Although it was primarily designed for low production cost, the CVK has a track history of good performance, easy maintenance and simple tuning.Adjusting Tool The hardest thing about tuning the CVK carb on a Kawasaki is simply getting to ittheres only about a 34-inch clearance between the mixture-adjustment screw and the starter motor.
Keihin Cvk Carburetor Parts Diagram Driver Into AThere are no off-the-shelf tools to help you, but you can improvise by placing a high-quality 14-inch wide flat-head screwdriver into a vise and bending the tip.You may need to heat the metal shaft to red-hot with a butane torch as a precaution against breaking it.Factory Tuning Theres a simple method If you need a baseline for factory tuning. Gently screw the pilot or idle mixture screw until it just begins to bottom out. Once the screw is tightened, back it out of the carb by one and 78 turns to the factory position. Off-Road Tuning Follow the same procedure for setting the factory tune, but back the screw out by 2-12 turns. This will typically yield the best throttle response off-road, but may cause bogging on the pavement if youre in too low of a gear. Idle Drop Method Tune your carb to the off-road position as above, and take the bike out for a short ride to warm the engine. Back at the garage, set the idle speed to between 1,300 and 1,500 RPM, turn the idle screw in until the engine begins to stumble, then back it out until you find the highest idle speed. This should coincide with the highest engine vacuum to yield peak engine efficiency. Exhaust Gas Analyzers If you want the highest tuning level, youll need an exhaust gas analyzer. An oxygen sensor voltage of.49 volts will give you an almost perfect 14.7:1 airfuel ratio; an increase or decrease of 0.1 volts will correspond to a 0.5:1 change in airfuel ratio. References 3geez.com: CVK Tuning Discussion About the Author This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Works, contact us. Photo Credits Hemera TechnologiesPhotoObjects.netGetty Images More Articles How to Adjust the Idle on a Monte Carlo How to Adjust the Idle Screws on a. How to Tune a Demon Carb What Size Carburetor Do I Need for a. How to Adjust a Dodge Carburetor How to Limit Speed on a Childs ATV How to Adjust the Carburetor on a. How to Tune a Holley 2300 How to Adjust the Mixture on a Carter. Leaf Group Media About Us Accessibility Terms of Use Privacy Policy Copyright Policy Manage Preferences.
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