How do you remove the clutch nut out of a yz250f

Check the diagram below to be sure all parts are present. The nut should be tightened to 43 foot pounds torque. Be sure the lock washer tab holds the nut in place.

Disconnect the battery. Drain the primary oil and remove the outer primary cover. Remove the four bolts that hold the clutch spring in. Remove the clutch spring and pressure plate. Then, you can remove the friction and steel plates. If you want to remove the entire clutch assembly, you'll have to remove the nut from the transmission mainshaft and remove the sprocket shaft nut. The mainshaft nut that holds the clutch assembly on has LEFT-HANDED THREADS. Once you get the nut off, you'll need a clutch puller to get the clutch assembly off the tapered transmission mainshaft. Get one of the pullers that screw onto the mainshaft and you rap it with a hammer. You do not have to disassemble the clutch assembly completely to remove it from the mainshaft. You can take it off as a unit by removing the snap ring in the center and removing the adjuster plate. Remove the sprocket shaft nut, the chain adjuster nut, and the mainshaft nut and remove the engine sprocket, primary chain and clutch assembly all together.

Good Luck
steve

Hello,

Your clutch is maybe malfunctionning.
Check if your clutch cable is tight enough.

Take the water pump cover off, not the entire clutch cover. The water pump gear is driven by the primary drive gear on the crankshaft so you can put the bike in gear, stand on the brake and loosen the nut. I believe the impeller may be reverse threads. I'm not 100% positive of that.
You can also use a 3/8" air impact wrench to remove it.