Quick valve adjustment question

Started by amotodad, Dec 27 2004 09:12 AM
17 replies to this topic

  • amotodad

Posted 27 December 2004 - 09:12 AM

#1


In my owners manual on valve adjustment it talkes about removing the
gas tank to get to the valve and cam cover. I thought i saw a post somewhere on this fourm that you dont necessarily have to do this.
Just looking at, i can get to the cover bolts but is there enough
room to get the cover past the cam or can they be check without taking the cover completly off. Any help would be apprecated. :excuseme:

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  • rexbond007

Posted 27 December 2004 - 11:11 AM

#2

for the two minutes it takes to take the tank off, it saves alot of grief in the long run! and you can see what you doing.

  • merlinn

Posted 27 December 2004 - 05:27 PM

#3

I agree take the tank off. Just think of how much work it will be when trying to install or remove a shim and it falls where the sun dont shine :excuseme: :mad: !!!! Take the tank off!!!!

Merlinn

  • amotodad

Posted 27 December 2004 - 07:22 PM

#4

Yea I went ahead and took the tank off. I dont see how you could do it
without taking it off. When I bought this RMZ I was told it only had about
5 hours on it. It looked brand new not hardly a scratch on it. I changed
the oil made sure everything was adjusted and let my son have it saying
to myself i will check the valve clearance after he rides it a couple of times.
Well that day came today and I was shocked when i could not get a
.0025-inch gauge under the right intake. The right exhaust is a little tight
but the other 2 are ok. I still dont think this bike has more than 10 hours
on it. But it does seem strange to have 1 that far out of spec. :thumbsup:

  • rexbond007

Posted 28 December 2004 - 08:38 AM

#5

@ 1.5 hr had left intake tight and right exhast border line. there all coming from the factory tight. when i told my dealer he said don't worry they bounce around and it's not broke in yet. i think the guys that are having valve problems are the ones that don't check there valves.

  • rexbond007

Posted 28 December 2004 - 09:02 AM

#6

Out of curiosity what are your stock shim sizes?

  • amotodad

Posted 28 December 2004 - 10:18 AM

#7

Im taking it to my mechanic today. I would do it myself but just dont have
time right now and we need it for saturday. I will get back and let you know
what the shim sizes are.

  • nickjonesracing

Posted 28 December 2004 - 12:25 PM

#8

My stock shims are between 290-305.... seem big so i was wondering if mine had been looked at previous?

  • MXER43

Posted 28 December 2004 - 12:43 PM

#9

It's not likley that any two bikes will have the same shims, every bike is shimmed at the factory to spec. The shim is the place where you can adjust for the slight differences in the manufacturing prosess. Each head is machined a little different, valves can be a little different etc.

  • yukon

Posted 28 December 2004 - 02:37 PM

#10

What Size Feeler Gauges do I need to pick up?? I picked up a 26 blade one from auto parts store, but i've never done this so all new to me. Just wondering if someone could shed some light on which size gauges I needed so I can check the package I bought before opening..

thanks

  • rexbond007

Posted 28 December 2004 - 02:58 PM

#11

sounds like you got the right ones, most common sizes used is from .10-.25 mm
if you have lots of sizes in between thats good.

  • yukon

Posted 28 December 2004 - 05:02 PM

#12

the ones I have is like .102 mm , .127 mm none that are bigger than .635mm -------------.038mm is the smallest and .635mm is the largest

  • 4strokesrule

Posted 29 December 2004 - 04:52 AM

#13

The feeler gauges need to go as near to zero as possible, and be narrow at the tip. As far as the guy thinking the only people having valve problems are the ones not checking their valves, you must be new to this forum!!

  • yukon

Posted 29 December 2004 - 05:31 AM

#14

I give up.. I might as well take my bike to a mechanic.. I have no idea what anyone is talking about.... i'm just retarded I guess..heh

  • rexbond007

Posted 29 December 2004 - 09:42 AM

#15

download the sevice manual @ http://www.nbsupercy...vicemanuals.htm
and give it a try it's not that hard. also @ the yamaha forum, they have online instructions, the basic 1 2 3 's are there @ http://www.thumperfaq.com/valves.htm

  • yukon

Posted 29 December 2004 - 10:26 AM

#16

Is a 2 stroke less maintenance?? I have a friend with 04' CR 250 and hes wanting to trade with my 04' RMZ 250... his bike is basically brand new he don't know how to ride it... what you guys think and don't be partial....heh reason i asked in this thread is because by now you all know i'm mechanically inclined.. and i don't want to take my bike an hour away to get the valves worked on every 10 rides.. to expensive

  • rexbond007

Posted 29 December 2004 - 12:19 PM

#17

no 2 smokes are more maintance. When you buy a new rm 2 smoke you get in a box. a piston , rings , crank , head gasket. that right there tells a guy something that it's high maintance!

  • yukon

Posted 29 December 2004 - 01:03 PM

#18

maybe i need to go back to riding in my red flyer wagon... justs wheels baby.. just wheels...



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