Johnson Outboard Carburetor Removal: Learn Step by Step

Is your boat engine, Johnson Outboard, not starting, no matter how gently you press the throttle? Facing difficulties at high-speed maneuvering? Is exhaust emitting heavily polluted smoke? 

Trust me; the time has come to remove and clean the carburetor of your Johnson Outboard boat engine. Well, if I am not wrong, now you are looking for the Johnson Outboard carburetor removal process, right?

Okay, breathe a sigh of relief. You have come to exactly the right place. Simply put, you must follow a few steps to get access to the carburetor. Once you get access, remove all the necessary engine-carburetor connection bolts and remove the carburetor.

I know you are eager to know those processes. So, without any further ado, hop on, and let’s learn the process step-by-step.

Tools Required for the Removal Process

If you don’t want to cause any damage to the other parts of your engine, you must require a few necessary tools to perform the removal process precisely.

Required Tools-

  • Bolt Opener Machine
  • A set of a punch tool
  • Flat Head Screwdriver
  • 8 mm socket
  • 12 mm wrench
  • An adjustable wrench
  • A Set of Allen Screwdrivers

Carburetor Removal Process

Okay, a little reminder; There are a few non-negotiable options you must follow.

  • Read the instructions and guidance and
  • Know every detail
  • Follow the steps accurately, as mentioned.

Step 1: Detaching the Engine from the Boat

At the very first, you have to detach the Johnson Outboard engine from the boat. This step will facilitate the convenience of your carburetor removal process.

  • Disconnect the shift throttle cable from the engine using the accurately sized wrench or adjustable wrench
  • Disconnect the throttle cable by unclipping the adjustable clip.
  • Then, totally unscrew the bolts on both sides of the steering rod.
  • Now, disconnect the steering cable from the engine by unscrewing the connecting bolt with an accurately-sized wrench.
  • After that, carefully pull out the steering rod from one side.
  • Now, locate all the bolts and screws mounting the engine with the boat and unscrew them.
  • Finally, take out the engine from the boat and place it carefully in your workshop.

Note: This step is an optional choice for you. If you have basic knowledge about the engine, you can perform the removal process without detaching the engine from the boat.

But if you have exactly zero knowledge about the engine, then I would suggest following this step as well.

For a Better Understanding, Take a Look At This Video!

Step 2: Removing the Cowling Cover of the Engine

At this stage, you must remove the engine’s cowling cover. In many models, you may find removing the cowling cover very easy. Only unhooking becomes sufficient to remove.

But, in several other models’ engines, you will see that the cowling cover is connected with screws. Here, you have to unscrew all the screws carefully with the bolt removal machine. 

After that, carefully take out the cowling cover to access the main engine.

Step 3: Capture the Picture of the Engine

Once you have removed the cowling cover, take a few clear and detailed pictures of the engine from different angles.

It’s basically a precautionary and non-mandatory step before dismantling the engine. It’s actually up to you to follow this step. But, if you somehow forget the proper orientation of the parts when assembling, those photographs will definitely come to your help.

Step 4: Removing the Air Muffler

Once the cover is opened, you will find an air muffler connected with 8 to 12 bolts, covering the frontal side of the engine.

Now, you must loosen all the bolts with the bolt removal machine at this stage. Take out all the bolts and finally detach the air muffler from the engine. Now the faceplate is exposed and accessible.

Step 5: Detach the Gas Acceleration and Gear Shifting Cable

You need to follow this step; if you didn’t follow step 1.

Okay, in this step, you basically need to detach the gas acceleration cable and the gear-shifting cable from the engine.

Loosen the bolt to the gear-shifting cable with an accurately-sized wrench or bolt removal machine carefully and take out the cable. After that, in the same fashion, loosen the bolt of the gas acceleration cable and also disconnect the cable from the engine.

There is no alternative to being careful in this step. Especially when you are detaching the gear shifting cable, maintain maximum precaution to avoid damage to the cable.

Step 6: Detaching the Enrichment Choke

After detaching the gas acceleration and gear-shifting cable, it’s necessary to remove the enrichment choke.

The enrichment choke is attached to the machine with a bolt connected to a wire. So, you just have to loosen and take out the entire bolt. After this, the enrichment choke will come out.

You also have to perform this stage carefully to avoid damage.

Step 7: Removing the Faceplate

Once you are done with all the steps mentioned above, you will get clear access to all the faceplate bolts. Now, try to locate all the bolts and screws. Besides you will also find a few screws connected to the fuel pump.

Loosen all the bolts and unscrew all the screws with a cautious hand so that you don’t cause any damage to the faceplate. Now, while detaching the faceplate, you will also find a hose at the downside of the faceplate. Just disconnect the hose normally. Finally, remove the faceplate delicately.

Step 8: Removing the Carburetor

After removing the faceplate, you can see the carburetor connected to the engine with allen bolts. Now, take the right allen screwdriver and loosen all the bolts carefully. After removing all the bolts, just take out the carburetor attentively and safely.

Boom!! You have successfully removed the carburetor of the Johnson Outboard engine without causing any damage to the other parts.

Basically, dismantling the engine by following the above-mentioned process will give you access to the carburetor. That is why you need to perform each step attentively.

Frequently Asked Questions (FAQs)

How do you clean the outboard carburetor without removing it?

A carburetor cleaner is the best way to clean the carburetor without separating them. To clean an outboard motor and carburetor, you need to add the cleaner to a full gas tank, run the motor for a while, and check the results. Rebuild your carburetor if it is required.

What happens if the carburetor is not cleaned?

If the carburetor isn’t cleaned, too much dirt will build up in it, and the right mix of air and fuel won’t get through to the engine. Actually, it will make the engine turn over, but it won’t catch or start. Besides, the engine will start emitting black smoke.

Where is the carburetor adjustment screw?

Actually, you will find two screws on the front of the carburetor. Those are basically used for the adjustment of air and fuel. In general, they are in front of the carburetor. Most of the time, these look like flat-head screws, and you can turn them with a screwdriver to change how much fuel and air are mixed in the carburetor.

Final Insight

Okay, that was all. I believe, now you know the johnson outboard carburetor removal process precisely.

Suppose anytime it comes to changing, replacing, or cleaning the carburetor. In that case, I am pretty sure you can perform the task with great precision only because you have learned the carburetor removal process step by step.

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