This video shows you how to do a top end rebuild on a 4 stroke Honda 400EX ATV. The first of three videos in our 400EX top end rebuild series, this video covers top end disassembly including how to pull off the entire intake assembly, and how to remove the carburetor, exhaust, header pipe, top motor mount, cylinder head, cam chain tensioner, cam gear, and cam shaft. You will also learn how to remove the cylinder from the piston and how to remove the piston.
Buy 2007 Honda TRX400EX parts: https://www.partzilla.com/parts/search/Honda/ATV/2007/TRX400EX+A/parts.html
Watch Top End Part 2: https://youtu.be/UxbV2n_svDc
Watch Top End Part 3: https://youtu.be/D-lX2oUIwSE
Use the links below to jump to a section of the top end disassembly:
- Pull off entire intake system and carburetor: (6:23)
- Remove exhaust (7:13)
- Remove header pipe (7:28)
- Remove top motor mount and pull cylinder head (7:49)
- Remove Cam Chain Tensioner (including bracket and negative cable), cam gear and cam shaft: (8:24)
- Remove cylinder from the piston (11:06)
- Remove piston (including piston pin clip and wrist pin): (11:20)
Post time: Jun-24-2017