Suzuki DF150 Owner's Manual page 48

NOTICE
Severe engine damage can occur in as lit-
tle as 15 seconds if the engine is started
without supplying water to the cooling
system.
Never start the motor without supplying
water to the cooling system.
1. Install the flushing attachment 1 so that the
water intake holes are covered by the rubber
cups on the attachment.
2. Connect a garden hose to the flushing
attachment and turn on the water to obtain
enough flow so that plenty of excess water is
flowing out from around the rubber cups on
the attachment.
3. Place the remote control handle in the
"NEUTRAL" position with the propeller
removed and start the motor. As soon as the
engine starts, water should spray out of the
pilot water hole 2, indicating proper water
pump operation. If no water spray is evident,
stop the motor immediately and consult your
dealer.
46
4. Allow the engine to run only at idle speed
while flushing. Readjust the water flow, if
necessary, so that there is still plenty of
excess water flowing out from around the
rubber cups.
5. Allow the water to continue circulating for a
few minutes.
6. Stop the motor, then turn off the water.
7. Remove the flushing attachment from the
water intake hole.
8. Clean the motor surface and apply a coat of
automotive wax on the external finish of the
motor.