Jet Pump Clean-Out Procedure - Yamaha AR240 HO Owner's Manual

JET pUmp CLEAN-OUT
pROCEdURE
WARNING
Severe injury or death may result if
you ignore any of the following:
Turn off and remove both igni-
•
tion keys, remove lanyard, and
wait for all movement to stop
before removing access port
caps.
• Never override interlocks to run
engine with hatch open.
• The impeller has sharp edges.
Be careful when reaching into
jet pump area.
If weeds or debris get caught in the in-
take or impeller, cavitation can occur,
and though the engine speed rises,
forward thrust will decrease. If this
condition is allowed to continue, pump
damage can occur and the engines
may overheat and seize. If there is any
sign that the jet intake or impeller is
clogged with weeds or debris, follow
this cleanout procedure.
1) Turn off and remove ignition keys,
remove lanyard, and wait for all
movement to stop.
2) Lift the hatch on the rear platform.
t
rouble
3) Check that the retaining cord is
securely attached to the cap and
retaining strap. Press the release
button and lift the cap up out of the
port. Set the cap where it cannot be
accidentally knocked overboard.
4) Remove any weeds or debris from
the drive shaft, impeller, pump
housing, and steering nozzle. If you
cannot remove the debris, consult
your Yamaha Boat dealer.
5) To reinstall the access port cap,
first clean off any sand or other
foreign matter from the cap or port
surfaces. Insert the cap so that its
slot faces the bow and lines up
with the projection in the access
port wall.
5-5
5
r
ecovery