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How to Adjust Valve Clearance with Shims on Yamaha YZ250F

I rebuilt the entire engine on my Yamaha YZ 250F and put it back in the frame without checking the valve clearances, today I measure the clearances between the camshafts and the valve lifters It’s regular maintenance on a 4 stroke motocross, so it should help if you want to check and set your valve clearances 👨🏻‍🔧 The symptoms you may already know: your engine becomes harder to start (or the bike doesn’t start at all), or it pops a lot when cutting throttle… then it’s possible your valve clearances became too tight overtime A clearance too tight - or even at 0 - means that when parts dilate with heat, you have the possibility of having a valve that doesn’t close or seal anymore So let’s take the torque wrench with the feeler gauges and measure the play between camshafts lobes and valve lifters ! 🔧 Join me in my projects: http://bit.ly/2Wd2L5Y Live updates of the build on Instagram:   / tristandurandbuilds   LINKS OF PARTS AND TOOLS USED IN THIS VIDEO: Stainless Steel Feeler Gauges - Metric and Imperial: https://amzn.to/3hA71p2 Digital Caliper - Imperial and Metric: https://amzn.to/3yDlFD5 Hot Cams 7.48mm Shim Kit - 1.20 to 3.50mm in 0.05mm increments: https://amzn.to/3wkMH06 Digital Torque Wrench from 4 to 37 ft-lb: https://amzn.to/3jUlv69 Hi I'm Tristan! I live in New York and when I'm not working on my fitness clothing line (https://yoked.net) I DIY with intensity 😅 For now, I restore wrecked, neglected or simply damaged motorcycles. So I disassemble, weld, machine and fix those bikes so they can go back on the road! Join me in my projects: http://bit.ly/2Wd2L5Y Live updates of my builds on Instagram:   / tristandurandbuilds   If you have any questions write them in the comments and I'll make sure to help 👍 Thanks for watching! #valveshims #motocrossmaintenance #valveclearance