2025年1月31日 · Hello Sports Fans, WR250F and YZ250FX These are the two bikes I've narrowed it down to. I'm wondering if you can tell me the practical difference between them. …

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 …

2024年10月29日 · 2019 yz250f diagnostics code 22. By Pavel Vladimirov, October 29, 2024 in WR250F/YZ250F/YZ250FX. Share

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 …

2018年6月22日 · Hi all, I purchased a 2001 yz250f for my son. Previous owner put a new carb on it but it's a Chinese Keihin copy. Needless to say, it runs like crap. I've decided to not be …

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 …

2010年7月18日 · Stage 1 are better for low-mid and stage 2 are mid-top. The gains aren't necessarily offset by a loss at the other end, but with the HUGE increase in low-mid of the …

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 …

2021年2月1日 · Going by your forum profile name and posting history, this is on a 2006 Yamaha YZ250F, correct? 'assuming' will get you making expensive mistakes, stock OEM intake …

2024年12月10日 · i have a 21’ Yz250f with 45 hours on it. one day i start my bike like always and let it warm up while i grab my helmet. After a minute or so it dies out. After wards it cranks all …