Yamaha WaveRunner XL800 2001 Owner's/Operator's Manual page 74

3. Gradually open the throttle to 3/4 or less.
4. Continue operation at 3/4 throttle or less
until the first tankful of fuel has been
used.
5. Fill the tank with straight gasoline, and
then proceed with normal operation.
CAUTION:
Failure to follow the engine break-in pro-
cedure properly can result in severe
damage to the engine.
3-15
E