Timing chain replacement - Page 2 - Yamaha Raptor Forum
 

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Old 04-19-2011, 05:02 PM   #11 (permalink)
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is this to much slack?


I touched my finger here and the chain tighten up.
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Old 04-19-2011, 06:09 PM   #12 (permalink)
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Remove the center bolt and spring from the tensioner, then remove the tensioner body (you must remove the center bolt first or the spring will push the plunger out when you remove the body).

If the tensioner's plunger is out to the last two or three clicks on the pawl, the chain is too stretched out and needs replacement.

If there are more than a few clicks left on the pawl, the tensioner will still be able to properly tighten the chain... replacement at this point is up to you.

Your initial post stated that the chain was stretched out... how did you determine this?
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Old 04-19-2011, 06:18 PM   #13 (permalink)
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Quote:
Originally Posted by QuadManiac View Post
Remove the center bolt and spring from the tensioner, then remove the tensioner body (you must remove the center bolt first or the spring will push the plunger out when you remove the body).

If the tensioner's plunger is out to the last two or three clicks on the pawl, the chain is too stretched out and needs replacement.

If there are more than a few clicks left on the pawl, the tensioner will still be able to properly tighten the chain... replacement at this point is up to you.

Your initial post stated that the chain was stretched out... how did you determine this?
Being an 03, Id replace it regardless...you already removed the flywheel which is the hardest part. Now just remove the top motor mount, tensioner, valve cover and swap it out.

I did the same on my 04 when I got it last yr...just good insurance imo
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Old 04-20-2011, 07:13 AM   #14 (permalink)
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I just noticed the chain had some slack there, I will not know if that is ok or not, I was just asking since someone started this post. I will check the clicks tonight.
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Old 04-20-2011, 04:31 PM   #15 (permalink)
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I checked mine by pulling the chain tensioner (removed center bolt first) mine was all the extended, and there is a screw plug at the top of the valve cover when that is removed you can see the top of the chain on the gear and mine was loose as a goose, was very noisy when riding. Just got back from Magic with my new chain, waiting on the gaskets to come in before i break open the rest of the engine
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Old 04-24-2011, 08:31 PM   #16 (permalink)
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Working on it now and im confused. Now that I pulled the flywheel off, how do I know if it stayed TDC? Is there anyway to check that now that the flywheel is off?
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Old 04-24-2011, 09:52 PM   #17 (permalink)
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get the chain on, put ur one way back on and button up the side...then turn your engine till your at TDC...put the cam in with the lobes facing down...put the gear back on the cam. The repair manual walks you through this, btw
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Old 04-24-2011, 10:29 PM   #18 (permalink)
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Quote:
Originally Posted by eddiefromcali View Post
get the chain on, put ur one way back on and button up the side...then turn your engine till your at TDC...put the cam in with the lobes facing down...put the gear back on the cam. The repair manual walks you through this, btw
Right on.......
With the crank at TDC, make sure you align the three timing marks on the cam gear so as the two lower are lined up with the upper head surface and the chain is tight on the front side.............
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Old 04-25-2011, 12:41 AM   #19 (permalink)
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I must have a differnt manual, i downloaded mine on the internet and i does not show how to replace the timing chain anywhere. It shows nothing about timing marks on the cam, I put the chain on the bottom spocket first then over the cam sproket with out pulling the sproket off the cam. And thats as far as i got, I noticed a arrow on the case behind the oneway and was hoping that is TDC for the crank.... I am going to post pics tomorrow the new chain on the cam spocket and the lower to see if its correct, I appreciate all the help.........
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Old 04-25-2011, 01:08 AM   #20 (permalink)
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the manual doesnt tell you everything you have to do in one single section. But do like we said...put the cover back on...that way you can see the line on the crank line up with the notch on the cover. Then go to page 5-22 in the yamaha service manual.

Last edited by eddiefromcali; 04-25-2011 at 01:12 AM.
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