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1981 GS 750 L: trying to hook back up the fuel line on the gs750 ...

Trying to hook back up the fuel line on the gs750 suzuki. The long line on the gas tank is trobleming me where to it go?

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Hi if that line is connected to the under side of the tank its a breather hose rout is somewhere i believe near the side of the air box then down near the swing arm

Posted on May 03, 2010

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My bike bike runs on main tank even on low somtimes shows some missing. I think my reserve tank doesn't work.Any suggestions?

Check the reserve fuel line and the main fuel line to make sure they haven't been switched. I purchased a Suzuki Intruder and was riding all the way to reserve to check the mileage and when I ran out I couldn't start it even though I switched to reserve. Turns out that someone had the tank off to service the air cleaner and had reversed the two fuel lines so the fuel valve was running the bike on the reserve tank tube. so when I switched to the reserve position it was hooked to the taller brass tube in the tank and the gas level was already below it. The tanks just have two brass tubes, one taller than another so gas cannot be sucked below the taller tube when on main and then when switched to reserve it sucks from the shorter tube allowing the remaining gas to be used.

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Weedeater manuals

The diameter of the fuel lines are bigger then the holes in the fuel tank. Make sure u get the right diameter fuel line. The fuel lines are basically crimped by pressure. Sometimes its like there welded in place. There should be two fuel lines. One is short goes from carb to tank. When you use the primer bulb it takes fuel from tank through carb spits it back into tank. The longer one has the fuel filter on it. Empty all the gas from tank. Look inside of tank with a flashlight and try to locate the fuel filter. Take a piece of wire make hook on one end. Try to snag the fuel filter and pull out. Might as well replace filter while it is out. Take a pair of long nose pliers and grip the hose as close to the hole as possible. Try to pull with even pressure(no yanking). The lines may break because they could dry rotted. Make sure to hook lines back up the same way they came off carb.

Feb 01, 2014 | Weedeater Garden

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I have a 1981 Suzuki GS750L. Not sure where the vacuum line from the carb hooks up to. Bike has not run in 20 years. It was a basket case. I am putting it back on the road. I see there is a vacuum...

The petcock has a diaphragm and needs a vacuum to allow fuel to flow, It is a safety fuel shut off, if the engine stops NO VACUUM, NO FUEL to carbs, there is usually a vacuum take off on the inlet manifold pipe between the carb and the engine. Hope that helps

Oct 31, 2013 | 1981 Suzuki GS 750 L

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Have 2 gas lines dangling in gas tank, mcculloch 42c, 36cc, older, one line has filer other for primer????? or did it come disconnected

Hi perfecthelme...
Those are broken fuel lines your are seeing and a fuel filter inside of the tank
I will include a fuel routing drawing.
Before you remove any fuel lines, make a drawing or take a picture of how the lines are connected to the tank for later reference.
You will need to remove all the old fuel lines and fuel filter out of the gas tank.
Clean and remove all trash,broken pieces of fuel line,etc. from the fuel tank.
After you have all the fuel lines and filter removed.
You need a piece of wire...smaller diameter than the inside of the fuel line, insert the wire into the fuel line until it exits the fuel line then bend a hook on the end of the wire to hook over the fuel line.
You will lubricate about 1 inch of fuel line with a small amount of vasoline or light machine oil...
Now using your fingers or small needle nose pliers collapse the fuel line around the wire hook and insert it into the hole in the fuel tank.
After you have the fuel line in the tank, extend enough fuel line into the tank to exit the fill spout of the tank and remove the wire from the fuel line.
You will insert the new or cleaned fuel filter into the line and pull the fuel line to pull the filter just back into the tank.
Please take time to rate me

Sep 24, 2011 | Garden

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1981 suzuki gs750. Replaced stator, wasn't charging. Charging now, but spark plug fire is real weak. Runs good at low rpms, but sputters at higher rpms.

Have you checked the points? Be sure to clean the point contacts, also she may need a new condenser if it is not new (they break down with age). Did you clean the carbs? Did you mess with any adjustment screws? post back with what things you have done.

Apr 19, 2011 | 1981 Suzuki GS 750 L

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Remove the gas tank then run the new cable along side the old cable. Unhook the old cable at the engine then hook up the new cable. Now remove the old cable from the bike. Give the cable adjusters all the slack you can get then hook the cable into the clutch handle. Pull the outer cable outward and hook the end of the outer cable on the outside of the adjuster. Pull the lever in all the way then release the lever while pulling on the outer cable. This should allow you to snap the cable end into the adjuster fitting. Below is a generic photo. Please rate my answer. Thanks! tombones49_47.gif

Apr 01, 2011 | 1978 Suzuki GS 750 E

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Hi got a suzuki gs750 not ran for a number of years,getting a spark at all spark plugs,have checked timing all ok but wont start not even trying,it seems to be fuel starvation but cant think whats wrong...

when you say a number of years is it the same petrol in the fuel tank?

personnely i would look at the filter in the fuel tank is it clean when you turn on the petrol does it run freely? disconnect the fuel pipe and empty the tank into a fuel can

i know you said that you have cleaned the carb but did you check the floats? a messy job which will cover your hands in petrol but must be done im afraid

give me shout if when you have done this and maybe i can help some more


Feb 21, 2011 | 1978 Suzuki GS 750 E

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Need wire diagram for 1981 susuki gs750l

i have a few diagrams from the clymers manual. gs750 fours 1977-1982. i have the same bike as you, but im not sure what diagram is the corrext one.. i think its the 1979 GS750N & EN one., lemme know if that works illl scan it

Dec 07, 2010 | 1981 Suzuki GS 750 L

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