2 stroke dirtbike gearbox loose gear

[770]

one of the gears in my gearbox is loose, you can lift it up and down. is this normal???? what part is missing if its not supposed to be this loose??? Husqvarna sm 125

picture: https://postimg.org/image/42m5ikpvt/

video: https://www.youtube.com/watch?v=-ixm0x4A4HE&feature=youtu.be

[unitynotsocri...]

They are usually loose , especially with half of their support removed.....I.e. The crankcase half . while the engines stripped replace the gearbox bearings and fit a new crankcase seal.
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nearly a normal tax paying tosser.......with ferrileness suzi100,cg125,cb125scb100n,cb175,cd100,cj250t,kh250,c15,125 bantam,super 6,rickman gs750,xt500,250rs,dt175,lifan125,dolomite1850,metro,Morris220ld,morrisfg,leyland princess,range rover,corsa,vw camper .now struggling with legs. MORE ORDER = MORE CHAOS

[serlant]

I would say there is a spacer missing, in the youtube video it has dogs on the other side of the gear, so don't think it should be floating like that.

check page 28 number 4, https://docs.wavenetworks.us/parts//1998%20WRE-SM%20125.pdf

this is just the first 125sm I came across. what year is it?

Edit, this part doesn't change between the 1998 WRE-SM 125 and the 2007 model WRE-SMS 125.

https://docs.wavenetworks.us/parts//2007%20WRE-SMS%20125%20Parts.pdf

Part number is 8A00 61261. is likely what you are missing.
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04 CBR1000RR, 1995 Husqvarna TE410, 1998 VTR1000(Sold), 1990 XJ600(sold), 1996 KH125(dead and sold)