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Old 09-11-2012, 06:40 AM   #1
scottorious OP
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ch150 carburetor question

I just acquired a kind of basket case ch150 and I want to build a skelly out of it. I am in the process of rebuilding the carburetor and this model has an air cut-off valve. I didnt get the valve while it was put together so I am not sure if there are internals that I am missing. Is anyone familiar with that? The parts view only shows the entire valve and the service manual doesnt mention anything about whats inside the valve body.
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Old 09-11-2012, 11:30 AM   #2
tortoise2
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Quote:
Originally Posted by scottorious View Post
air cut-off valve
This video may or may not help . . link.
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Old 09-11-2012, 07:09 PM   #3
bbishoppcm
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That video SUCKS. Try this one instead; http://www.youtube.com/watch?v=dxpI-SY39AM
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Old 09-11-2012, 07:12 PM   #4
bbishoppcm
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The cutoff valve should never be disassembled; but yours should include a diaphragm, a tiny o-ring, and a spring. If either part is missing, you'll need to either buy a whole new valve from Honda, or buy a used carb off eBay. You can buy a Chinese carb and use it for parts, but beware; the Chinese carbs are a TOTAL gamble (as you'll see in the first video sent by tortoise), but can save you a bundle in parts IF the parts were accidentally made right! In the case of my Honda Helix, the original cutoff valve was leaking, and the o-ring was not available ANYWHERE! I ended up having to buy a whole new valve... for around $90.
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Old 09-11-2012, 08:10 PM   #5
scottorious OP
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thanks for all the info. After seeing the video I could see that I no longer had the parts that go inside. I was able to find one on ebay for 19 dollars and i sprung at the chance after seeing that those things are expensive to buy new.
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Old 09-11-2012, 08:30 PM   #6
bbishoppcm
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Just don't open it! There is a test procedure to verify the valve actually works; the exact procedure escapes me right now though...
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