Vacuum fuel shut off

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jk50
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Vacuum fuel shut off

Post by jk50 »

Do they ever actually shut fuel flow off? Changing the jet on my 2024 buddy 50 I noticed fuel would continue to flow from the hose. I ended up raising the hose up above fuel level to stop it (limited tools at home, didn’t even have a zip tie)
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DeeDee
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Re: Vacuum fuel shut off

Post by DeeDee »

Yep, if there is no suction, there should be no fuel flow. Ethanol eats the crap out of the petcock. A drop or two is normal. If you have a steady trickle, the petcock is bad.
Less chit chat, more riding, Buddy 50, 125, 170i, RH50, Yamaha C3
jk50
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Re: Vacuum fuel shut off

Post by jk50 »

Thing only has 700 miles on it to. Is there a manual shut off valve available as a direct replacement?
nobade
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Re: Vacuum fuel shut off

Post by nobade »

I found this one today:
https://scooter911.com/shop/genuine-bud ... uel-valve/

Though $50 for a fuel tap seems a bit much. There are lots of them available in different sizes, I'm currently trying to find out what size the threads are on the Buddy's tank. AI says M14x1.25 but I don't trust AI very much.
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DeeDee
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Re: Vacuum fuel shut off

Post by DeeDee »

Less chit chat, more riding, Buddy 50, 125, 170i, RH50, Yamaha C3
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DeeDee
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Re: Vacuum fuel shut off

Post by DeeDee »

jk50 wrote: Mon Sep 23, 2024 4:39 am Thing only has 700 miles on it to. Is there a manual shut off valve available as a direct replacement?
Here's one: https://www.ebay.com/itm/235659371556?_ ... R7SY6qHEZA

I wouldn't use it. Seems like a pain in the ass. The vacuum operated petcocks are really quite reliable.
Less chit chat, more riding, Buddy 50, 125, 170i, RH50, Yamaha C3
nobade
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Re: Vacuum fuel shut off

Post by nobade »

DeeDee wrote: Tue Sep 24, 2024 3:42 am
jk50 wrote: Mon Sep 23, 2024 4:39 am Thing only has 700 miles on it to. Is there a manual shut off valve available as a direct replacement?
Here's one: https://www.ebay.com/itm/235659371556?_ ... R7SY6qHEZA

I wouldn't use it. Seems like a pain in the ass. The vacuum operated petcocks are really quite reliable.
Thanks! That was exactly what I was looking for. I'm used to using a manual valve on my motorcycles, so this won't be much of a change. It will be good for storage as well as maybe a little bit of theft deterrence.
jk50
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Re: Vacuum fuel shut off

Post by jk50 »

oddly, when I went to restart the scooter the carb was dry and I had to crank it. maybe its not leaking after all. I only use Non Ethanol in this scooter. e10 is fine in my fuel injected Piaggio
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DeeDee
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Re: Vacuum fuel shut off

Post by DeeDee »

For the past 4 years I use Ethanol free 87 in everything I own including my 1991 Ford Ranger. Watch the video from Project Farm on Ehanol in fuel and additives that are supposed to combat it.
Less chit chat, more riding, Buddy 50, 125, 170i, RH50, Yamaha C3
scootERIK
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Re: Vacuum fuel shut off

Post by scootERIK »

jk50 wrote: Tue Sep 24, 2024 3:12 pm oddly, when I went to restart the scooter the carb was dry and I had to crank it. maybe its not leaking after all. I only use Non Ethanol in this scooter. e10 is fine in my fuel injected Piaggio
How much fuel leaked out? I am often surprised how much fuel there is in the line between the carb and the petcock.

Also, if it's a 2024 wouldn't it still be under warranty?
jk50
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Re: Vacuum fuel shut off

Post by jk50 »

It would be. I’ve changed enough parts on this thing i don’t think there is much warranty left. Also, riding or transporting this 60 miles away is to much work. It took me 4hrs to ride it home. The amount I would need to pay for service at the dealer I could probably buy a used engine, or whatever I needed for less.
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Point37
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Re: Vacuum fuel shut off

Post by Point37 »

anyone ever just install a fuel shut off valve on the fuel line?...the autocock mounted to the tank may keep the fuel from draining out of the tank but it doesn't keep it from gumming up the carb...was thinking of starting to shut off the scooter similar to how i shut off my snow blower...shut off the fuel and let it starve out
'10 Triumph Bonneville SE (sold), '00 Yamaha TW200 (sold), '08 Husqvarna SM510R (sold), '05 Honda CBR 600RR (sold), '03 Honda CBR 600RR (sold)
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Point37
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Re: Vacuum fuel shut off

Post by Point37 »

Point37 wrote: Mon Feb 24, 2025 4:27 pm anyone ever just install a fuel shut off valve on the fuel line?...the autocock mounted to the tank may keep the fuel from draining out of the tank but it doesn't keep it from gumming up the carb...was thinking of starting to shut off the scooter similar to how i shut off my snow blower...shut off the fuel and let it starve out
update: vacuum petcock replaced with manual shutoff...
viewtopic.php?p=382137&sid=b1048c89b07b ... 1e#p382137
'10 Triumph Bonneville SE (sold), '00 Yamaha TW200 (sold), '08 Husqvarna SM510R (sold), '05 Honda CBR 600RR (sold), '03 Honda CBR 600RR (sold)
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