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flexo6



Joined: 27 Sep 2009
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PostPosted: Wed Sep 30, 2009 2:09 pm    Post subject: Vacume lines? Reply with quote

Does anyone have a diagram where the vacume lines go??? I have 2 vacume lines coming out of the plastic intake...both cut by previous owner and there looks to be one on the carb...I plugged both on the intake and it runs fine...but just curious where they are supposed to go? Guess I better invest in a manual soon Icon_lol5. By the way it is a 150cc.


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955i



Joined: 24 Sep 2009
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Location: Scotland

PostPosted: Wed Sep 30, 2009 2:29 pm    Post subject: Reply with quote

Have a look at the 50cc four stroke service manual PDF on this page -


http://www.chinesescooterclub.co.uk/default.asp?pageid=14

Even though its for the smaller engine the layout of many of the components is basicly the same.


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NOLA Scott



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PostPosted: Thu Oct 01, 2009 2:38 am    Post subject: Reply with quote

This might not be the case outside North America, but on both of my scooters there is a vacuum diagram inside the seat bucket. It's a schematic, but that should be enough to help decide where a tube goes if one end is still connected.



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flexo6



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PostPosted: Thu Oct 01, 2009 11:49 am    Post subject: Reply with quote

NOLA Scott wrote:
This might not be the case outside North America, but on both of my scooters there is a vacuum diagram inside the seat bucket. It's a schematic, but that should be enough to help decide where a tube goes if one end is still connected.
Nope..mine don't have it.....but thanks for the heads up!!! Appreciated!


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NOLA Scott



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PostPosted: Fri Oct 02, 2009 1:14 pm    Post subject: Reply with quote

Bad luck there. Of course it couldn't be that easy. Wink



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snaphappyalex



Joined: 20 Mar 2009
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Location: Telford, West midlands, England

PostPosted: Fri Oct 02, 2009 10:04 pm    Post subject: Re: Vacume lines? Reply with quote

flexo6 wrote:
Does anyone have a diagram where the vacume lines go??? I have 2 vacume lines coming out of the plastic intake...both cut by previous owner and there looks to be one on the carb...I plugged both on the intake and it runs fine...but just curious where they are supposed to go? Guess I better invest in a manual soon Icon_lol5. By the way it is a 150cc.

One goes to engine breather (On the valve cover) but the other I'm not sure of.
Make sure the engine breather pipe is filtered somehow because otherwise you will have crud in your oil...
If the twat blocked it OFF... then rectify immediately with some 5mm I'd hose, and connect it back to the air-box. I'd rather have an oily air-filter than a bit of grass wrecking my bearings =P



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Yellow Scooter



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PostPosted: Sat Oct 03, 2009 4:25 pm    Post subject: Reply with quote

I never had anything contaminate my oil. Least not by having the breather hose pointed at the ground. The stock filters are too damn expensive just to let be spraying with oil. IMO.
There are only 2 vacuum accessories that I'm aware of. on a standard chinese 50-150 GY6 scoot.
One vacuum line is for the fuel petcock or fuel pump. A lot of folks with scooters that have rear mounted fuel tanks will replace the vacuum petcock with a mechanical on/off flow valve. The vac petcock is notoriously unreliable.
The other vacuum line goes to the stock cvk carburetors. If there is no vacuum line from the intake to the carb, then the carb uses a mechanical slide.



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