Baron Air & Fuel_BIG AIR KIT PINSTRIPE, BLACK Yamaha V-Star 650 - Manual (Page 4)

Page: 4 BA-2410-00
NEEDLE/JET KIT - Yamaha XV650 V-Star 650 1998-2010
8. Remove the OEM Main Jet and Pilot Jet, and replace them with the appropriate Main and Pilot Jets as specified.
See Chart at top of box for proper jet sizes and needle slot/clip position.
9. Thoroughly clean the inside of the float bowl prior to reinstalling it.
10. Reassemble the carburetor by reversing the order of step #1 through step #9. Use the new cap head Allen screws in
place of the OEM Phillips head screws.
11. Repeat step #1 through step #10 for the other carburetor.
12. Locate the fuel mixture plug on each carburetor; it will either be a screw head or a brass plug. If it is a screw head,
skip to step #12c. If you see a brass plug with a small hole in the center, proceed as follows:
a. With a 5/32" drill bit, carefully and slowly drill through the fuel mixture plug for each carburetor.
CAUTION: The fuel mixture screw is located directly beneath this plug. Be prepared to stop the drill and remove the
bit the instant you break through the plug.
b. Insert a self-tapping sheet metal screw into the drilled hole and remove the plug.
c. With air/fuel screw now accessible, use a flat blade screwdriver to turn the screw clockwise until it seats, then
carefully turn it counter-clockwise 3 turns. Refer to step #15 for assistance in fine-tuning the setting of the air/fuel
adjustment screw.
13. FILTER INSTALLATION:
If you are maintaining the stock airbox reinstall the OEM air filter assembly now.
If you are installing a Baron external BAK, filter refer to their instructions.
If you are installing a STEALTH BIG AIR KIT refer to their instructions.
14. Check all vent lines, fuel lines, and linkage for any obstructions or blockage. Note: It is important to verify
proper throttle operation before starting the engine.
15. The adjusting procedure requires the use of carburetor sticks or a set of vacuum gauges. The carburetors
must be synchronized in order to achieve optimum performance. This procedure should be performed by a
qualified Yamaha repair technician.
16. Check the engine at idle speed for any popping or back firing. If popping is occurring at idle: Verify the
air/fuel adjustment screw has been set to the recommended starting position as described in above step, then fine
tune + or from there until popping stops or improves.(See Tuning note)
TUNING NOTE: Proper carburetor adjusting would include balancing which does requires the use of carburetor
sticks or a set of vacuum gauges. The carburetors must be synchronized in order to achieve optimum
performance. This procedure should be performed by a qualified Yamaha repair technician.
For best results, we recommend the engine be adjusted on an Exhaust Gas Analyzer (EGA) to a CO reading
between 3% and 4%. Please bear in mind this percentage depends on various factors including: Altitude,
Humidity, Temperature, Air Pressure, etc.
CAUTION: The adjusting procedure is critical. Correct carbon monoxide settings are key to maximum
performance. Do not overlook this step!
Contact us if you have any questions regarding this installation.
Our install guides provide a basic outline on the proper installation of our products. Further tuning and/or
fitment may be required. Barons bears no responsibility on installation costs associated with this product.
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