Question about 2005 Yamaha WR 450 F

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Engine oil How much engine oil do you put in a yamaha wr 450 f?

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They take just under 1ltr of oil. you can check the level is correct by running the engine till its warm and pulling out the dipstick located near the head stock on the frame. If the level is low then add more oil, be careful not to overfill as the later model WR's expel excess oil into the air box, this can make a mess of your air filter.

Posted on Nov 13, 2008

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Since you are asking this you do not have a manual or been able to locate the stamping on the outer engine(clutch)cover. I would call your selling dealer and ask the service department shop foreman. There may be a service bulletin or trick to get all the oil out of the engine/frame(if they still run through it like the 426 did) and the oil strainer as well as the oil filter. If you are wanting to just top it off, you might as well change it. It is a race bike intended for very frequent oil changes to insure the clutch and engine/valve train are adequately lubricated. If memory serves me correctly, you are to check the oil after running it for a moment. Call the service department. If they wont talk to you then you either did not buy your bike from them or you should buy your next one somewhere else.Since I take it you bought it used or you would have been instructed on all this as well as supplied a manual, I would buy a manual. I know all this because until 2003 my job was delivering units to new customers and explaining in specific detail how to start/operate/ and maintain the specific machine purchased. Unfortunately not all dealers employ someone to do this.

Posted on Nov 10, 2008

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1 Answer

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It uses the same oil, make sure it is motorcycle oil and change it often

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1 Answer

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The cylinder is in the front of the bike and on a down hill the oil in the crank case could be pushing past the ring. Yes, it could be an over full situation. Only run the recomended amount of oil. You can actually rob yourself of power and do damage by over filling. I've already seen a guy blow the soft plugs right out of his Yamaha by over filling the oil. Also, be careful when changing your air filter. It can be very easy to drop dirt inside and that will definately score your cylinder walls and cause permanent smoke. It is most likely exactly what you think it is. Good Luck.

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1 Answer

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1 Answer

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I have a 2005 YZF 450. Can I put on a electric


I think that the WR version has electric start, but it may require that the engine cases be changed, pricey!!! Not to mention wiring, battery, and on.

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