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
| Categories | Yamaha Outboard Manuals |
|---|---|
| Document Type | Boat Motor Manual Free Download. Marine Operator's Boating Guide. |
| Tags | Yamaha 2.5C |
| Model Year | 2004 |
| 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 |
(0 votes, average: 0 out of 5)