Kdx200 bought for green laning

bladerunner · World Chat Champion Joined: 09 Sep 2006 Karma :

Bought this a few weeks ago .... eBay item number 300863306545

Any of you guys on here know much about them? Bike actually seems in good mechanical condition or a lot better than it could have been! I've mot'd it etc but was a bit shocked its flat out....and I mean flat out at 60 mph! 50mph is reving it more than is mechanically sympathetic!! I've just changed the rear 4.00 18 pirelli mt43 for a 100/100 mx knobblie as been told the trails I'm going on are rather muddy at the mo and from a bit of local riding the mt43 clogged up easily.

Gearing is 13/48 and with the new tire I'm guessing 50 is now top speed as the side profile is much lower than the mt43.

The motor seems crisp enough and has a fair amount of torque for a small stroker in the lower to mid range rpm. The kips valves can be seen working behind the LHS cover.

The lights don't work or they didnt seem to when I fitted a new tail/ brake bulb and ran the engine....however after a 20 min bit of field work I fitted ( read bodged) a battery in the tool bag for horn and lights... Checked the tail bulb again before fitting the battery and it had blown in spectacular fashion !! So I disconnected the yellow wire from the genny and used the battery to power the lights etc which worked fine so I know the light switch,brake switch and lights were wired up ok.

Headlight was a 5w bulb so I'm guessing that was wrong !

I'm also guessing that it's an ac genny and the little box bolted on top of the air box is a regulator rather than reg/rectifier unit? Any info would help here peeps!!!!

The bike has an fmf gold pipe and no air box lid and a main jet of 160 ....apart from being rather rich for the first few mm of throttle opening the rest feels clean and usable for the abuse it's about to get Wink

Is there anything I should look out for that the kdx was known to suffer from or that needs changing or worth inspecting any mods that will improve it?

This poor thing hadn't been started in 3 years before I bought it ( ran a litre of 15/1 thru it to lube the important bits before taking it for a spin) have to say for a premix bike the carb innards were spotless clean! Gearbox oil was pure white cream but does not seem to have used any coolant so changed it and keeping fingers crossed for now

Sorry for the long post but thought some of you guys might have some knowledge of these little kwaks or links to service data etc?

P.S total noob at off roading...what tires do you guys think will work best around snowdonia?
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

bladerunner · World Chat Champion Joined: 09 Sep 2006 Karma :

No one?

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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

dangerousdave · Traffic Copper Joined: 22 Apr 2011 Karma :

bladerunner · World Chat Champion Joined: 09 Sep 2006 Karma :

Cheers for the input dangerousdave! I fitted a new air filter today as the old one was aged from standing rather than filthy ( came with 2 old spare ones.....bin job!) have a new plug... Keeping it with me as spare for now as I know from experience single 2t's can kill them in less than an hours riding if the mixture is out and better safe than sorry. Nicosil bores I'm used to as used to race RGV 250's a few years ago so yes ain't cheap for a replated bore! I'll do the compression test when I can remember who the hell I lent it to 5 yrs or so ago lol.

Will take the pipe off tomorrow and have a peek at the piston for blow down and scores etc and the end can ( dep) deffo sounds like it needs a re pack as it sounds a bit ahem "crisp" at the mo! So will have a gander at the top end/kips and exhaust for the usual sludge.

Interesting article re jeffs mods plenty to think about there thanks for the link and tire advice! Kinda hope the motor holds together for the first few ride outs before pulling it down for a refresh....it's a new toy after all so not sure I'm cut out for the offroading yet! Or if I'll need to upgrade to cope with my 100kg mass lol but been to the top of the local mountain via pathways today and it seemed up for it so looking forward to some warmer weather and a fun way to spend a few days exploring the local green lanes!

Cheers for the input Thumbs Up

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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

dangerousdave · Traffic Copper Joined: 22 Apr 2011 Karma :

bladerunner · World Chat Champion Joined: 09 Sep 2006 Karma :

Yes it's been pretty bad east of Anglesey.....we however were lucky....so far!!! If your ever up this way on the kmx let me know...plenty of green laning to be done in that part of the world!
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

karl106290 · Derestricted Danger Joined: 23 Jan 2012 Karma :

ive had a kx 125 kx 250 and a kmx 250 and the gearbox oil has allways ended up creamy i dont think its anything to worry about just keep an eye on your water level
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Smile

bladerunner · World Chat Champion Joined: 09 Sep 2006 Karma :

Cheers karl. Apart from the water being lost from the expansion bottle every time I top it up the water level in the rad stays full so having done about 70 miles on it now I think it's just Water ingress with standing or the low breather tube for the gearbox. It's due it's next change now so I'll see if the gearbox oil is improving! Thumbs Up

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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

bladerunner · World Chat Champion Joined: 09 Sep 2006 Karma :

Quick up date. I've changed the gearbox oil...filled 700 ml and it's still white. Even drops a little from the breather pipe ... About a teaspoons worth after an hours use so could be burning off the water I guess. Will do another change next time out. I'm getting used to what the little kdx can do now and got to say its doing well off road! Fitted a new front sprocket as the original was shot. New air filter, grips, gear selector as the original had an inch of play fully tightened. Also new rear mudguard and light more due to fading than anything else. Mot done as well as tax so road legal....new air filter fitted, still on the original tankfull of 15:1 mix and ordered a battery powered horn and new frame protectors along with led tail light bulb. It's taken a few ride outs but things that were hard to get over originally are now a simple ride. It takes first gear from 3 mph without clutching it so might gear it up a bit for the on road bits. 5 mph clutch out off road would give me 80 mph top end which won't bother the off reading to much as it wheelies up hill off the throttle at the mo! I'll keep ya posted if I gear it up.
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's