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06-22-2010, 10:46 AM
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#1 (permalink)
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Junior Member
Member #3621
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Vacuum lines
I'm trying to help a friend of mine fix his 400 AT that someone trashed. Under the seat we found some vacuum lines that were disconnected, in total there are four of them. Two of them run from the front and rear differential, the other two run from both sides of the carb. I posted a pic with green arrows pointing to the ones from the differentials and blue arrows pointing at the ones running out of the carb.
Does anyone know where and how these lines are supposed to be connected?
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06-22-2010, 11:59 AM
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#2 (permalink)
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Super Moderator
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Are you sure they are vacuum lines? They could just be breather lines/ overflow/ vent...
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06-22-2010, 05:05 PM
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#3 (permalink)
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Junior Member
Member #3621
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To be honest i don't know. They look like vacuum lines to me. We are still waiting on the manual for it. Was just hoping someone could shed some light on it for me.
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06-22-2010, 05:30 PM
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#4 (permalink)
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Super Moderator
Member #948
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I believe they're just vent lines.
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Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!
You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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06-22-2010, 05:36 PM
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#5 (permalink)
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Junior Member
Member #3621
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so they are aren't supposed to tie into any T valves or anything?
By the way I do know there is a seperate overflow tube running under the carb, but that isn't one of the ones I'm talking about
Last edited by Redfish; 06-22-2010 at 05:44 PM.
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06-22-2010, 05:57 PM
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#6 (permalink)
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Super Moderator
Member #948
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Quote:
Originally Posted by Redfish
so they are aren't supposed to tie into any T valves or anything?
By the way I do know there is a seperate overflow tube running under the carb, but that isn't one of the ones I'm talking about
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I just went and looked at a 350 Rancher out in my garage and the only difference that I see in the lines on it and the lines in your picture, is that the two carb vent lines are run into a tee and exit as one line. It's actually not tee shaped, it's y shaped. The line then runs along the frame rail up under the gas tank.
__________________
Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!
You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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06-22-2010, 06:00 PM
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#7 (permalink)
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Junior Member
Member #3621
Join Date: Jun 2010
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Thanks Helmut. You seem to know your stuff and I appreciate your help
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06-22-2010, 06:00 PM
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#8 (permalink)
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Senior Member
Member #805
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Location: Southaven,Ms
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Just vent tubes foe the carb need to be routed up high to stay out of the water when crossing deep holes.
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06-22-2010, 06:09 PM
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#9 (permalink)
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Super Moderator
Member #948
Join Date: Oct 2009
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Quote:
Originally Posted by Redfish
Thanks Helmut. You seem to know your stuff and I appreciate your help
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You're welcome, glad to help.
__________________
Most 4-wheeler problems are caused by a loose nut connecting the handlebars and the seat!!
You only need two tools in life -- WD-40 and duct tape. If it doesn't move and should, use the WD-40. If it shouldn't move and does, use the duct tape.
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