How To Install a Clutch Kit on a 2020 Yamaha YZ250X Dirt Bike

How to Install a Clutch Kit on a 2020 Yamaha YZ250X

Why replace the clutch on your 2020 Yamaha YZ250X?

The 2020 Yamaha YZ250X is a lightweight, 250cc offroad/competition bike that sees heavy clutch use tight woods, aggressive starts, sand or technical trail work all accelerate wear. Typical symptoms that point to a worn clutch: slipping under load, dragging or grabbing during engagement, inconsistent lever feel, hard shifting, or a higher lever free play than normal. A properly installed clutch kit restores direct throttle response, consistent power transfer and smooth shift quality so your YZ250X performs like it should in race or trail settings.

Clutch system overview what to expect on the YZ250X

The 2020 YZ250X uses a wet, multiplate cableoperated clutch. That means friction and steel plates live in oil, the lever motion is transmitted by a cable and clutch actuation components include the cover, pressure plate, springs, plates, clutch basket and inner hub. Cable stretch or binding can mimic plate wear, so check cable condition and free play before assuming a full rebuild.

Tools & supplies (basic to intermediate)

• Good workspace and motorcycle stand
• Metric socket and wrench set, ratchet and extension
• Screwdrivers, clutch holding tool or impact driver, pliers
• New clutch kit (friction plates, steels, springs, pressure plate if included)
• Fresh engine oil and oil filter (YZ250X uses wet clutch oil)
• Clean rags, small container for parts, gasket or sealant if your kit requires
• Cleaner and light inspection tools (flashlight, feeler gauge optional)

Preparation

• Warm the engine briefly to thin the oil, then place the bike on a stable stand.
• Position absorbent material under the clutch cover removing the cover allows oil to escape. On the YZ250X you can either drain the oil or remove the cover carefully to limit spillage.
• Disconnect the clutch cable at the lever and free the cable at the clutch release arm so it doesn't interfere during disassembly.
• Clean around the clutch cover to avoid contamination entering the clutch pack.

Removing the clutch

• Remove the clutch cover bolts and take off the cover. Expect some oil; have a drain pan ready.
• With the cover off, note the orientation of the clutch assembly and take a photo if helpful for reassembly.
• Loosen and remove clutch spring bolts evenly in a crisscross pattern to relieve pressure on the pressure plate.
• Remove the pressure plate and clutch springs; set springs aside in order so you can compare to new springs.
• Slide out the friction plates and steel drive plates one at a time, keeping them in order. Pay attention to any special starter or separator plates keep their sequence consistent.

Inspection checklist

• Friction plates look for glazing, uneven wear, burned surfaces or thinning. Minor surface glazing can sometimes be cleaned, but deep wear means replacement.
• Steel plates check for discoloration from overheating and check for warping on a flat surface. Discolored or warped steels reduce engagement quality.
• Clutch basket fingers inspect for notching or grooves where plates engage. Slight notching is common; severe notching will cause uneven engagement and may require basket replacement or filing by a competent shop.
• Inner hub splines confirm they are not excessively worn or damaged; play here causes jumpy engagement.
• Thrust washer & pushrod check for flatness and smooth surfaces; a worn pushrod can misalign the pressure plate.
• Clutch springs compare free length and look for corrosion or sag. Replace springs if they show visible wear or loss of tension.
• Oil condition dark, burnt oil reduces clutch life. Replace with the correct oil grade when reassembling.

Preparing new plates (wet clutch best practice)

Soak new friction plates in recommended engine oil for at least 15-30 minutes so they are saturated before first use. This reduces initial wear and helps immediate engagement behavior.

Reassembly correct order and technique

• Install plates in the same order they were removed, alternating friction plate then steel plate unless the kit specifies otherwise. Make sure each plate seats fully in the basket and onto the hub splines.
• Check that the tabs on friction plates engage the basket correctly and steels slide over the hub without binding.
• Reinstall the pressure plate and seat springs into their locations. Tighten spring bolts evenly in a crisscross pattern a little at a time until snug avoid overtightening by feel and use even progression so the plate stays parallel.
• Rotate the clutch hub by hand while tightening to ensure smooth operation and correct seating.
• Replace any gaskets or sealing material on the clutch cover and smear a little oil on mating surfaces where appropriate.

Finishing up

• Reinstall the clutch cover and bolt it in place. Expect to top up or refill the engine oil since some oil was drained or lost during disassembly.
• Reinstall the clutch cover and bolt it in place. Expect to top up or refill the engine oil since some oil was drained or lost during disassembly.
• Reconnect the clutch cable and set initial free play at the lever per typical cable feel you want a small amount of free play so the clutch fully disengages at rest. Cable stretch or binding can reproduce slipping symptoms, so inspect cable movement and lubricate if sticky.
• If lever feels inconsistent after adjustment, doublecheck spring seating and plate order; cable routing and the release arm should move smoothly without tight spots.
• Start the bike and let it idle; cycle the clutch a few times and take a short lowspeed ride to bed the plates. Recheck oil level after the test ride and top off if needed.

Performance tips and when to revisit

A properly installed clutch on a YZ250X will restore crisp throttle response and predictable engine braking. Aggressive starts, lots of clutch slipping in deep sand, or running the wrong oil accelerate wear if clutch feel degrades within a short time after replacement, revisit cable adjustment, check for basket notching or contaminated oil, and ensure springs were replaced if old. For riders who do technical woods or enduro work, periodic inspection of plate condition and spring free length between seasons keeps performance consistent.

Related Shopping Categories

Shop Clutch Kits for a 2020 Yamaha YZ250X Dirt Bike.

Shop Clutch Baskets for a 2020 Yamaha YZ250X Dirt Bike.

Shop Clutch Springs for a 2020 Yamaha YZ250X Dirt Bike.

Shop Inner Hubs and Pressure Plates for a 2020 Yamaha YZ250X Dirt Bike.

Shop Clutch Covers for a 2020 Yamaha YZ250X Dirt Bike.

Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.