20 Most Recent 2003 Honda VT 750 C2 Shadow Questions & Answers

Let's focus on adjusting the air/fuel mixture. This adjustment can help balance the fuel-to-air ratio for both cylinders. Here are the steps you can follow: Idle Screw (Air/Fuel Mix): The idle screw, also known as the pilot screw, adjusts the air/fuel mixture at idle. It affects the fuel flow from the pilot jets (idle jets) into the carburetors. Locate the idle screw on your carburetor. It's usually a small black knob near the choke. Turn the idle screw to achieve the desired idle speed. Listen to how the bike sounds while adjusting it. Note: Adjusting the idle screw shouldn't significantly affect the mixture setting. Pilot Screw (Idle Mixture): The pilot screw (idle mixture screw) fine-tunes the air/fuel mixture from idle rpm up to about 1/8th throttle. To access the pilot screws, you may need to remove the air box and carb side cover. The factory default setting for the pilot screws is typically 2.5 turns out. Carefully screw each one in until it lightly seats closed, and then count the number of turns. You can adjust the pilot screws to make the mixture richer (more turns out) or leaner (less than 2.5 turns). Dual Carburetor Sync: Since your bike has dual carburetors, it's essential to ensure they are synchronized. Use a vacuum gauge set to synchronize the carbs. Adjust the linkage screw until both throttle butterflies are in the same position for idle2. Synchronization helps maintain consistent performance between the front and rear cylinders. Check Rear Cylinder Idle: If the rear cylinder isn't running correctly at idle, it could be due to a partially plugged idle jet. Consider cleaning the carburetors if needed. While it can be a bit of work, it's essential for proper performance. If the issue persists, consult a mechanic or consider opening up the carburetor for a thorough inspection. Remember to take your time and make gradual adjustments. If you're unsure, consult your bike's service manual or seek professional assistance. Adjusting the Mixture Screws - VT750DC.com Carb Cleaning on 03 spirit 750 ' Honda Shadow Forums Carb Adjustments ' Honda Shadow Forums

THose symptoms are those of a bike with clogged / gummed up carbs. At this point you will need to remove the carbs, completely disassemble them, and soak the bodies in a quality carb cleaning solution, overnight.

It is different then most other carbs. DON"T DRILL ANY BRASS HEADS LOOKING FOR THE AIR FUEL MIXTURE. The air fuel mixture is the only adjustment you can make. It is located on the bottom side of the air intake, right behind the air filter box. It looks like a 1/4" flat metal plug. Do NOT drill this. There is no slot for a screw driver. There is a tool which is no more then a small piece of pipe that fits over this plug and you turn it in till seated, gently. Count the turns. Back out to 2 and a half turns, thats normal. Or if you no that you need more fuel injected, simply turn the screw OUT 1/4 or 1/2 turn and try it. GOOD LUCK (Its not hard)
There is no drilling to be done. Hope i didnt scew something up on mine......

remove the throttle off the bars , try and if stiff clean grip barrel etc and grease , remove the cables and pull the cable and if free refit if not replace cables !

Carbs need removing & the float jets cleaning, there is some debris stuck between the needle valve & the holder.
Easiest way to explain , it is like a toilet sistern float.

need a new regulater/rectifier

Sounds to me, like at least one of the cylinders is not fireing and the noise you are hearing is the cylinder attempting to come in, after a while does the popping stop?. Poss a new set of plugs will sort it out, it may even sort it self out with use

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Your cycle runs when you pull off one spark plug wire per cylinder. There are two spark plugs per cylinder and you did not remove both . Therefore you still have one spark plug on each cylinder firing to run the machine. Your motorcycle is also equipped with a side stand safety switch. Your bike will run on the side stand . But, if you put the bike in gear with the side stand down it is designed to turn off the motor. This is so you do not drive away with the stand down and loose control of the motorcycle on your first left hand turn. Get in the habit of putting your side stand up before putting the bike in gear and your problem is solved. Read your owners manual.