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dannyboy20
07-10-2003, 05:29 PM
am i supposed to inspect my vales ever 20 hours on my 400 ex. Some yamaha mechanic told me. :confused:
4TraxRider
07-11-2003, 09:59 AM
Doesn't hurt, but if you everhear them ticking you need to adjust them.
dannyboy20
07-11-2003, 03:50 PM
is the ticking sound very noticable ?
4TraxRider
07-13-2003, 09:01 AM
You can definately notice it at idle, after it revs and you have a aftermarket exhaust its not unles they are really bad. It only takes a few minutes to do, check them, whats the worst that could happen.
dannyboy20
07-13-2003, 03:31 PM
how do u get at them whats the easiest approach and how do u adjust them.
Scott-300ex
07-13-2003, 05:13 PM
on the 300ex the manual says the first 20 hours,

you can have someone do it or you can do it yourself, look in the tech section and there is a step by step explanation for valve adjustment