39
Propulsion System
• The addition of heavy equipment like life rafts,
additional coolers, etc., will cause additional
load on the engine. Consequently, a dierent
propeller 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,
dierent a propeller may be required.
Notice:
Outboard engines can be damaged and
the engine warranty void if the boat is not
propped correctly. Always consult your
Blackndealerorauthorizedengineservice
dealer when making changes to the propel-
ler or if the boat does not run near the top
recommended RPM.
Yamaha Propeller
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