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My mower was running great, but then it acted like someone had pushed the choke on it, bogging down. Now it is doing it constantly. It is not revving to the rpms it used to run at. Would this be a dirty Carb??

Surprised nobody replied. I'm pretty sure you have a twin-cylinder engine on this model and it also sounds like you lost ignition to one of the cylinders. No Load, it should almost sound fine and still rev-up, but with the blades engaged, bogged down or even stall the engine.

Honda Tech said:

Surprised nobody replied. I'm pretty sure you have a twin-cylinder engine on this model and it also sounds like you lost ignition to one of the cylinders. No Load, it should almost sound fine and still rev-up, but with the blades engaged, bogged down or even stall the engine.

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My mower is having a similar problem. It does have a twin cylinder and I just posted about it. How is this fixed?

D&Khisandhers said:

My mower is having a similar problem. It does have a twin cylinder and I just posted about it. How is this fixed?

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Is it blowing blackish smoke out the exhaust?

mower king said:

Is it blowing blackish smoke out the exhaust?

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No

It did backfire once

D&Khisandhers said:

No

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it's probably not choking itself out then

So how do I resolve that?

D&Khisandhers said:

So how do I resolve that?

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There are just too many variables that can cause those problems...it's just real hard to fix over the keyboard.

What are the engine numbers? Model/Type/Code/Spec?
If it is running on one cylinder, you can confim it by pulling the spark plug boots one and then the other. There should be no change when you pull the plug boot from the dead cylinder and it will die when you pull the plug boot from the good cylinder. Some engine use two coils, one per cylinder. Replacing the associated coil should resolve the issue, but occassionally the issue is in the harness or other associated ignition components.

It’s motor is a B/S model 441777 typeC726-e1.

I've seen the carburetor on this model cause the same symptoms, but it would first be good to know if you pulled the plugs boots off each cylinder and note any changes.

Honda Tech said:

I've seen the carburetor on this model cause the same symptoms, but it would first be good to know if you pulled the plugs boots off each cylinder and note any changes.

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I haven’t tried your suggestion yet. I will try that tomorrow and let you know what happens.