Question about 2004 Yamaha YZ 250 F
Checking the engine oil couldn't be any easier. On the lower left side of the engine, by the shift lever, is a round sight glass. With the bike held straight up, off the side stand, the oil should be somewhere near the center of the glass. Above the sight glass, also on the left side of the engine, is where you pour oil into the engine. On the bottom of the engine is a drain plug. I change my oil about every three months - or more depending on how much I ride. Use any high quality 10W-40 or 20W-50 (depending on the climate where you live) motor oil.
And yes; use straight (premium) fuel in the tank. The other thing that you will need to have done, perhaps every 50~100 hours of riding is a valve adjustment. For that I suggest you either buy a shop manual or take it to the dealer. Otherwise, there's not much else to do that is all that different from your previous bikes; oil and adjust the chain, tighten the spokes, clean the air filter, ride, etc.
Posted on Nov 14, 2009
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Posted on Jan 02, 2017
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