Clogged water outlet on Yamaha 250

[cpowers121]

How do you unclog the system that attaches to the small water outlet on a 250? I hooked up a garden hose with a small barb end attached to the rubber tube attached to the oulet. I get a small trickle of water from the lower unit. There is a lot of back pressure from the clog. Should I try compressed air?

[robert graham]

Are you talking about the motor cooling tell-tale on the outside of the cowling, or maybe the speedometer pitot and rubber hose that runs up inside the motor leg?

[cpowers121]

The motor cooling tell tale. It is clogged further into the system than the initial small hose

[robert graham]

Remove hose from fitting on cylinder head and probe with wire...may have a piece of sand, rust, etc. stuck in there...Good Luck!

[rodbolt17]

dunno.
without a model number I have no clue as of the at least 4 different versions of a 250 hp yamaha that has been built since about 1990.