This engine rebuild series is going to completely cover the process of diagnosing a YZ450F four stroke dirt bike engine, the teardown process, as well as the rebuilding process. In Part 1 we are going to be covering what you need to check to see if your fourstroke engine needs to be rebuilt. This includes obvious signs as well as doing some indepth testing such as a leak down test. We also go over the tools that you will need in order to efficiently complete the rebuild. And finally, we go over A few very common questions pertaining to engine rebuilds.

Time Stamps:
Overview of the series: 00:24
Leak down test: 03:23
Tool overview: 10:05
Frequently asked questions: 16:19


Part Links:
Waterproof Grease: https://thed.zone/product/maximahit...
Assembly lube: https://thed.zone/product/maximaasse...
Crankcase splitting tool: https://thed.zone/product/tuskcrankc...
Crank puller/installer tool: https://thed.zone/product/tuskcrank...
Gear Jammer: https://thed.zone/product/motionpro...
Engine Stand: https://thed.zone/product/motorsport...
Engine lock up tool: https://thed.zone/product/enginelock...
Valve spring compressor: https://thed.zone/product/valvesprin...
Blind bearing remover: https://thed.zone/product/bearingrem...