Crevalle Boats 33 CSF, Owner'S Manual

Page: 37 / 188

37
Propulsion System
The following are some other factors to con-
sider:
• You should be sure the load conditions are
those normally experienced. If the boat ran
in the required RPM range when it was new
and you have not added any additional gear or
heavy equipment and have not damaged the
propellers, there is a good chance the propel-
lers are not the problem.
• The addition of heavy equipment such as a
tower, life rafts, additional coolers, etc., will
cause additional load on the engines. Conse-
quently, different propellers may be required.
• Boats operated at high altitudes (above 2000
feet). Engines operated at high altitudes will
not be able to develop as much horsepower
as they do at or near sea level. Consequently,
different propellers may be required.
Notice:
Outboard engines can be damaged and the
warranty void if the boat is not propped
correctly. Always consult your dealer or au-
thorized engine service dealer when making
changes to the propellers or if the boat does
not run near the top recommended RPM.
Typical Yamaha Propeller