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Yamaha OX66 250 Leaking oil/ when tilted up.

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Yamaha OX66 250 Leaking oil/ when tilted up.

Old 12-10-2018, 01:13 PM
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Default Yamaha OX66 250 Leaking oil/ when tilted up.

I have a 02 Yamaha OX66 SW series 250. It seems to be leaking oil when tilted. It seems to be coming from the attached image and leaking out of the cowling gasket... any idea?
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Old 12-10-2018, 03:12 PM
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No attached image, need description
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Old 12-10-2018, 03:26 PM
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Originally Posted by wetneck View Post
No attached image, need description
sorry I need 10 posts first...
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Old 12-10-2018, 03:32 PM
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Oil tank?
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Old 12-10-2018, 03:39 PM
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Originally Posted by 95wellcraft View Post
Oil tank?

yes the black oil cap on the small tank on the left hand side on the engine.
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Old 12-10-2018, 03:50 PM
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Turn the motors to the port when stowed, if it still leaks, get a new cap.
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Old 12-10-2018, 03:54 PM
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Originally Posted by EMC Pursuit View Post
Turn the motors to the port when stowed, if it still leaks, get a new cap.
ok. The cap does have wires attached ..?
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Old 12-10-2018, 04:41 PM
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Put a zip tie around the cap that worked for me
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Old 12-12-2018, 05:25 AM
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See image below.
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Old 12-12-2018, 05:45 AM
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Mine did it too, new cap fixed it.
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Old 12-12-2018, 05:48 AM
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You need 10 posts to put am image up.
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Old 12-12-2018, 05:49 AM
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The remote oil tank on the engine will leak especially on older models. The wires are for the float level.
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Old 12-12-2018, 06:09 AM
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Originally Posted by avalonandl View Post
The remote oil tank on the engine will leak especially on older models. The wires are for the float level.
easily replaced?
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Old 12-12-2018, 09:50 AM
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Piece of cake. Disconnect cable, remove sender. Reverse. Five minutes.
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Old 12-12-2018, 10:03 AM
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Yes, one of the easier remove/replace projects. As mentioned before, a zip tie around the cap will keep it from leaking, if only for a temporary fix..
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Old 12-12-2018, 11:01 AM
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Try tilting engine to 1 side.
.That stopped mine and I had already replaced the remote oil tank cap
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Old 12-12-2018, 11:05 AM
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Zip tie around the black oil cap should do the trick.
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Old 12-12-2018, 12:02 PM
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I just carry a bottle of Simple Green and hose it off with the washdown, tried zip ties, tried hose clamp, tried another cap/sender. Haven't tried tilting the motor to one side though
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Old 12-12-2018, 01:36 PM
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If the zip tie did not help maybe the cap is cracked.
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Old 12-12-2018, 01:52 PM
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Mine also started doing this. I cleaned the inside of the cap and outside of the oil tank connection as someone on here suggested. I did it at the end of the season so I'm not sure if it worked. I will try the zip tie also.
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