1990 ProV 150 speedometer not working

[rcdatadude]

I have a problem regarding my Yamaha ProV 150 speedometer. I have the yamaha digital gauges, but the readout for the speedometer quick working this weekend. It seemed to work fine in the past, but now there is no reading. Any suggestions on where to start?

 

[BaileysBoat]

Re: 1990 ProV 150 speedometer not working

The water pickup or pitot tube is probably blocked. You will see a small orifice on the leading edge of the lower unit just above the gear case. I use a small drill bit turned counter clockwise by hand to clear away blockage.

 

['96 Charger]

Re: 1990 ProV 150 speedometer not working

Same thing happened to my '96 ProV 200. Where is the pitot tube located on the lower unit?