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Gas Yamaha Gas Yamaha Golf Cars; G1 through "The Drive" and U-Max Utility Vehicles



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Old 06-25-2011, 12:20 PM   #1
MRFUSION
Not Yet Wild
Yamaha
 
Join Date: Apr 2010
Location: Peace River Alberta
Posts: 37
Default G1 vacuum line to expansion box help??

Hi guys pulled off the line from the crankcase to the black expansion box above the intake and the small vacuum check valve fell out. Which way does it install. Thank you for your help. Shad
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Old 06-25-2011, 09:59 PM   #2
MRFUSION
Not Yet Wild
Yamaha
 
Join Date: Apr 2010
Location: Peace River Alberta
Posts: 37
Default Re: G1 vacuum line to expansion box help??

I should be able to block this line anyways I would think right. Worked on lots of 2 strokes with boost bottles and not usually connecting to the crankcase like this does. Let me know. Shad
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Old 06-26-2011, 10:30 AM   #3
kcnaz
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Yamaha
 
Join Date: Apr 2010
Location: Southern Arizona
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Default Re: G1 vacuum line to expansion box help??

Have a look here.......
http://www.cmsnl.com/yamaha-g1-am3-1...list/A-11.html
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Old 06-26-2011, 05:13 PM   #4
MRFUSION
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Yamaha
 
Join Date: Apr 2010
Location: Peace River Alberta
Posts: 37
Default Re: G1 vacuum line to expansion box help??

Thats the hose on that page, its #38 with the large end that goes to the boost bottle. Inside that line is a vacuum check valve pushed in there. That little check valve fell out and thats my problem. Does the crankcase want to see the charge from the bottle or the bottle to see it from the crankcase? 50% 50% chance I guess. Shad
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Old 06-26-2011, 08:36 PM   #5
kcnaz
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Yamaha
 
Join Date: Apr 2010
Location: Southern Arizona
Posts: 287
Default Re: G1 vacuum line to expansion box help??

The crank is pushing fuel/oil into the bottle. A reserve for combustion chamber for quicker response before the carb picks up ....
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