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Showing results for tags 'decompressionmechanism'.
Question- i bought a 2002 Yz250f and the bike comes with a decompression lever, since Yamaha 01-02’s were designed that way, I understand how it works and getting the pistons/compression to TDC. My question is....has anyone ever experienced or heard that you should just leave the decompression alone when kickstarting?? I bought the bike, brought it straight to a buddies house to go ride together, started it first kick WITHOUT decompressing, got home started it 1-3 kicks WITHOUT decompressing, next day started it 1-3 kicks WITHOUT Decompressing, and the rest of the week I’ve had a hell of a time trying to get it kickstarted, I’ve been bump starting it to get it running, I replaced the spark plug it was in bad condition, but I’ve been messing with the decompression lever since and I can’t get it started, my experienced neighbor comes over after I got finished riding, I explained to him my problem, he sets the Kickstarter with his hand to TDC and tells me kick it.....Starts right up first kick without decompressing....again my question really is, is the decompression steps really necessary??? -Thanks
Plagued with very loud knock from inside of the cam cover of the cylinder head following rebuild on broken gearbox basket case. Removed top cam chain guard that was not the knock cause, then cut off the entire decompression assembly and that was not the cause of the knock.......... On reassembly noticed the exhaust right front bolt had bits of helicoil on it and was stripped only leaving three bolts to hold the cam cover on. Question could the missing bolt cause the case to flex enough to make the knocking noise?
Hi all, I have a 94 SE model and due to top end oil starvation, I am stuck with a scored cam shaft, rocker arms and cam journals. I bought a running 90 DR350 trail bike for parts with the manual decompression lever. I got the parts bike on a great deal and I wanted to swap over the suspension and the brand new pumper carb it came with. I understand that the cams are different between the electric and kick start with manual decompression so my question is; can I use the cylinder head, camshaft and head cover from the 90 DR? if so I assume I would need to install the decompression lever as well and can that work with an electric start? Thanks
Hey everyone, I just adjusted the valves on my 1982 xl500r, and now, as per the clymer manual, I assume I should adjust the auto and manual decompression system. The manual isn't really detailed on it and I can't find any videos on it. If someone could just explain it here that would be great, because I can't find anything more detailed on it anywhere else. I'm confused on where the valve lever should start initially, and what exactly it means by "free play" Thanks