1987 KDX 200 questions

I have owned an 86 and an 88. They are basically the same as the 87 you are looking at. I had only a couple of things that happened on both of the bikes. The boot from the airbox to the carb intake cracked on the bottom of both machines. It is difficult to see the crack without REALLY looking. The spherical bearings in the dog bone link on the rear suspension seem to wear fairly fast. Other than that the C Models are extremely reliable if they get some TLC.

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one more thing mate, the brake drum on the rear wheel tends to flog out past it's wear limit from mud, sand etc. Once it's too worn, even new brake shoes won't stop you. It's a pain in the neck to check (you have to pull the rear wheel off and measure the ID of the drum) and I can't even remember what the service limit is. But sure as ****e you won't be able to get a new one! One of the reasons I went to a newer model.

Cheers,
Andrew

I bought an '86 a little over 2 years ago. Still has all the factory stickers! So it was very low mileage. I've probably ridden it more in 2 years than it's previous 17 years. Anyway, the bike is everything great that has ever been said about KDXs. I have done the following maintenance/repairs :
Rear axle bearings went out during a ride. Replaced.
Replaced fuel shut-off.
I've greased where there are fittings. But had to disassemble and grease the dog bone as it wouldn't accept the grease and was pretty noisy.
Replaced one fork seal and the dust boots. Still had original fork oil I think!
New batteries in the timer/odometer which still works.
And the usual chain, roller, slider, sprocket stuff.
Otherwise she is indestructible and goes anywhere the new expensive bikes go!
Happy Trails!
David