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  Yamaha speedo clogged, how do I fix?

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Author Topic:   Yamaha speedo clogged, how do I fix?
ewalsh posted 05-22-2002 11:12 AM ET (US)   Profile for ewalsh   Send Email to ewalsh  
Hi all,

I have a 89 Yamaha 200 and the pickup area from the water tube is clogged. Does anyone know where the pickup area is on the motor so I can clear the debris?

Thank you!

Ed

jimithing posted 05-22-2002 11:41 AM ET (US)     Profile for jimithing  Send Email to jimithing     
ewalsh

just had this done by a dealer on my 93 225 Yamahammer. The inlet tube is on the front of the leading edge of the lower unit. Not sure if you can clean it completely out from that side or if you need to take the lower unit off and attack it from the inside as well. Mine was very clogged but now works like new...glad it wasnt the guage. I would check with a dealer too to see exactly how they go about it....an air hose would be helpful too in your efforts I assume.

lpaton posted 05-22-2002 12:13 PM ET (US)     Profile for lpaton  Send Email to lpaton     
Install a transom mount pitot tube and new tubing. Cheaper than removing bottom end. Mine works fine now. Tried everything to unclog from exterior without luck.
Laird
Whalerdan posted 05-22-2002 12:20 PM ET (US)     Profile for Whalerdan  Send Email to Whalerdan     
IMHO - I'd rather take the entire outboard apart than drill holes that weren't needed in the transom. If you have to, the lower unit is not that bad to drop. Don't drill holes!
where2 posted 05-22-2002 12:26 PM ET (US)     Profile for where2  Send Email to where2     
After disconnecting the hose joint where the engine hose connects to the main hose leading to the speedo itself (joint is about 5" above the cavitation plate), use a fine drill bit to pull out the crud jammed in the hole on the front of the gearcase (bullet shaped portion). Don't use the drill motor, just use the bit in your hand. Once that is clear, try using increasingly more forceful pressures of compressed air until the blockage is cleared. Then reconnect the hoses together above the cavitation plate.

My dad has noticed that some things are harder to clear than others. The 4x4 that broke off part of his cavitation plate did a good job of plugging the speedo orfice.

ewalsh posted 05-22-2002 01:04 PM ET (US)     Profile for ewalsh  Send Email to ewalsh     
Thanks guys, I'll give it a try tonight!

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