Hey, after a complete rebuild, following your instructions word for word. I went to start it up, and an extremely loud knocking noise came about and it wouldn't start. I believe my timing was off and my chain was stuck somehow on the teeth deep down in there.
Hey thank you for this enriching video, my question is about the camshaft, why is there any decompression valvle, as per my understanding all the 400 CC motors are equipped with this cam that help engine start and maintain the runing in low rpm
What do I do if the cylinder where the piston is that will not come off I remove all of the bolts, and for some reason thought this would slide right off, but it will not at all???
15 foot pounds then add 33 pound that consider 48 foot pound? Manual it said 33 foot pound that it. I wasn’t sure you mean 15foot pound then add 18 foot pound equal as 33 foot pound of torque?
Entirely depends on the motor, engine wear, and how well the owner takes care of the machine...or abuses it. The bottom end of a motor typically has longer service intervals compared to the top end. Theres a lot of factors there.
What rebuild kit did you use for this build? I saw the review you guys did for the QA kit and you said you used it on a build video I was wondering if it was this one
The first link in the description will take you to all the parts and tools used in this video. Or you can check out the K & L Cam Chain Tensioner Tool here: www.rockymountainatvmc.com/parts/k-%26-l-auto-cam-chain-tensioner-tool-p
Anyone interested in trading a 400ex or other sport quad for a 2011 Yamaha Grizzly 4x4 IRS that's like brand new? Meticulously maintained, just want a sport quad to build. will send pics.
