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Does the clutch work fine in the forward gears? If so, then I wouldn't think it is a clutch adjustment issue. Does it just "drag" in reverse, or does it go into full-on backup boogie?

Found something I couldn't resist. 1992 Yamaha WR200RD. It's kinda parallel to a KDX. A one year production (in the US at least) bike, a real oddball for sure. Based on a YZ125 with USD forks, a Blaster based bottom end/water cooled top, electric power valve (yep...) and it's own set of...

:tup: Droolworthy :iagree: !!!

Park brake switch, #24. It hooked to somewhere at some time: http://www.partforyamaha.com/pages/OemParts?aribrand=YAM#/Yamaha/WARRIOR_-_YFM350XD_-_1992/HANDLE_SWITCH-LEVER/YFM350XD_%281992_ALL_TERRAIN_VEHICLE%29/HANDLE_SWITCH-LEVER_%28YFM350XD_-_1992%29 . Oil pump should be a straightforward...

You were ready 2 hours ago. If it was gonna pop, it woulda by now. The 3 keys for longevity are oil changes, oil changes, oil changes... Let 'er rip. :tup:

My Warrior has found its way to a new home. I passed on the airhead KDX trade, but it's almost too nice to leave. It went to a good home that I visit often while at work. The owner's pretty picky, and I'm sure it wont get thrashed. :tup: I'll be on the lookout for another, after I get back up...

Careful not to break it off in any of the passages. Don't go too far into the accel pump passage (it runs through the bottom of the fuel bowl) or you'll be hatin' life. My carb had zero green/yellow/white pond scum in it, yet somehow both passages got funk in them from sitting. Good luck.

X2 on the lean. Gotta run a small wire through the ENTIRE accel pump circuit, remove the pilot jet and do the same too. Remove the mixture screw and clean the pilot circuit in the carb body while it's out. Must be spotless inside the passages. Just hosing it out with a can of cleaner won't do...

It's the unburned fuel that collects in the pipe from the cranking, catching a spark and lighting off. Probably a timing issue as 01 said. Does it have good compression (bent valve)? Plugged pilot jet or accelerator pump circuit in the carb? Bad spark plug, wire, cap or coil?

Sure is a small world, eh?? :) I lived in the South about 20 years ago. Big dummy me moved back... Yup, that's the KDX I'm really after, Gnarly pipe and all. Had a stock '90 long ago and loved it. Suited my needs just fine.

It's still in the very, very rough stages. Entire drivetrain is from one of those Chinese folding scooters. Dad whipped up the tie rod steering with small block Ford valvespring suspension up front and copper pipe dual exhaust. It still needs wheelie bars, maybe a fake 4 link, a cooler fuel...

Read this Maverick junkyard mutt article for some inspiration: http://www.mustangandfords.com/techarticles/engine/mdmp_1004_maverick_four_cylinder_engine_buildup/index.html

Nice find. I used a YB12AA (I think) from Wally World. Had to shim it up with a little bit of foam in the well to get the terminals up above the ledge, but it works. I'll be needing one of those gel cells when my gas powered, electric start, disc brake equipped Radio Flyer wagon project is...

LOL!!:haha: Me too. Which KDX do you have? I'm working on a trade for a nice '87. I really want a '90-newer, but this deal may be too good to pass up.

Never saw that thing before. It's either a Knutsen Valve Tube-u-lator or a piece from a Mr. Fusion... Or maybe a wastegate tuner?

I dunno man. That's a painful read. I can't figure out what parts he put in new, and what parts are used. But I'll try. Best advice to 38 would be to be sure you assembled the clutch in EXACTLY the way it shows, with all of the parts shown in an exploded diagram like this one...

:ohno: Nope. Says so in Snopes.

Buy the proper, complete, top end kit. Period. There are o-rings and other shizz in there too. You can get away with reusing solid copper head gaskets (ie. on a 2 stroke) but why risk it on anything else?

Need a rocker shaft puller, or need to make one. Will need to compress the valve springs to get the spring locks/retainers out first though. If it just kissed the carbon on the piston, you may be ok with a new valve. Check for bent valve by pouring some liquid (soapy water, WD40, etc.) in the...

Tappet, as in the rocker arm itself broke in half? Check the cam lobes and pads on the rockers for evidence of overheating (blued or brown colored metal). May have a top end lubrication problem that might cause the rocker shaft to seize, or valve to seize in the guide. My Warrior did, and was...