boat started losing power ,pulled the seat and see water coming out the stem of what looks like a rave valve,when i look at the parts fisch cant really identify what i need, any suggestions ?
That is the water pressure regulator. It sits on top of the muffler. Is the water leaking out of one of the two hoses connected to the regulator, or out of the regulator itself?
I just replaced the one in my ski - $158 part from Parker Yamaha.
its coming out the stem at the base of it and the whole valve spins around,is there a seal or something thats blown out?
guess I mis posted this should have gone in troubleshooting, how do you delete or move a thread?
It's just unscrewed. There is a metal spigot at the base of the regulator that is threaded in both ends. The spigot screws into the regulator and then the wholething screws into the muffler. Just use teflon tape to seal the threads.
Here is some info on the Water Flow Regulator Valve:
The water flow regulator has been calibrated at the factory and should not be tampered with or modified in any way.
CAUTION: Strictly adhere to the calibration procedure or otherwise serious engine damage will occur.
If engine does not maintain RPM or the engine is experiencing poor performance, the water flow regulator valve might be out of adjustment. The normal adjustment as done at the factory is as follows: On the top of the water flow regulator valve locate the red plastic adjustment screw. Mark the location of the screw with a dab of paint for reference. Turn the screw clockwise (tighten) until the top edge of the screw is flush with the top of the black cap. Turn the screw 2 clicks counterclockwise (loosen). This is the factory spring setting. The bottom tapered screw should be screwed in just snug.
This Regulator valve plays an important part in cooling the engine. Each fitting is a special size and controls the flow of water to the different part of the engine depending on the rpm. Never mix up the fittings or you'll have problems with over heating and maybe seizure.