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  #1  
Old 09-24-2022, 04:55 PM
Noobi06 Noobi06 is offline
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Default EC 125 Neutral doesn't work

Hi, I have found a GasGas EC 125 which I am interested in but the owner says the neutral doesn't work after changing his gearbox.
I assume it must be on his behalf since the gearbox he replaced it with is brand new, but how do I fix it if I buy the bike? I've never opened a transmission. I am not that good with dirt bikes since Im not riding them like regular people. In Sweden where I live you can take a license to ride 125cc on the road. I want to buy a dirt bike 125cc (which have indicators and are built for the road so engine rebuilds every 20h is absolutely a waste)
Is the neutral a hard thing to fix? How do I do it


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  #2  
Old 09-27-2022, 06:46 AM
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Anders Anders is offline
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Quote:
Originally Posted by Noobi06 View Post
Hi, I have found a GasGas EC 125 which I am interested in but the owner says the neutral doesn't work after changing his gearbox.
I assume it must be on his behalf since the gearbox he replaced it with is brand new, but how do I fix it if I buy the bike? I've never opened a transmission. I am not that good with dirt bikes since Im not riding them like regular people. In Sweden where I live you can take a license to ride 125cc on the road. I want to buy a dirt bike 125cc (which have indicators and are built for the road so engine rebuilds every 20h is absolutely a waste)
Is the neutral a hard thing to fix? How do I do it
It could be as simple as a missing spring. I have never been inside a GG125, but if they are similar to the bigger ones, there is a plunger and a spring that keeps the selection drum in place.

How old is this bike?

I suggest you look up the parts drawings and have a look.

Most likely, its a simple thing if all other gears are OK.
But you may have to remove the engine from the frame and split the cases.

It could also be just the selector shaft and the mechanism behind the clutch drum, inside the RH clutch cover. It that case, it can be fixed whitout removing the motor.

Impossible to tell without seeing / testing the bike. And even then it might be difficult to tell what's the problem.

Do you have access to tools and a workshop? Fixing these things outside in the rain isn't fun. Things take time, and you might need parts that could take some time to get. Remember that the older GG bikes are not supported by the new owners (KTM).

We will be able to guide you here, I hope
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Anders

"So you know, that you're over the hill when your mind makes a promise that your body can't fill" (Little Feat: Old Folks Boogie)

2015 EC200 Racing: TE bars, Rekluse Core Exp 3.0, 38mm Lectron & Ohlins S3 steering damper
2006 EC200: 2011 plastics, Rekluse Z-Start, revalved KYB forks & Scotts steering damper
1998 Bimota Supermono
1986 Duc Mille S2
1975 Guzzi sidecar hack
1961 Morini Corsaro 125
etc
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Old 09-27-2022, 09:34 AM
Noobi06 Noobi06 is offline
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Thanks a lot for the reply! I am buying the bike in 1-2 weeks time so I will take the engine out and definitely check it out! The springs you are talking about, is it the ones in the image attached? The springs holding the clutch drum/basket?
weqe.jpg
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  #4  
Old 09-27-2022, 09:35 AM
Noobi06 Noobi06 is offline
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It is hard to see but it is a spring coming out as he is screwing it out.
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Old 09-27-2022, 12:52 PM
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no, those are the clutch springs.
What model (year) is this bike?
Please try to locate the parts list for your model year.

There is, as far as I know, no workshop manuals available for the 125. Rumors say that the GG125 is quite similar to the older YZ125, so a Yamaha workshop manual may (or not) be of some help.

There are a few members here that have lots of experience with the 125, I hope they will chime in.

Sent fra min YAL-L21 via Tapatalk
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Anders

"So you know, that you're over the hill when your mind makes a promise that your body can't fill" (Little Feat: Old Folks Boogie)

2015 EC200 Racing: TE bars, Rekluse Core Exp 3.0, 38mm Lectron & Ohlins S3 steering damper
2006 EC200: 2011 plastics, Rekluse Z-Start, revalved KYB forks & Scotts steering damper
1998 Bimota Supermono
1986 Duc Mille S2
1975 Guzzi sidecar hack
1961 Morini Corsaro 125
etc
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Old 09-27-2022, 03:00 PM
Noobi06 Noobi06 is offline
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It is a 2005 gasgas ec 125. Could you send a picture of the springs that you mean? Like where they go? Any pic from google will do
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  #7  
Old 09-27-2022, 03:03 PM
Noobi06 Noobi06 is offline
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This one?
wewe.jpg
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  #8  
Old 09-28-2022, 07:08 AM
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Yes, that's more like it



I was thinking of parts 6,7,8 and 19-21 in this drawing (from my EC200)
They are all vital when it comes to shifting of gears (and keeping the gearbox in the selected position)
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Anders

"So you know, that you're over the hill when your mind makes a promise that your body can't fill" (Little Feat: Old Folks Boogie)

2015 EC200 Racing: TE bars, Rekluse Core Exp 3.0, 38mm Lectron & Ohlins S3 steering damper
2006 EC200: 2011 plastics, Rekluse Z-Start, revalved KYB forks & Scotts steering damper
1998 Bimota Supermono
1986 Duc Mille S2
1975 Guzzi sidecar hack
1961 Morini Corsaro 125
etc
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  #9  
Old 09-28-2022, 10:09 AM
Noobi06 Noobi06 is offline
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Wow thanks a lot! I am buying it in 2 weeks or so, I will update you then!
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  #10  
Old 09-28-2022, 12:21 PM
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Anders Anders is offline
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How old is it?

Sent fra min YAL-L21 via Tapatalk
__________________
Anders

"So you know, that you're over the hill when your mind makes a promise that your body can't fill" (Little Feat: Old Folks Boogie)

2015 EC200 Racing: TE bars, Rekluse Core Exp 3.0, 38mm Lectron & Ohlins S3 steering damper
2006 EC200: 2011 plastics, Rekluse Z-Start, revalved KYB forks & Scotts steering damper
1998 Bimota Supermono
1986 Duc Mille S2
1975 Guzzi sidecar hack
1961 Morini Corsaro 125
etc
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