SRX400 gear lever return

[guest1350]

Hi

Just took out an SRX400 I purchased to get its MOT after a week of tarting it up and replacing a few bolts. It got through the MOT ok but when riding it I found that to get it to go through the gears I had to manually return the gear lever to the centre every time. It should centre its self so you just toe it up or down gears as required but its not.

So my question is.. What can I do about it? Is it a strip down job to the gear box or does it sound like there is just a spring missing some were under an easily accessibly cover. Or do I have to learn a new shifting technique. 

Cheers

Tim

[chippit]

I had the same problem with my morini dart, it had been off the road for a while. Before you start pulling it all apart check that the joints to the gear change linkage are not seized. I had one of the two which was fine for 50 odd miles then it started to seize.I was convinced it was something serious with the gearbox, once I had changed the joint it was been fine.

Regards Christine

[guest1350]

Hmm

The linkages are lose, perhaps too lose! But the gear shaft seems stiff perhaps there is a gland that's to tight.

[Steve H]

The shaft looks like this

The return sprint (6) can be found inside the clutch cover. If shaft 1 is bent then it may need to be stripped

[guest1350]

That's a great drawing! I could not find that in my PDF of the workshop manual. Is it from a SRX or say and XT?

Is that return spring accessibly without removing the engine?

Ta

[Steve H]

Drawing is from the parts list on www.srx600.net.

You can access the spring by removing the clutch cover. I 'think' you have to remove the clutch basket but I'm not 100% on that.

Steve

[guest1350]

I will have a go at that, thanks.

If its not simple to fix at the pring on the inside I will just alter the gear lever and place a centring system on the out side.

Cheers

Tim

[Steve Lake]

you can change the spring after removing the clutch basket.... not an onerous task... just make sure the plates go back in the same order they came out.

[guest1350]

So to clarify

I can remove the outer clutch cover while motor is in the bike. Remove the inner Clutch assembly, plates etc and the spring is then accessible?

I have looked very hard at the drawings and pictures and the return spring seems to be buried at the end of the second shaft and that is only accessible by splitting the engine apart.

Thanks

[Steve Lake]

the way you view SteveH's pic the spring at the end of the '2nd' shaft is in fact just behind the clutch basket.... and requires the removal of one circlip (i seem to remember)

[themoudie]

Aye Tim,

As SteveL says. 

If you have a copy of the Yamaha SRX workshop manual or the Clymer XT600 & TT600 1983 - 1989 manual the following should help.

Yamaha SRX manual

Page 3 - 41 Crankcases are assembled.
Page 3 - 42 Install shift return spring, followed by the kickstart assembly.
Page 3 - 43 Oil pump installation.
Page 3 - 44 Clutch installation.

These are the manual 'orders of assembly', and having had a 'looksee' in a spare motor and rebuilt my current motor using these manuals, it seems OK. 

Clymer manual

Page 215 - 218 gives very clear instruction and photographic instruction upon dismantling and assembling the EXTERNAL shift mechanism. Only if you are going to check the 'run out' of the shift shafts are you going to have to split the cases and that info is in Chapter 7, page 235.

Copies of the latter manual available from your local library or cheap from Fleabay.

I hope this helps.

My regards, Bill.

[guest1350]

Ok I see now that the lever goes right the way through the block and ends up on the other side.

Thanks I can see it all now