Waverunner & PWC repair notes
Diagnosis and fix documentation for Yamaha Waverunner and personal watercraft. Written from direct hands-on experience with a Yamaha VX1100 Deluxe over multiple seasons.
Guides in this section
Yamaha Waverunner Won't Start or Stalls
A VX1100 stalled and would not restart. Multiple causes were found: disconnected exhaust pipe, oil overfill, wrong battery, failed rectifier/regulator, and water in gas. Includes the full Yamaha error code list and battery and spark plug specs.
Waverunner Loses Power: Won't Go Above 35 mph
A Yamaha VX1100 sputtered and would not go above 35 mph. Full 12-step diagnostic walkthrough, the actual cause (clogged fuel injectors), a DIY cleaning method under $60, and what a shop would have charged.
Waverunner Bilge Pump Siphon Tube Fix
The bilge pump was running but not removing water. Cause was a cracked siphon tube. The pump moved air instead of water. Documents the diagnosis, the replacement tube fix, and an electric bilge pump upgrade as an alternative.