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11-10-2015, 04:47 PM | #1 |
Join Date: Oct 2015
Location: Houston Tx
Posts: 157
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Valve adjustment
So I'm trying to do the valves on my hawk I have the motor to top dead center according to the markings but the valves are not rocking at all. This is the first adjustment on the new bike. Could the valves just be so tight they don't rock?
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11-10-2015, 04:50 PM | #2 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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Rotate the crankshaft another 360 degrees, and check again. You want the camshaft positioned at TDC on the compression stroke. You might have the camshaft positioned at TDC on the exhaust stroke.
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Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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11-10-2015, 05:00 PM | #3 |
Banned
Join Date: Apr 2015
Location: Pismo Beach
Posts: 55
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How often, miles or months, is valve adjustment necessary?
Just curious how often the valves must be adjusted. Is it by mileage or months?
Thanks, PCG |
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11-10-2015, 06:20 PM | #4 |
Join Date: Oct 2015
Location: Houston Tx
Posts: 157
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I have tried both the f mark and t mark on 360 degree turns multiple times I can not get the rockers to ever be loose.
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11-10-2015, 05:04 PM | #5 |
Join Date: Mar 2008
Posts: 2,436
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[youtube]DghoWDjWbhI[/youtube][youtube]QY2iLg88dH8[/youtube][youtube]KVmO9pVFYN8[/youtube]
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11-10-2015, 08:22 PM | #6 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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In that case, you must loosen the valve tappets until you get a gap.
__________________
Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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11-10-2015, 09:15 PM | #7 |
Join Date: Oct 2015
Location: Houston Tx
Posts: 157
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Lol that is what I thought they tightened all the way down from the "factory" so to know if I'm on exhaust stroke I should turn until the pushrod moves the exhaust valve correct?
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11-10-2015, 09:24 PM | #8 |
Join Date: Jul 2008
Location: Idaho
Posts: 25,054
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Yes, that's correct. After you determine the exhaust stroke, the compression stroke will be the next full revolution of the crankshaft. When you reach the compression stroke, loosen both tappets, and set the correct valve lash.
Next, rotate the crankshaft one revolution, to the exhaust stroke. Only the exhaust valves should be tight. Then rotate the crankshaft one more revolution, to the compression stroke. Both valves should be loose. Check the valve lash once again, and adjust if necessary. If the valve lash is correct, you are finished.
__________________
Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894 |
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