2004 Yamaha Outboard F2.5C Boat Motor Owners Manual

E
EMU01298
Mounting Height
To run  your boat  at optimum  efficiency, the
water-resistance (drag) of  the boat and out-
board motor must be made as little as possi-
ble.  The  mounting-height  of  the  outboard
motor greatly affects the water-resistance.  If
the  mounting-height  is too  high,  cavitation
tends to occur, thus reducing the propulsion;
and  if  the   propeller  tips  cut   the  air,  the
engine speed will rise abnormally and cause
the  engine  to   overheat.  If  the   mounting-
height  is too  low,  the  water-resistance will
increase  and  thereby   reduce  engine  effi-
ciency.  Mount the  engine  so that  the  anti-
cavitation plate is between the bottom of the
boat and a level 25 mm (1 in.) below it.
NOTE:
@
The optimum mounting  height of the out-
board motor is affected by the  boat/motor
combination  and  the  desired   use.  Test
runs  at different  heights can  help  deter-
mine the optimum mounting height.
q
q  Refer  to  the  section  TRIMMING  OUT-
BOARD MOTOR”  for instructions  on set-
ting the trim angle of the outboard.
@
3-3
Product Specification
CategoriesYamaha Outboard Manuals
Document TypeBoat Motor Manual Free Download. Marine Operator's Boating Guide.
Tags
Model Year2004
Download File
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- 95 pages
LanguageEnglish
Product BrandYamaha 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 TypePDF
Publisheryamaha-motor.com
Wikipedia's PageYamaha Motor Company
CopyrightAttribution Non-commercial
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