Rare Case Occurs on Yamaha F1zr

In general, 2-stroke motorbikes pump when the piston and handlebar parts lack lubrication. It could also be due to the carburetor setting being too economical, causing the engine to overheat excessively. However, this time there was a unique and rare case that I handled on a Yamaha Fizr motorbike. The jerking is not due to the piston and handlebars being stuck but due to the chain being loose. How come ? Watch the video to get the complete answer
#fizr
#yamahaf1zr
#twostrokes
#silabanchannel
00:00 Intro
00:11 opening
02:40 Unique case of the causes of cravings/analysis process
10:39 assembly process
14:15 engine start test/final results
16:00 conclusion
16:40 closing0 Intro
00:11 opening
02:40 Unique case of the causes of cravings/analysis process
10:39 assembly process
14:15 engine start test/final results
16:00 conclusion
16:40 closing