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Author Topic: 77-78 cb750 gas tank  (Read 586 times)

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Offline Djfob

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77-78 cb750 gas tank
« on: May 02, 2013, 09:14:37 PM »
What's that clear tube that runs from under the gas tank? I'm about to swap a 75-76 tank which does not have that. Both tanks have the petcock on same side.
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78 CB750k

Offline Reganator

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Re: 77-78 cb750 gas tank
« Reply #1 on: May 02, 2013, 09:48:36 PM »
Could it be for ventilation?  I know the earlier style tanks achieved this through the lids, there was a rubber grommet and vent holes in the middle of the cap.  Your 77 tank has that covered filler, so maybe that wasn't an option for that tank?
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Frankenbike CB750: 
71 K1 Frame
72 K2 Engine
75 F0 Carbs:
     #40 slow jets
     #105 Main Jets
     Stock needle and settings.
My-neighbors-love-me-Kerker 4 into 1
Stock airbox

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Offline Stev-o

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Re: 77-78 cb750 gas tank
« Reply #2 on: May 03, 2013, 05:32:23 AM »
what roto said.  If you are very careful while fueling and not spill, you can remove it.
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'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........
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