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Old 09-19-2012, 07:33 PM
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Default hi exhaust valve question

i have a cr 250 2001. i was told on on exhaust linkage the spring cant be adjusted . it has to replaced. the spring has to have some play on pinon arm according to manual.if to tight it could make the valves not open and close i want to know your views on this matter.

---------- Post added at 05:33 PM ---------- Previous post was at 03:57 PM ----------

hi would like help . on exhaust valve keep it on two wheels
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Old 09-20-2012, 02:21 PM
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dose the spring on exhaustvalve leaver need to be replaced or can it be adjusted. the dealer says no replace it.because it its real tight on pinon . have aice day would like your views
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Old 09-20-2012, 02:34 PM
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Ok, first off I am not real sharp on these exhaust valves. Look at drawing link below. It looks like part # 11 has to ne clocked correctly where it engages the goveror or the timing would be off. That would suggest that this clocking could also effect the placement of the valve when it is closed.
Look it over and see if that makes any sence.



2001 Honda CR250R Parts, 2001 Honda CR250R OEM Parts - BikeBandit.com

Paw Paw
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Old 09-20-2012, 03:12 PM
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I have always adjusted with a slight preload...seems to eliminate any rattle at low rpm. Loosen the allen pinch bolt and with the wrench installed, rotate the arm back and tighten. JMO
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Old 09-20-2012, 03:52 PM
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makes sense paw paw .but im talking about the spring preload part 16 .if it can be adjusted or buy a new one. shop says no buy a new one . thanks for in put
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Old 09-20-2012, 05:02 PM
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Dogger did a real nice piece on this. You have to scroll down a bit


Engine Build HPP Valve Honda CR250 - Part 8 | Two Stroke MotocrossTwo Stroke Motocross
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Old 09-21-2012, 04:10 PM
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i fallowed the example for preloading the lever spring in the example.with the valves closed. turn it to left slightly.when i did that the spring went back to where it was originally was when i started.i know the spring had know play used a feeler gauge any suggestions.
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