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HandymanJ

2019 gasgas only changes up

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Broke my gear lever today and obviously brought on some issues in the gearbox.

The bike will only change gear up the box and won’t come down unless leant right over gear lever side (bar end 2 foot off the floor) and wobbled.

Does anyone have any ideas on what I could have done, and the severity of the fix.

Thanks

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Sounds like you need to replace the gear shift shaft. It will be broken inside. Can be done without an engine split. You need to take the side casing off and the clutch basket off to do it. 

 

In the old days it was an engine split to do this. 

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As above.Theres a part behind the clutch that's designed to break if you clout the gear lever hard,it saves damage to the gearbox.Its easy to swap and costs about £50 as I recall 

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13 hours ago, fastbelly said:

Sounds like you need to replace the gear shift shaft. It will be broken inside. Can be done without an engine split. You need to take the side casing off and the clutch basket off to do it. 

 

In the old days it was an engine split to do this. 

With my 2013 GasGas I would have to dismantle/split the engine in such a case?

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Mine was a 2013 and I didn't need to split the cases.It was a factory Replica,don't know if the other models had the upgraded gear shifter parts in the same year

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I think it was from 12 on that has the new design.you should be ok. New shaft was £114 if I remember right! Ouch. 

 

 

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Hi Handyman, the problem may not be the shaft. At the right end of the shift shaft is a selector spring that sits over a sleeved washer with a pin through one end. I think this is called the selector positioner assembly in the parts book. The pin locates into the slot in the end of the shaft. When the gear lever takes a large knock, sometimes the sleeved washer is forcibly rotated and becomes out of alignment which then does not allow you to select gears in one direction usually. The assembly does not take too much to be out of alignment and may well look ok at first glance, the pin must be exactly in alignment with the integral tab that the spring ends locate onto. This is usually the first thing to go when you take a knock on the gear lever, worth having a look first before splashing out on a shaft. You can see this unit behind the clutch basket. Bye, Peter B.

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13 hours ago, peterb said:

Hi Handyman, the problem may not be the shaft. At the right end of the shift shaft is a selector spring that sits over a sleeved washer with a pin through one end. I think this is called the selector positioner assembly in the parts book. The pin locates into the slot in the end of the shaft. When the gear lever takes a large knock, sometimes the sleeved washer is forcibly rotated and becomes out of alignment which then does not allow you to select gears in one direction usually. The assembly does not take too much to be out of alignment and may well look ok at first glance, the pin must be exactly in alignment with the integral tab that the spring ends locate onto. This is usually the first thing to go when you take a knock on the gear lever, worth having a look first before splashing out on a shaft. You can see this unit behind the clutch basket. Bye, Peter B.

was going to say the exact same thing.

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The shaft is an easy fix, if its damaged in any way with the chain link thingies then even with straightening etc it wont be 100%.

I have now taken to filing the back of the lever even more than the slots there so in the event of an off or knock the lever breaks first.

will try to post later

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I drilled a 6mm hole through the lever about halfway down it so it would break there if I whacked it again.It would leave you sufficient lever to change gear by hand if you didn't have a spare

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I took to carrying a spare gear lever in a plastic bag in bottom of the air box in long trials. Ziptie an allen key for the air box screw to the clutch hose. 

 

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9 hours ago, fastbelly said:

I took to carrying a spare gear lever in a plastic bag in bottom of the air box in long trials. Ziptie an allen key for the air box screw to the clutch hose. 

 

you dont take a bag on long tials?

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I use a camel back sometimes and dont want loads of stuff clanking around in there. The gear lever was always in the air box at any trial any time. Bloody things were always falling off until I went oem again. Now I ride a Beta so not a problem. 

 

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I use Loctite 680 Retaining Compound to "glue" my shift lever onto the shaft (since the shaft isn't grooved to hold the lever pinch bolt like are many other bikes). You'll need some heat to soften the compound if you later need to remove the lever (but there's nothing in the area that's an issue to be heated).

Edited by d2w

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