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SportsBoat_F4X15.book Page 104 Friday, June 16, 2023 8:43 AM

Pre-operation checks

If there is a fire, push the nozzle of the fire ex- thrust, and possibly damaging jet pump
tinguisher through the FIRE-PORT™ and fol- parts.
low the manufacturer’s instructions to empty
the contents of the fire extinguisher into the
engine compartment.
A “clean agent” type fire extinguisher is rec-
ommended; a chemical-type fire extinguisher
may not be adequate in this application.

Access port cap check 1
Make sure that the access port caps are se-
curely installed.
To check the access port caps: 1 Jet intake
(1) Open the wet storage compartment lids.
(See page 82 for information on the wet In some cases, the engines may overheat be-
storage compartments.) cause of a lack of cooling water, and damage
(2) Make sure that the access port caps are could result. If the jet intakes are clogged,
securely installed. If they are removed or clean them. (See page 142 for information on
are not locked, securely install them. the jet intakes.) WARNING! Rotating parts
(See page 142 for information on the ac- could cause severe injury or death. Before
cess port caps.) attempting to remove weeds or debris
from the jet intakes or impeller areas; shut
off the engines, remove the main switch
key, and then remove the engine shut-off
1
cord (lanyard) from the engine shut-off
switch.

Fuel system checks
Check the fuel filler hoses and joints in the
engine compartment (port) for damage,
looseness, and signs of leaking. At least an-
1 Access port cap nually, or if a problem is suspected, check
the fuel tank and fuel filler hoses and
(3) Close the wet storage compartment lids. clamps. Have a Yamaha Boat Dealer check
the fuel tank and fuel filler hoses and
Jet intake checks clamps. WARNING! If there are signs of
Carefully check the jet intakes under the boat leaking fuel, do not operate the boat until
for weeds, debris, or anything else that might the source of the fuel leak is found and
restrict the intake of water. If the intakes are corrected. Gasoline and its vapors are
clogged, cavitation could occur, reducing jet highly flammable and explosive.

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