Jet Pump Clean-Out Procedure - Yamaha XR1800Z Ower's Manual

T
ROUBLESHOOTING
JET PUMP CLEAN-OUT
PROCEDURE
WARNING
SEVERE INJURY OR DEATH MAY
RESULT IF YOU IGNORE ANY OF
THE FOLLOWING:
Turn off and remove both ignition
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
intake or impeller, cavitation can occur,
and though the engine speed rises, for-
ward thrust will decrease. If this condi-
tion is allowed to continue, pump dam-
age 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.
& S P
PECIAL
2 2
3) Press the release button 1 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 hous-
ing, and steering nozzle. If you can-
not remove the debris, consult your
Yamaha Sport Boat Dealer.
5) To reinstall the access port cap, first
clean any debris from the opening in
the port. Align the slot 2 on the cap
with the tab 3 in the port, then slide
the cap down until it is seated.
6) Firmly press the T-handle 4 down
until it locks. Pull up on the handle to
ensure that the cap is locked in
place.
5-5
ROCEDURES
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3 3
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