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Hello Everyone,
I have a Bolens ride on Mower. When I have the blades engaged and driving around if I hit a bump in the grass, I have some low spots, or am on a small incline or decline the mower starts stalling. As long as I am on flat ground no issue. Only happens when the blades are engaged. I recently changed the gas filter. While it's stalling if I disengage the blades it recovers. Any ideas?

Sounds like the carb is not getting enough fuel while the blades are engaged. I would start my troubleshooting by cleaning and rebuilding the carb, making sure that the float level is set properly.

Sounds like a layer of water sitting in the bottom of the carb, jostling things sends a slurp of water up into the engine.

Loosen the nut or solenoid on the bottom of the carb and drain out the carb for a bit. Look for water/gunk in what dribbles out.

I've never worked on a riding on lawn mower engine excpet replace the fule line. Is that hard to do. Should I watch Youtube videos? I am Audio Visual technical but not engines. But I will try.

Is this the Carb?

Can you tell me what this cylinder part is?

anthony7501 said:

Is this the Carb?

View attachment 52415

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Yes it is the carburetor. The fuel solenoid thingy with the wire is what you need to remove. It take a 1/2" thinned open end wrench to remove it. Also I not mistaken that fuel filter is on backwards. It was meant about water in the carb fuel, same thing goes for the fuel tank.

anthony7501 said:

Can you tell me what this cylinder part is?


View attachment 52416

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It is called a electric starter. It is what you using to crank and start the engine. From the image it also appears that you have oil leak.

OK, I really can't bring it to a place. I don't have a big enough vehicle. I will start with the Carb, check on the fuel filter. And I am guessing clean the engine from all the oil. Then try to find the leak. I may be back for some more help.

anthony7501 said:

OK, I really can't bring it to a place. I don't have a big enough vehicle. I will start with the Carb, check on the fuel filter. And I am guessing clean the engine from all the oil. Then try to find the leak. I may be back for some more help.

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You will find these photo instructions very helpful outdoor power Equipment site

bertsmobile1 said:

You will find these photo instructions very helpful outdoor power Equipment site

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Thank you!

Replace that aquarium hose with real fuel line made for gasoline. Get proper clamps for the same hose on each end. Fires are no good.

slomo

slomo said:

Replace that aquarium hose with real fuel line made for gasoline. Get proper clamps for the same hose on each end. Fires are no good.

slomo

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That is the hose that came with it when I bought it used from someone. I will replace the hose also. Thanks

anthony7501 said:

That is the hose that came with it when I bought it used from someone. I will replace the hose also. Thanks

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I replaced the auqarium fuel line with a real fuel line as you suggested and put the filter going the right way, I can't figure out how to get the bottom cup off. Any ideas?

that's an anti afterfire solenoid, you'll need a 1/2" wrench to get it off, but you'll need to grind it down so it will fit in that small space between the solenoid and carb bowl.
There have been a few times i was able to spin one off by hand BUT they were FEW and FAR between

Scrubcadet10 said:

that's an anti afterfire solenoid, you'll need a 1/2" wrench to get it off, but you'll need to grind it down so it will fit in that small space between the solenoid and carb bowl.
There have been a few times i was able to spin one off by hand BUT they were FEW and FAR between

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OK thank you!

Replace the filter as turning it around will allow captured dirt to enter the carb. Also I think checking the seat switch if connected would help since disengaging pto makes a difference and inclines and or cutting sideways on hills would cause you to lean thereby possibly comiing off the seat enough to kill engine. Just my 2 cents thanks guys.

anthony7501 said:

I replaced the auqarium fuel line with a real fuel line as you suggested and put the filter going the right way, I can't figure out how to get the bottom cup off. Any ideas?View attachment 52463

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If you reversed the old filter, you have set yourself up to have the dirt trapped in it dumped into your carburetor next time you start it. Best to install new one, and to keep a spare. Always a good idea to replace it at in springtime when readying mower for cutting season.

The picture of the fuel filter shows almost no gas in it. Is that the correct fuel line? Any air leak will prevent proper fuel delivery.

gsim said:

If you reversed the old filter, you have set yourself up to have the dirt trapped in it dumped into your carburetor next time you start it. Best to install new one, and to keep a spare. Always a good idea to replace it at in springtime when readying mower for cutting season.

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If by 'bottom cup' you mean carb float chamber, they are usually held in place by a nut. Some have anti backfire solenoid beneath, and that has to come off first, then float bowl can be removed via stop nut on its bottom.

Also could be line in tank is cracked or broken as that would beaffected by incline but shutting off pto would not fix it. Jump the seat switch then try it to eliminate the switch.