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Scooters - 50cc => Agility 50 => Topic started by: MoToFaLcon on August 07, 2014, 04:19:05 AM

Title: valve adjustment gone wrong
Post by: MoToFaLcon on August 07, 2014, 04:19:05 AM
Decided to do a valve adjustment today because my engine was sounding strained and odd at 3/4 to full throttle.  When i checked the valves, they were both at .08mm?  Suppose to be around .04mm?  So i tried to adjust the top one first, but the dang nut got stuck on the bolt thing.  Was wondering whats the name of that specific peice?  Valve bolt? Lol i have no clue.  Im hoping my dealer might have one in stock soi can replace it.  Tried for 2 hours to get it off, tried heating it under a candle flame, sprayed wd40, etc.  I dont have a 9mm wrench either, was using 2 vice grips and pliers lol.  Iget a 9mm tomorrow or sumthin.  Was having a heck of a time getting it precisely .04mm and then :'(BAM, nut wouldnt move.  It did get stuck at .08mm again though at least.  Test rode just to see and it sounded like a pop can stuck under a bicycle tire noise coming from muffler....But yeah, just need help with the name of that peice.
Title: Re: valve adjustment gone wrong
Post by: MoToFaLcon on August 07, 2014, 04:46:44 AM
Is it called a valve adjustment screw? I think so? Well, guess i kinda found the answer myself i think? 
Title: Re: valve adjustment gone wrong
Post by: blue on August 07, 2014, 08:48:40 PM
You may have to replace the whole valve head so you can adjust later if you hsve to.
Title: Re: valve adjustment gone wrong
Post by: MoToFaLcon on August 08, 2014, 12:57:23 AM
Whole valve head?  What do ya mean blue? ???
Title: Re: valve adjustment gone wrong
Post by: MoToFaLcon on August 09, 2014, 08:40:55 PM
JUST A FOLLOW UP:  Fixed it! Took valve screw from the old thunder 50 and used for my a50, perfect match. Also called a local scooter shop and they had extra screws in stock for $2, but i didnt need it. Set it to .04mm exactly, .05mm would not go in, so got em perfect, now she runs smooth as butter. Hopefully the chinese screw wont melt or vibrate loose or something, that'd be my luck.