honda 71' cb100 fuel line help

bamcoy40 · 07-14-2012, 06:00 PM

I'm not sure where things like this are supposed to be posted but i need help. I'm restoring an old honda cb100 and am stumped on what i thought would be the easiest step. there are 3 line, 2 from the carburetor and one that goes into the engine. where do the lines go? i know one from the carb goes to the tank valve nipple. where do the other 2 go? any help is appreciated! thanks.

goalie · 07-14-2012, 06:37 PM

Lets see... playing with old Hondas is filed under "animedevildog."

LWRider · 07-17-2012, 10:23 AM

There is a line running into the carb from the tank (4.5 mm) and another one (smaller diameter, 3.5 mm) running from the carb float chamber drain. You said "three"? Is one of those pretty large diameter? Perhaps an oil breather tube? Schematic doesn't show that, but usually there is a breather tube running from the top of the engine back and down as a kind of vent. Could that be the one that "goes into the engine"?

Cheers,

Mike

07-14-2012, 06:00 PM	#1
bamcoy40 Newbie Join Date: May 2012 Posts: 3	honda 71' cb100 fuel line help I'm not sure where things like this are supposed to be posted but i need help. I'm restoring an old honda cb100 and am stumped on what i thought would be the easiest step. there are 3 line, 2 from the carburetor and one that goes into the engine. where do the lines go? i know one from the carb goes to the tank valve nipple. where do the other 2 go? any help is appreciated! thanks.

07-17-2012, 10:23 AM	#3
LWRider Challenged Mechanic Join Date: May 2009 Location: Lake Wales, FL Posts: 2,320	There is a line running into the carb from the tank (4.5 mm) and another one (smaller diameter, 3.5 mm) running from the carb float chamber drain. You said "three"? Is one of those pretty large diameter? Perhaps an oil breather tube? Schematic doesn't show that, but usually there is a breather tube running from the top of the engine back and down as a kind of vent. Could that be the one that "goes into the engine"? Cheers, Mike __________________ To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

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07-14-2012, 06:37 PM	#2
goalie Senior Member Join Date: Dec 2011 Location: Fairfax, Virginia -- near Fair Oaks Mall Posts: 1,596	Lets see... playing with old Hondas is filed under "animedevildog."