1973 Harley Davidson SX125
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Stage II
Joined: Dec 2010
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1973 Harley Davidson SX125
Hi guys,
I have a 1973 Harley Davidson SX125. Its a 2 stroke bike and im in the process of having it reconditioned. It was in pretty good condition to begin with. It's been sitting around for quite some time and im at the stage of installing the carburretor. I've been told i need a new one as it's not working properly: The needle valve is not sealing properly and shutting the fuel off. Ive managed to source a new valve but still faulty. No-one can work out what the problem is. So i am after a new carb. The exact model number is: Dellorto SH2-24. Does anyone know where i could source one from or does anyone have one ? If i am posting in the wrong thread then let me know, its my first post. Any help would be greatly appreciated! Cheers, Mike.
I have a 1973 Harley Davidson SX125. Its a 2 stroke bike and im in the process of having it reconditioned. It was in pretty good condition to begin with. It's been sitting around for quite some time and im at the stage of installing the carburretor. I've been told i need a new one as it's not working properly: The needle valve is not sealing properly and shutting the fuel off. Ive managed to source a new valve but still faulty. No-one can work out what the problem is. So i am after a new carb. The exact model number is: Dellorto SH2-24. Does anyone know where i could source one from or does anyone have one ? If i am posting in the wrong thread then let me know, its my first post. Any help would be greatly appreciated! Cheers, Mike.
Road Warrior
Joined: Aug 2008
Posts: 1,306
Likes: 865
From: Sheboygan, WI
If I were you I'd try to get the old carb to work yet. If it is the inlet needle leaking, there should be a way to fix it. I've had several that didn't want to seat, even with a new needle, and this what usually fixed them:
Take an old all metal needle (w/o viton tip) and put some valve lapping compound or other light paste abrasive on it (i've even used toothpaste, but it gums up and can be a pain to clean out later on) stick it up in the hole and spin. It will lap the seat and clean up any corrosion, giving the new needle a good surface to seal against. I actually epoxied a needle to the end of a drill driver bit and I use my cordless drill to to it.
Good luck
Take an old all metal needle (w/o viton tip) and put some valve lapping compound or other light paste abrasive on it (i've even used toothpaste, but it gums up and can be a pain to clean out later on) stick it up in the hole and spin. It will lap the seat and clean up any corrosion, giving the new needle a good surface to seal against. I actually epoxied a needle to the end of a drill driver bit and I use my cordless drill to to it.
Good luck
Seasoned HDF Member
Joined: Oct 2005
Posts: 7,499
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From: Santa Klaus County, Cali
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