decompression valve how does it work? does mine work?

[aaronmach1]

1983 ytm 200k. It only has pull start and pulls really hard. ive read a little about the decompression valve but dont understand it. And why is there a cable running to the case next to the pull cord? Maybe mine isnt the right model for this? I pulled the vavle up last night and it pulls alot easier but wont start. Any help apreciated thanks! here is what i have:
http://i34.photobucket.com/albums/d105/aaronmach1/2012-11-28_17-24-39_494.jpg
and this is the cable coming from the decomp valve to the pull starter area
http://i34.photobucket.com/albums/d105/aaronmach1/2012-11-28_17-24-26_499.jpg

[kb0nly]

The way its supposed to work is you pull on the starter cord and it pulls the decomp lever on the head so its easier to get it spinning, one revolution and the decomp lever drops back down and it should fire, so holding it up it won't start because then you have no compression.

[aaronmach1]

The way its supposed to work is you pull on the starter cord and it pulls the decomp lever on the head so its easier to get it spinning, one revolution and the decomp lever drops back down and it should fire, so holding it up it won't start because then you have no compression.
thanks alot!!!! i was figuring it should be automatically done because it had the cable. So you think maybe i just need to adjust my cable? i think it had an adjuster on the cable itself.

[kb0nly]

Could just need adjustment, and lubricating the cable. Disconnect the cable from the lever up on the head, if you pull it up with the cable disconnected and let go does it drop back on its own after spinning the motor over? If so then its just the cable or adjustment. On the Honda's that have this it's usually just the cable sticking.

[aaronmach1]

Could just need adjustment, and lubricating the cable. Disconnect the cable from the lever up on the head, if you pull it up with the cable disconnected and let go does it drop back on its own after spinning the motor over? If so then its just the cable or adjustment. On the Honda's that have this it's usually just the cable sticking.
ok thanks. its tore apart right now and no oil in it. ill have to check this after the shift shaft is fixed hopefully soon. But with it hooked up i can pulle the decomp valve up then pull and pull and it wont go back down unless i move it down. ill check the cable.

[kb0nly]

Its the cable then i bet, disconnect the cable and see if the spring on the decomp lever makes it drop back down.

[Chunkers101]

I removed mine fully, But mine starts first pull everytime, so i don't get wore out starting it.

[aaronmach1]

Anyone ever have any issues with these decomp valves rattling? Tired of hearing mine. May tear it apart tonight.