Suzuki 2 Strokes

Afternoon all, I’m currently rebuilding a gt550 I’ve had the cases vapour blasted and I’m trying to get the gear selector to work? I took pictures of it as I pulled it apart and I just can’t seem to change the gears, top crank case is still off so I have been trying different things but it all seems so stiff on the selector. Has anyone else had this trouble? Il see if I can upload some pictures any help is greatly appreciated

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I know I haven’t got the drum holders screwed in but I did and I took them out to see if there was something wrong

unfortunately i haven't rebuilt a 550 gearbox for about 6 years, but, here's a few things to check. i presume you took the selector fork rods out when you had the cases vapour blasted? did you take the needle roller bearing out that the selector drum sits in? if not then it's gummed up with crud from the aquablaster media. 2. have you put one of the selector forks in the wrong way? 3. is the stopper for the shift cam [that thing with the disc and spring on it] the wrong way round? washing the needle roller out with blasts of wd40 or whatever won't work - ask me how i know
cheers, dd.
p.s. don't forget the thrust washer on the end of the drum either

Strange that I've dismantled a few GT550s, but not 'remantled' one fully crankcase wise.
Where are you based? I've got a 'few' 550 engines that can be opened up to compare with yours. What model engine is yours? (check engine numbers here - http://www.ozebook.com/compendium/suzi/ ... engnos.htm) as there are a few differences - https://www.oldjapanesebikes.com - see gt550 field guide.
Oh, I'm near Barnsley, South Yorkshire.
And for exhausts, there's Mick Abbey - Abbeyspeed - who did these. Or here - https://www.kettleclinic.co.uk/kcforum/ ... &start=210 build thread. It's still in the garage btw.......

Just realised I haven’t put the needle bearing back in ... it’s on order now
Thanks for all the help