Maintenance & Technical > KX500 Original

KX500 CHAIN SPROCKET COMBOS

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98kaw5oo:
i noticed my front sprocket countershaft seal leaking a little bit and knew it when i bought the bike and the guy told me dirt gets in there and all you need to do is replace the seal,so i took the seal out and am going to pick a new one up tomorrow at the local shop that has 1 in stock.the spacer looked fine.i  noticed that the chain is rubbing against the engine case,it isnt damaged yet but who knows how long,it does have grooves in the case.i have a jt stock 14" size on it,i have a protector plate that goes in front of the chain for it wont hit the case in that spot but nothing on the inside against the case where you can see the chain rubbing and dont see where you could get a protector in there.im afraid if i dont do something now im going to be looking for a left side engine case,any suggestions?

Hillclimb#42:
Get a hevay duty chain press. Its like 30 bucks and works for many chains. You can pick up chain and sprocket combos with a good o-ring chain for bout 100 bucks. Really breking the chain is simple. The press just pushes out the pins in the link you want to remove. With no press you can grind rivots and drive the pins with a punch. Press is way worth it. Actually you may want to be ready for gear changing in the field. That press is real nice, when you want to throw a thirteen on for some serious goat trails.
  Case rubbing? I've heard other guys having that problem, but I think it must be a worn spacer, to let you get too close to case. Could it be mud, twigs and debris winding around it at 10,000 rpm's? Make sure the shaft is tight. Maybe a Renthal or other make of sprocket would be milled different. On mine it is hard to get to the groove for the clip. There shouldn't be any extra room for slop. Could also be the master link... it sometimes has bulging rivots on backside.

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