Overriding Clutch Assy

🔧 CFMoto Overriding Clutch Assembly

📦 Part Number: 0DM0-091000

⚙️ One-Way Clutch / Starter Clutch Assembly · OEM Specification

📍 Installation Position: Engine Crankshaft Starter Gear Side / Magneto Side

✅ Precision Manufactured · One-Way Locking · Fits CFMoto 250cc/300cc Engine Series

This product is a CFMoto OEM-spec overriding clutch assembly (one-way clutch / starter clutch assembly), part number 0DM0-091000. The overriding clutch is a critical component in the engine starting system, mounted on the crankshaft starter gear side. During starting, it locks in one direction to transmit starter motor torque to the crankshaft. Once the engine starts, it overruns (freewheels) to allow the crankshaft to rotate faster than the starter motor without dragging.

Over time, the overriding clutch may experience wear, spring fatigue, roller seizure, or slipping, leading to starting noise, difficult starting, starter motor spinning without engaging, or starter gear damage. Timely replacement of a faulty overriding clutch assembly is essential to ensure reliable engine starting.

• ✅ OEM Specification: Manufactured strictly to CFMoto original technical standards; dimensions and clearances are identical to the original part.
• 🛡️ Precision Machined: Roller raceways and locking surfaces are precision ground for reliable one-way locking and smooth overrunning.
• 🔧 Direct Replacement: Directly replaces worn, slipping, or seized original overriding clutch assemblies.
• ⚡ Restores Starting Performance: Effectively resolves starting noise, starter motor freewheeling, and hard starting issues.

✅ Signs Your Overriding Clutch Needs Replacement:
• Starter motor spins but engine does not crank (clutch slipping).
• "Clicking" or grinding noise from the engine side during starting.
• Clutch fails to overrun after starting — starter motor dragged by crankshaft (noise continues after engine starts).
• Intermittent starting failure with occasional successful starts.
• Inspection reveals worn rollers or raceway indentations.
If any of these symptoms occur, replace the overriding clutch assembly promptly to prevent starter gear or starter motor damage.

✅ Installation Tips:
1. Remove the magneto side cover and clean the installation area before starting.
2. Inspect the crankshaft starter gear teeth for wear; replace if necessary.
3. Install the overriding clutch assembly onto the crankshaft end, paying attention to roller orientation (one-way locking direction must be correct).
4. Use proper tools to tighten the retaining bolt to manufacturer specified torque.
5. After installation, manually rotate the crankshaft to verify clutch operation (locks in one direction, freewheels in the other).
6. Start the engine to test for normal operation and absence of unusual noise.
Professional installation is recommended.

⚠️ Important Notice: This product is a CFMoto overriding clutch assembly, part number 0DM0-091000. Fits CFMoto 172MM series (250cc) and 178MN series (300cc) engines, as well as 250NK, 300NK, 300SR, 300SS, 300CL-X models. Minor differences may exist between production batches. If your specific model is not listed, please contact customer service with your VIN for compatibility confirmation. Images are for reference only; actual product may vary.