Gear change/front sprocket

[Kentish]

Hello Focers

My bike is a 2003 FZS 600 I have had a slight issue of changing from first to second sometimes when I am pulling away it seems not to go into second gear and goes to neutral This has only happened twice or 3 times to me so its not regularly . I have 21k on the bike and have it from new serviced it etc. I have had a scott oiler on the bike from new also and the chain and rear sprocket are like new still. However to me the front is worn as the teeth are thinner than they should be a slightly curling over.

The chain adjustment is fine also.

I think it maybe the front sprocket. Is there anything I need to know? I was just going to chain the front sprocket and leave the rest. Its the original sprocket so has done 21k not sure if that's a lot for a front sprocket or not.... I guess I am ok just changing the front and leaving the chain in situ?

Any help greatfully received.

[darrsi]

Start simple and adjust the clutch cable, lower end first then the top.


Have you ever had a new cable? Might be on its way out?

[Kentish]

Start simple and adjust the clutch cable, lower end first then the top.


Have you ever had a new cable? Might be on its way out?

I did wonder that mate. I have never adjusted it at the engine end.. Is that down by the sprocket cover? Come to think of it its a bit floppy and the adjuster at the bar is pretty far out.

[darrsi]

Pop out the plastic bung on the sprocket cover.


http://foc-u.co.uk/index.php/topic,17949...#msg207252



http://foc-u.co.uk/index.php/topic,10124.0.html

[limax2]

I think it maybe the front sprocket. Is there anything I need to know? I was just going to chain the front sprocket and leave the rest. Its the original sprocket so has done 21k not sure if that's a lot for a front sprocket or not.... I guess I am ok just changing the front and leaving the chain in situ?

Any help greatfully received.

I don't think the front sprocket will have any effect on your gear change issue. They say you should change the sprockets and chain together but if the chain and rear sprocket are o.k. and the front is looking worn I would just change that one. I also have a Scottoiler on and still on the original chain and rear sprocket at 45k miles and still not showing signs of wear. However I am now on my third front sprocket, so 21k for front sounds about right on the FZS600 with a lubricated chain. If I was fitting a new chain I would fit new sprockets irrespective of their condition. You will probably need to move the wheel forward to give enough slack to replace the front sprocket and if not already done so replace the 9mm thick sprocket nut with the 12mm one.

[Paulfzs]

where abouts in kent are you? if youre struggling i can lend a hand, im not a pro but ive had enough problems with mine im becoming a pro!

[Fazerider]

The gear selector on the FZS600 has a design flaw. Once the claw on the selector arm is a bit worn it struggles to pull the drum round far enough for the gears to engage cleanly. This particularly affects 2nd gear, but can also prevent 1st from selecting (the drum needs to be pulled round a little further for 1st and 2nd because of the neutral detent between them).
The solution (for me, anyway) was to grind a small amount of metal off part of the selector arm to allow it to rotate further.
It sounds to me as if your bike's in the early stages of the problem and so, with luck, you won't need to replace the selector forks and drum. Details are here (link takes you to the middle of the thread since the first bit is long enough that you'll have dozed off by the time you reach the useful section).

[darrsi]

The gear selector on the FZS600 has a design flaw. Once the claw on the selector arm is a bit worn it struggles to pull the drum round far enough for the gears to engage cleanly. This particularly affects 2nd gear, but can also prevent 1st from selecting (the drum needs to be pulled round a little further for 1st and 2nd because of the neutral detent between them).
The solution (for me, anyway) was to grind a small amount of metal off part of the selector arm to allow it to rotate further.
It sounds to me as if your bike's in the early stages of the problem and so, with luck, you won't need to replace the selector forks and drum. Details are here (link takes you to the middle of the thread since the first bit is long enough that you'll have dozed off by the time you reach the useful section).

This was gonna be the next suggestion but thankfully Fazerider has explained it rather than me. 


With my bike it felt like it was trying to change into 7th gear, there was nothing there at all, then after a bit of clunking and clattering it would bang into 2nd, almost like a badly mistimed gear change without using the clutch.
All happened rather quickly for me though and i was about a mile from my mechanic so headed straight to him instead of going to work.
If i remember correctly there was going to be a big delay on parts, like 4 weeks, which i simply couldn't deal with, and he ended up changing a main gear selector spring and it actually fixed the issue perfectly.
It was a recognised problem that he'd dealt with before so i'm not sure if he did any other jiggery pokery but all i know is he sorted it out okay.