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Discussion Starter · #1 ·
1988 Vulcan 750 California model. But I changed the
Automotive tire Wood Rim Automotive wheel system Auto part
Automotive tire Wood Rim Automotive wheel system Auto part
tank from a non California What size id are the rubber fuel lines and the vacuum. Could the right carb be different than the left side? I think the nipple elbow shown in the background is fuel and the straight one in the foreground is vacuum? The hose (which broke off and I have to replace it) is the left carb fuel? Are there premolded hoses you can buy or just use neoprene hose?
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2003 VN750
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I think the fuel is 5/16" and the vacuum line is 3/16".

The fuel connects to the black plastic 90 degree elbows and the vacuum port is the brass nipple sticking straight out the side of each carb.

The carb vents come straight up out of each carb, then connect to a tee fitting, then a single line runs to the back of one of the air filter housings, there's a round hole for the hose.

The vent hose has to be sheltered from the wind or it won't run right.
 
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