1991 750 - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 4 (permalink) Old 02-22-2014, 12:42 AM Thread Starter
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1991 750

I have a question about a hose i can't identify. If anyone has the manuel, it is on page 4-10 under "Engine Top End" the bottom right picture is reinstalling the cylinder head cover. On my bike the front cylinder has a small (maybe 1/2" diamiter x 4" long) hose that comes out the front. I looks just like the hose in that picture in the manuel exept mine is all squashed and points down. I have been trying to figure out what that hose's purpose is?
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post #2 of 4 (permalink) Old 02-22-2014, 01:06 AM
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I believe the one your talking about goes to the engine vent, if its the one that hangs down in the front right by the oil filter that is a drain for the air box. Sorry don't have a book, just going from memory.


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post #3 of 4 (permalink) Old 02-22-2014, 08:05 AM
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either the drain for the airbox (which drops down infront of the engine), or the breather, which goes from front cylinder to the bottom of the air box
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post #4 of 4 (permalink) Old 02-22-2014, 09:19 AM
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The drain hose is approx. 1/4" diameter, the crankcase vent is the larger, shorter one. The crank vent should be connected to the airbox or have a filter on it. I wouldn't leave it open.

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