Question about Suzuki Motorcycles
I have a 1975 Suzuki TS 125, I can get to start both with choke and w/out choke and it will run if I am revving but as soon as I let off the throttle it dies, I have changed the fuel filter and hoses, cleaned the air filter, changed the battery and have adjusted the carb to 1 and 1/2 turns what do I do now? @
Hi, Qwintynsdadd and the usual suspects are:
1. Throttle cables not properly adjusted.
2. Air fuel mixture screw not properly adjusted.
3. Fuel Tank empty.
4. Fuel valve was not turned to on or reserve.
5. Fuel tank contaminated ie. rust, water, dirt, etc.
6. Clogged idle jet and or air circuit.
7. The bike has been sitting and the carburetor needs a rebuild.
8. Faulty IAC valve or out of adjustment.
9. Valves adjusted too tight.
10. Fuel filter clogged.
11. Fuel lines pinched or kinked.
12. Carburetor float stuck in the closed position.
13. Carburetor vent line clogged-pinched or kinked.
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Posted on Apr 22, 2019
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Posted on Jan 02, 2017
I have been working on my carb today,the pipe from the bottom of the carb should just run down by the bottom of the swinging arm,there should be another pipe from the pipe on the left side of the carb just above the fuel intake which also runs down to the swinging arm and connect to nothing.
Posted on May 30, 2009
SOURCE: Hyosun Scooter Carb Adjustments
Very good thought process on the adjustments. The throttle screw sets the idle speed and the air screw sets the fuel mix at idle speed. The stock setting is 1.5 turns outward. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward.
From this point you adjust the idle speed then adjust the air screw for fastest idle speed at that throttle screw setting. If the idle speed becomes faster than desired after adjustment, just reset the throttle screw and then reset the air screw.
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Posted on Jun 27, 2009
Pay special attention to the parts in red. DO NOT mix parts from the front carb with parts from the back carb. When removing adjuster screws and jets, count the number of turns to remove them, write it down, and replace with the same number of turns.
Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock. www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx
Go to this site and you can download a free PDF service manual.
www.carlsalter.com/motorcycle-manuals.asp Most all of the manuals are in English but some are not. There is no way to be sure without doing the download. You can always delete it if in a foreign language.
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Posted on Jul 02, 2009
Take the carburetor apart again, remove the main and idle jets and idle mix screw, plus the float and needle valve. The main jet holds an 'emulsion tube' in--look inside where the slide valve moves, you should see a short brass tube projecting out of the bottom. Carefully push down on that tube with a plastic rod or wooden dowel, it should drop out the hole where the main jet was. Chances are that the tube is dirty and needs to be cleaned--look carefully at the series of small holes drilled into the sides of the tube. These small holes deliver air which is mixed into the fuel passed through the main jet. That air comes from a small hole just inside the intake side of the carburetor. The long needle that sticks out of the slide bottom controls low to mid-range speed fuel-mixture. Check that the 'C' clip on the top end of the needle is in the center groove and that the retainer spring is pressed down the 'C' clip. Now soak the whole carburetor with spray cleaner, then blow out all passages with compressed air. Don't soak the rubber-tipped needle valve from under the float. On reassembly, set the idle mix screw 1-1/2 to 2 turns CCW from CW stop. Adjust for best idle after you get it running and warmed up. I hope this long winded explanation helps!
Posted on Aug 14, 2009
where the valves set cold or hot? could make the world of a difference...is there intake leaks? bad floats perhaps....its a problem that will take some time cancelling out problem by problem
Posted on Oct 09, 2009
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