. Conversely, a larger-pitch propeller is
more suitable for a smaller operating load.
Yamaha dealers stock a range of propellers,
and can advise you and install a propeller on
your outboard that is best suited to your appli-
cation.
ZMU01710
EMU25700
ECM01060
CAUTION:
Battery requirement
Do not use a battery that does not meet the
specified capacity. If a battery which does
not meet specifications is used, the elec-
tric system could perform poorly or be
overloaded, causing electric system dam-
age.
For electric start models, choose a battery
which meets the following specifications.
x
-
2 3
EMU25711
Battery specifications
1
Minimum cold cranking amps
(CCA/SAE):
512.0
Minimum marine cranking amps
(MCA/ABYC):
675.0
Minimum reserve capacity (RC/SAE):
A
ZMU04607
1.
2.
3.
Propeller diameter in inches
Propeller pitch in inches
Type of propeller (propeller mark)
A
182
minutes
NOTE:
NOTE:
Select a propeller which will allow the engine
The engine cannot be started if battery volt- to reach the middle or upper half of the oper-
age is too low.
ating range at full throttle with the maximum
boat load. If operating conditions such as light
boat loads then allow the engine r/min to rise
above the maximum recommended range, re-
duce the throttle setting to maintain the en-
gine in the proper operating range.
EMU25742
Propeller selection
The performance of your outboard motor will
be critically affected by your choice of propel-
ler, as an incorrect choice could adversely af-
fect performance and could also seriously
10
| Categories | Yamaha Outboard Manuals |
|---|---|
| Document Type | Boat Motor Manual Free Download. Marine Operator's Boating Guide. |
| Tags | Yamaha F250, Yamaha LF250 |
| Model Year | 2007 |
| Download File |
|
| Language | English |
| Product Brand | Yamaha Motor. Yamaha Motor Corporation, USA - Support Customer Relations for US: 1-800-962-7926
Yamaha Boats: 1-800-962-7926 Yamaha Outboard Customer Relations: 1-866-894-1626 , Yamaha Outboard |
| Document File Type | |
| Publisher | yamaha-motor.com |
| Wikipedia's Page | Yamaha Motor Company |
| Copyright | Attribution Non-commercial |
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