July 21st, 2022, 10:38 AM | #1 |
ninjette.org newbie
Name: Wes
Location: 1149 HAWKSCLAW RD
Join Date: Dec 2021 Motorcycle(s): 2002 Kawasaki Ninja 250r Posts: 4
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Valve problem what next?
So I was going to adjust valves and found this mess. The clip came off the valve spring and the roller rode sideways and ate up itself and the cam. Then there were also these broke pieces under valve cover. Any further guidance would be appreciated. I bought this bike and have been tinkering with it. Carbs seem to be running decent but this valve problem errr. Thanks in advance gents
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July 21st, 2022, 11:53 AM | #2 |
ninjette.org certified postwhore
Name: AKA JacRyann
Location: Mesa, AZ
Join Date: Dec 2011 Motorcycle(s): CB125T CBR250R-MC19 CBR250RR-MC22 NSR350R-MC21 VF500F CBR600RR SFV650 VFR750F R1M ST1300PA Valkyrie-F6C Posts: A lot.
MOTY - 2018, MOTM - Nov '17
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Yes, side guide for rocker is broken on one side. This allows rocker to worm its way out.
This is usually caused by using too much torque when tightening adjuster locknut. Best to use torque-wrench to tighten locknut. Should check all other rockers to make sure none of others are broken or cracked. Also be sure to use full-synthetic oil. |
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July 21st, 2022, 03:20 PM | #3 |
ninjette.org guru
Name: Anthony
Location: Vinita, Ok
Join Date: Sep 2021 Motorcycle(s): 07 Kawasaki Ninja 250 Posts: 343
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Look like the top end of that head it wasn't getting much oil the cam look like it got wipe out a bit and rocker follower to.
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July 22nd, 2022, 06:17 AM | #4 |
old git
Name: Steve
Location: Geneve Switzerland
Join Date: Mar 2009 Motorcycle(s): BMW K1300S Posts: 479
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I know it's a lot of work but I would remove the head and strip it.
Replace all damaged parts clean and grind in all valves then set up the valve clearences it's much easier with the head off. Steve
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Some mistakes are too much fun to make only once. |
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July 22nd, 2022, 09:14 AM | #5 |
ninjette.org guru
Name: Chris
Location: Bristol, UK
Join Date: Feb 2016 Motorcycle(s): ZZR250, VFR800 Posts: 478
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If that engine was running, did you remove the valve collets & spring retainer? If not you will have a loose valve dropping into the piston. Get the head off. Check for damage. Do what's required to replace/repair or buy a replacement head.
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