Yamaha WaveRunner XL1200Ltd Service Manual page 100

POWR
YPVS
SERVICE POINTS
YPVS valve inspection
1. Eliminate:
Carbon deposits
(with a rounded scraper 1)
CAUTION:
Do not use a sharp instrument to avoid
damaging or scratching the surfaces.
2. Inspect:
YPVS valve assembly
Crack/damage/wear → Replace.
5-21
E