Operation Special Boating Situations The following section covers scenarios that are considered special boating situations. When using the boat in the following situations, there are some special procedures to take into consideration in order to keep the engine, transmission, drive, and propeller in top working condition. Shallow Water Operation You may tilt the drive unit (6°-29°) to reduce the draft for shallow water A running as long as you do not ex- ceed 1000 RPM. Exceeding 1000 RPM is not neces- sary. It will only increase the boat wake and will not increase boat speed appreciably. CAUTION! Exceeding 1000 RPM with the drive unit tilted could damage drive train components.
This type of damage is not covered by warranty. Never attempt to plane the boat or exceed 1000 rpm with the drive unit in a partially tilted position. Always return to the trim range as soon as possi- ble to avoid damage to drive train. Never RUN the engine with the drive unit tilted more than 30° or the drive will be damaged. 22798 7743722 - Downloaded from www.volvopenta.com 13/05/2008 20:17:06 When operating in shallow water, be sure the water in- takes located in the lower gear unit are submerged at all times. Proceed at slow speed and lower drive unit immediately when deeper water is reached. CAUTION!
Be very careful when operating in shallow water; the intakes may pick up mud, sand, underwater vegetation, or other sub- merged debris. This may lead to overheating and engine damage. High Altitude Operation Volvo Penta EFI engines have programmed altitude compensation; however, there may be a slight per- formance loss at altitudes above 5000 feet due to low- er air density. If you are boating above 5000 feet for a short time, a lower pitch propeller will restore some of the lost performance. Long term use above altitudes of 5000 ft. may require a change in gear ratio which is not covered under the Volvo Penta Limited Warranty.
Volvo Penta carbureted engines may require mechan- ical modifications. See your Volvo Penta dealer for more information. Operating in Freezing Temperatures When freezing temperatures are forecast and the boat will be operated and left in the water, the drive unit must remain in the tilted down (submerged) position at all times to prevent water in the drive unit from freez- ing. Upon completion of engine operation, drain the engine as described in the maintenance section of this manual. 22799 VPA 7743722 English 10-2004 43