Impeller Replacement - Yamaha T9.9 EXRX

[BodegaDave]

Can anyone give me a brief description of the procedure for replacing the water pump impeller on my 1999 Yamaha T9.9? Also, when ordering the parts, do I need to order the complete waterpump repair kit or can I just get away with the impeller alone? Impeller has not been replaced since I bought motor new in 2000.

I have done the impellers on late 70's Evinrude/Johnson 9.9's so I feel I should be able to do my Yamaha if the procedure is similar.

[boats.net]

You are better off getting a service manual but you remove the lower unit then you can service the water pump, you wont know what parts are needed until you get it apart.

[Ken]

Dave,
Do what boats.net mechanic says and get yourself a Yamaha shop manual - go to www.yamahapubs.com and they will deliver to your door. Go to boats.net for your water pump kit - good service and parts at good prices.
Be sure and use a quality thread sealer on bolt threads where indicated by the manual - I use Permatex 14A with Teflon. Also, follow torque specs - best to have a 3/8 drive quality torque wrench.
While you have the prop off, inspect the lower unit seal for fishing line and/or leakage around the seal.
Good luck,
Ken K

[BodegaDave]

Thanks for the replies

I bought a used Yamaha service manual on e-Bay for $25 so will wait until I get it to order parts.