Benelli BN 125 - TNT 125 - Engine FULL TEARDOWN

In this simple teardown video, I disassemble the full Engine of the Benelli BN/TNT 125 engine, focusing on a full Engine teardown. Watch as I strip it down step by step. This engine is shared with the Benelli TNT 125 (aka Tornado Naked T 125), so the info applies there too—perfect for owners or mechanics working on these 125cc singles. Whether you're troubleshooting a no-start or just curious about the internals of these Qianjiang-built powerplants, this guide should give you a rough overview of what to do. There's more videos based on this engine on the Channel . Tools used 8mm spanner 7mm 1/4 inch 8mm 3/8th 10mm 3/8th 17mm 3/8th 3/8th extension JIS screw driver bit Small flat head Grips Bearing Puller - For Spark plug insert housing 3/8th Impact Gun Cir-clip Pliers Rubber Mallet (Note: This is a teardown-only video—no reassembly or inspection shown) If you found this helpful, like, subscribe, and hit the bell for more bike teardowns and repairs. Drop a comment if you have questions or suggestions for the next video. #BenelliBN125 #EngineTeardown #MotorcycleMaintenance #CylinderHead #BenelliTNT125 #125ccBike Timestamps: 0.40 Rocker Cover Removal 2.00 Cam Chain Tensioner Removal 5.10 Rocker Removal 7:20 Cam Disassembly 7:10 Cylinder & Piston Breakdown 8.52 Spark Plug Inner Housing Removal 10:30 Cylinder/ Cylinder Head Removal 12.15 Generator Casing Removal 13.30 Flywheel Removal 16.00 Generator/Stator/Magneto Removal 17.30 Clutch Side Csing Removal 20.20 Clutch Removal 24.15 Crank Case Splitting- Be careful using a mallet if your crank is healthy as you could knock it out of true/Balanced. The Gearbox was toast ass the output shaft bearing had failed. use a puller tool