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  Water pickup for speedometer?

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Author Topic:   Water pickup for speedometer?
johnk posted 04-07-2002 12:44 PM ET (US)   Profile for johnk   Send Email to johnk  
Where is the water pickup for speedo on 2001 Yamaha 225SW? Speedometer stopped working when I put the boat in the water this year. Pulled the hose off the speedo to test and it's obviously clogged. Where is the water pickup on the motor? I've got the service manual and it shows a pic of the hose, etc, but it's not clear where the pickup is. It probably has some crud in it...

thanks in advance

john

lpaton posted 04-08-2002 09:23 AM ET (US)     Profile for lpaton  Send Email to lpaton     
I never managed to unblock the water pickup hose where it runs in the motor leg.Simplest solution is to transom mount an aftremarket pitot tube and run a new section of flexible tubing from it to a convenient splice spot where your hose comes out of the motor.
Laird
where2 posted 04-08-2002 12:21 PM ET (US)     Profile for where2  Send Email to where2     
It's on the leading edge of the lower unit, between the cavitation plate and the gearbox portion. It's not much bigger than the size of a standard pencil lead (1/8" or less). If you take off the hose where it attaches to the portion running to the speedo, (just below the transom bracket, on the pivoting portion of the mid-section, you might be able to blow out the lower portion with 5psi of air. I wouldn't put alot of pressure on it, it may rupture the hose leaving few options other than the transom pitot tube.
johnk posted 04-08-2002 03:22 PM ET (US)     Profile for johnk  Send Email to johnk     
Thanks guys, fixed it. You're right, it's a very small hole. Since the boat is in the water, it's virtually impossible to see it even with the motor tilted up al the way. Had to feel it with my fingernail. Cut the curve off of a small fishhook, and cleared the blockage. Hooked up my automotive MityVac to the speedometer end of the hose to suction all the crud out of the hose, let it drain, put back on, and I'm back in business. Just could not see it in the Yamaha Service Manual.


thanks again

John

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