How To Clean A Carburetor 09 250 Vstar

How to Clean a 5-Star Carburetor

by Richard Rowe

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Officially known as the DragStar overseas and the V-Star in North America, Yamaha's modernistic muscle bicycle hit a sweetness spot among cruiser bike enthusiasts. While the V-Star has never quite reached the cult status of its competitors from Milwaukee, it's certainly developed a potent post-obit among those who chose to forgo the orange-and-black. While the V-star's 75-degree V-twin hearkens back a time-tested thirty-plus years, even the best are somewhen going to need some routine carburetor cleaning and maintenance. No large bargain if y'all've ever seen the within of a carb, and still doable if y'all haven't.

Step 1

Remove the seat from your bike and shut the fuel petcock valve. Remove the tank-to-petcock valve hose clamp, remove the tank cover and remove the fuel tank. Remove the airbox and air ducting to betrayal the carburetor. Label and disconnect all the hoses, or take a few pictures in the process of disassembly so you tin get things back where they belong later. Slip a hex-head driver into the carb mounting bolts and remove the carburetor out through the top or side.

Step 2

Remove the throttle linkage either after y'all have the carburetor out or before you remove information technology. The V-Star came with several different engines, ranging from 250 cc to 1,100 cc, so infinite constraints will vary; the carb and accessories may come out through the top or side, depending upon the bike. Ready the carburetor in a box or on a flat, clean piece of work surface then that you don't lose any of the small-scale parts that might autumn off. Turn the carburetor over with the flat fuel feeds facing upwards and use a box-end wrench to remove the needle housings from the carb. Look inside the holes for junk in the carburetor.

Step 3

Remove the two float basin covers by unscrewing the corner screws with a hex-head driver. Exist very careful not to strip the spiral heads. Wiggle the bladder bowl covers loose and remove them. Remove the drain screws from the bosses on the float bowl covers. You've at present exposed the main float.

Step 4

Pull the bladder pivot pin out and gently pull the float out of the carb. You lot'll run into the needle attached to the float; examine it for cracks or bends. Identify the jets; they're in the recess where the float needle went in. Unscrew the jets with a screwdriver. You'll encounter the holes around the bottom cylinder of the jet. Spray your carb and choke cleaner into the centre of the jet and through the holes to clean them out. Set the jet aside. If the holes won't clear, soak the jet in carb cleaner for 10 minutes and try once more.

Pace 5

Gently lock a pair of vice-grips around the large brass tube in the eye (the 2nd jet) and turn information technology gently counterclockwise to remove it. Blow some carb cleaner through information technology or soak it as yous did the first. Loosen the screw in the upper right-paw corner of the float basin and remove information technology; this is the in-bowl fuel filter. Clean or replace as necessary. Repeat with the contumely screw in the acme of the bowl to expose the needle within your carb body. Clean as necessary.

Footstep 6

Flip the carb over so that the cup-shaped diaphragms are facing upwardly. Remove the iv diaphragm screws, beingness very conscientious non to strip them. Once the cap is loose, the spring volition push information technology up. Remove the spring and slowly lift the flexible, blackness diaphragm from the housing. Inspect it for damage and clean as necessary. Look down into the carb trunk, and spray some cleaner into the diaphragm's jet-hole. You may likewise opt to soak the carb in cleaner overnight or to clean the holes out manually with a fix of brushes or a guitar string.

Pace 7

Repeat with all of the jet holes and spray plenty of carb cleaner. Once yous've cleaned the carb out, dry and clean the expanse thoroughly to remove any of the cleaner. The safety diaphragm is susceptible to damage from solvent-based cleaners. Reassemble the diaphragm mechanism in the opposite order or removal. Tighten the embrace screws hand-tight with a hand driver. About 1/four-plow past snug should suffice.

Examination the throttle blade mechanism to make sure that it's all the same functioning. At this point information technology'south just reassembling the carb in the reverse order of disassembly, tightening all fasteners merely by snug. Once you lot go the bowl machinery back together, test for motion before yous install the bladder basin covers. make clean everything as necessary equally y'all put the carb dorsum together.

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