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Kawasaki Ninja Motorcycle Carb Restoration with an Ultrasonic Cleaner

With over 20 years of existence, the Kawasaki Ninja motorcycle has proven its worth to the motorcycle market. This bike offers a much stronger midrange as well as precise throttle, control and feel. A light to handle machine, it offers control and composure whilst hand braking. Since the Ninja has an aggressive and macho look to it, great care must be observed in maintaining its parts.

A clean, well-tuned carburetor is a key factor in the performance of your Kawasaki Ninja Motorcycle and nothing makes cleaning carburetors faster, safer and easier than an ultrasonic cleaner. Whether you operate a Kawasaki Ninja Motorcycle service shop or do it yourself, you’ll be amazed at just how thorough an ultrasonic cleaner can be in removing varnish, grease, oil and other contaminants from one of the most intricate assemblies on your Kawasaki Ninja Motorcycle.

Here you will learn:

  • How an Ultrasonic Carburetor Cleaner Works
  • How to Select and Set Up your Ultrasonic Cleaner
  • How to Remove, Clean and Reinstall your Kawasaki Ninja motorcycle carburetor

How Ultrasonic Parts Cleaners Work on your Kawasaki Ninja Motorcycle Carburetor

Ultrasonic cleaners are used in a wide range of applications to remove virtually any soil or contamination by using the power of cavitation action. This is the term used to describe the implosion of billions of minute bubbles contacting carb parts being cleaned. The bubbles are created by generator-powered ultrasonic transducers bonded to an ultrasonic cleaning tank and typically operate at an ultrasonic frequency of 37 to 42 kHz (37,000 to 42,000 cycles per second).

When the bubbles implode contaminants are quickly and safely blasted away from wetted surfaces without damaging delicate carb parts. So tiny are the bubbles that they penetrate minute cracks, crevices and blind holes impossible to reach by hand scrubbing using conventional parts washers or aerosol sprays The ultrasonic parts washer will complete the job in less than an hour, meanwhile freeing you up to attend to other tasks. And it will do it in an environmentally friendly manner because the ultrasonic carburetor cleaning formula is a biodegradable concentrate that minimizes disposal problems.

How to Select and Set Up your Kawasaki Ninja Motorcycle Ultrasonic Carb Cleaner

Ultrasonic carb cleaners come in a variety of sizes from bench top units to a floor-mounted industrial ultrasonic cleaning machine, so you can select any size you need. Our most popular 1½ gallon models for cleaning one carburetor at a time are the TOV150-6L and EH150EL. Select an ultrasonic carb cleaner equipped with a heater to improve the ultrasonic carburetor cleaning process.

Whatever the model and size ultrasonic cleaner from you use there are steps to take before cleaning begins.

  1. Fill the ultrasonic carb cleaner tank to the fill line (or approximately 2/3 full) with ultrasonic cleaner solution diluted per manufacturer’s recommendations.
  2. Turn on the ultrasonic cleaner, set the heater to approximately 70°C, and operate the ultrasound for about 30 minutes to drive off cavitation inhibiting entrained air. Degassing is complete when bubbles stop coming to the surface and must be performed every time the tank is filled with fresh cleaning solution.

How to Remove, Clean and Reinstall your Kawasaki Ninja Motorcycle Carburetor

Step 1: Removing the Carburetor

To start, you will have to unlock the seat release mechanism with the ignition key. Remove the seat from your Kawasaki Ninja motorcycle. It is now time to unscrew the bolts from both side panels located below the rider’s seating area. This can be done with the help of a 10mm socket and a socket wrench. Once that is done, you can now pull the side panels away from the frame.

The next important step is to turn your Kawasaki Ninja’s gas tank’s fuel valve to the “On” position. By doing so, you are stopping the fuel from going into the carburetors. This is an important step since you don’t want to continue “dirtying” up your carburetor. There are two bolts found on the base of the gas tank that need to be removed using a socket. Once this is done, you can now lift the rear of the tank and easily pull the fuel line from the fuel valve. Pull the gas tank off.

Next, the screws from the middle and lower panels need to be removed. Pull the panels away from the motor and frame of your Kawasaki Ninja motorcycle. Drain the fuel from your carburetor. After this is done, it is time to loosen the eight clamps securing the carburetor to the airbox as well as the motor. You will then need to push the carb out of the motor’s intake flanges. After this is complete, you can pull the carburetors out easily.

You now hold in your hand, your Kawasaki Ninja carburetor.

Congratulations! You have successfully removed your Kawasaki Ninja carb from your motorcycle! You may now proceed with the next step.

Step 2: Cleaning the Carburetor

Although you can clean your carburetor without any disassembly you will achieve the most thorough cleaning with partial disassembly to allow the solution into the float chamber. Remember that only surfaces that are wetted by the cleaning solution will be cleaned. Fine mesh baskets can be used to hold very small parts.

Set the thermostat to 70°C. While the solution is heating, place your carburetor parts in the basket taking care that they do not touch each other. Once the operating temperature is reached lower the basket into the cleaning solution and set the timer for 40 minutes. Cleaning time depends on the condition of the carburetor and may have to be adjusted.

At the end of the cycle remove the components from the bath. If they are not clean replace them in the bath until the cleaning is complete. Then rinse them in fresh water to remove all traces of the cleaning solution and allow them to dry.

Safety note: DO NOT reach into an operating ultrasonic bath. Instead remove the basket if you want to inspect or rearrange the parts.

Step 3: Reinstalling the Carburetor

First, insert your Kawasaki Ninja carburetor back into the motor’s intake flanges of your motorcycle. Once your carb is nice and snug, it is time to secure it to the assembly again. Tighten the eight clamps holding the carburetor to the airbox and the motor. Once done, it is now time to return the panels for your Kawasaki Ninja’s motor and frame. Secure the screws on these middle and lower panels to make sure that they stay in place.

You may now return the gas tank. Lift the rear of the tank to connect the fuel line to the fuel valve once again. Secure the two bolts holding down the gas tank. You can now turn your Kawasaki Ninja’s gas tank’s fuel valve to the “Off” position. This is done so that the fuel begins to enter the carburetor.

Return the side panels located just below the driver’s seating area. You can secure the bolts using a 100mm socket and socket wrench. Once these are secured, you may now return the seat to your Kawasaki Ninja. Make sure that you lock the seat release with the ignition key so that you won’t fall off your bike!

Admire the piece of work you just put back together.

Voila! Start the engine, and your Kawasaki Ninja Motorcycle should be good to go.

More Operating Tips

Oils that rise to the surface of the water bath sonicator should be skimmed off and disposed of properly. When the solution becomes discolored or cleaning time takes longer it is time to replace it. Drain the tank and dispose of the spent solution according to local regulations. Take the time to remove sludge that settled to the bottom of the tank. Clean the tank using a cleaning process recommended by the manufacturer.

Questions: Contact the iUltrasonic ultrasonic cleaning experts at 973 821-4400

Disclaimer: This advice is not provided by a licensed mechanic. Follow at your own risk. We assume no liability for any damages caused by following the advice in this article.


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