2024年11月28日 · I put softer springs in my 2023 WR250F. Front-.44kg and 5.4kg rear, Race Tech. Front sags down about 1 to 1/2 inch more, set rear sag at 4 1/4 inches.

2018年10月17日 · Here are several FX maps, and my notes on how the map performed with the stock muffler. I preferred the Dirt Bike Test Map + IG in the woods, and the GYTR Hard map on the MX track and sand.

2009年9月30日 · YAMAHA YZ250F JETTING:FROM 2001-2009 (9/2009) As the original 250cc four-stroke of the modern era, the Yamaha YZ250F has the most development and refinement time of any bike of the track. Its jetting specs have evolved slowly over the last nine years (and the 2009 model isn’t all that different from the 2001 YZ250F).

2006年7月10日 · I picked this 05 yz250f up cheap. It needed a carb rebuild so I got a kit for it and replaced every seal, gasket, jet and so on including the mid body. cleaned every port or hole on the carb with compressed air, picks and a good cleaner. I fire up the bike and I’m extremely lean. What a bummer. The bike will run flawless on choke.

2010年3月25日 · green antifreeze mixed 50/50 with water will work just fine. you can buy it premixed or you can buy it straight and mix it your self. a gallon of 50/50 is about half the cost of a gallon of straight because obviously you are buying half a gallon of antifreeze and half a gallon of water. don't ever mix orange and green antifreeze they will coagulate and cause all sorts of …

2024年4月12日 · I see two different plugs: the one for the YZ250F is a colder plug (LMAR9EJ) than the 250FX (LMAR8EJ). I've had the ECU flash done to correct the plug fouling issue (which wasn't really that big of an issue with the bike - still takes a …

2020年4月27日 · Hey Everyone, I have just purchased a new 2020 YZ250f, and was looking for a recommendation on oil. I have put about 1 1/2 hours on it, getting ready for first oil change, and I am interested in what you guys think in terms of straight …

2020年11月1日 · The tuner will tell you any fault codes OBD2 is for cars...don't think it works on bikes Yamaha also sell this one which the 450 owners needed to tweak the CO level at idle on the first gen of FI bike

2016年10月14日 · Excitable, your confusing an engine/crankcase leakage test with a leak down test. Engine leakage test is done on a 2t at 8 psi with the ports and vents plugged off. You us this test to find case seam leaks, base gasket/head gasket leaks, seal leaks, and just a

2020年12月10日 · I finally thought I’d ask the forum about it, I’ve been running my yz250f for awhile with this “throttle position sensor” unplugged as that’s how I bought it off my buddy and it’s ran fine. I’m now just trying to give her some love and figured the engineers at Yamaha didn’t put it on for no reason. So just asking if anyone knows ...