Gear change pivot screw removal - safe to use an impact driver?

[pete]

Hey all,

According to my Haynes manual, I now need to "Slacken the pivot screw, which passes through the change drum stopper arm".

Yeah right, with whose arms?

Anyway, I can't get it to budge and am wondering if it's safe to use an impact driver on this screw? I'm sorta stuck getting any further 'til I move this one as I don't think I can avoid removing this to crack the cases...

Oh, '81 450 by the way :-)

Pete

[hungryman]

Is the change drum the shift drum? Here's a diagram of where I think you are. If correct, point out the parts you are talking about.

http://houseofmotorcycles.bikebandit...me~GS450EX.asp

[pete]

Hey thanks Hungryman! Yep, it's there... screw number 10 is what I'm trying to remove.

[pete]

Actually no I've got the wrong one! I just looked closer again and I think there's a typo in the manual... It says further down in the same paragraph "The pivot bolt may now be unscrewed fully..." and then talks about the drum stopper arm... which I think is part #15 in that diagram, meaning I should actually be slackening #12 by the looks...

So I should be undoing a *bolt* not a *screw*.

Does that make better sense?

Pete

[pete]

Well, looks like I don't get to find this out until at least next weekend.

My Mrs just decided to give me an early birthday present of 3 nights down the coast, nice but she didn't listen to me tell her I wanted a week solid off work to work on the bike... oh well.