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Chain Slack Measurement

7071 Views 6 Replies 6 Participants Last post by  lexluther
Greetings to All!!
It's been a while since I posted here. I've been enjoying my '04 Ninja 250. I've been doing ALL of the maintenance mysefl (valve adjustment/
carb sync/ oil change). Today I decided to check and adjust my chain.
It looked like there was an excessive amount of slack in the chain, so I followed the procedure and made the chain tighter. Now, I'm wondering if i'm measuring properly.
The owner's manual shows where to measure, and says that a slack of 1.4 to 1.6 inches is acceptable. It also shows a picture of a chain with a parallel line drawn in above the chain and another parallel line drawn in below the chain (which represents the measurement window??). My question:
When pushing up/down on my chain, should it ALL remain within this "window"
(top of chain not going above/bottom of chain not going below), or when pushing up/down on the chain, should the bottom of the chain not go above the top line/ top of the chain not go below the bottom line?
Sorry if this seems confusing!
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How do you adjust the slack out of the timing chain?.. my '99 has a valve or chain noise, and more than likely needs adjusting. It has 10,000 miles and I am unsure of the service of the bike.
Ninja 250 timing chain adjust

Is my timing chain self adjusting or will I have to adjust it myself?.. I have adjusted Bayou wheelers, and installed also... is the process similar? My engine runs like a top, but is noisy, doesnt sound much like a crotch rocket. aly help would be appreciated.
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