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7800543 Simplicity Lawn Mower - Overview
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$9.69
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Engine Oil Seal
Part #795387
This OEM Seal-Oil (PTO Side), also called the Oil Seal, is a Black, Nitrile Rubber, 2/14 O.D., individually sold part which is installed using a Seal Puller. Customers rate the installation difficulty as Medium.
This part provides a seal around the crank shaft and engine block. When installing onto the engine block around the crank shaf...Read moret, use something that makes contact around the entire seal, like a large socket or pipe, and tap into place evenly, ensuring that the housing is clean and dry. If the part is broken, likely due to fatigue, there will be leaking oil, and this part should be replaced using the model number on the original part to confirm it is the right fit for your model.
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$8.09
In Stock
Engine Oil Seal
Part #391086S
The Oil Seal is a manufacturer-approved rubber part which provides a seal between the crankcase and crankshaft by attaching around the axle shaft on the crankhouse housing. Installation is rated as "Medium" difficulty and requires a screw driver, wrench set and seal puller. A broken seal will cause a leak, and the part must be replaced. R...Read moreefer to your make, model and diagram to ensure you're choosing the right part. This part comes in black and gray.
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$7.08
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Lawn Mower Hex Head Washer Screw
Part #2828635SM
This is a genuine Murray replacement part, it is sold individually. It is commonly used in lawn tractors, and is used in various places in the compatible models listed below. It is self tapping, with a 9/16 hex head. Made of metal.
$30.09
In Stock
Engine Cylinder Head Gasket
Part #693997
This is a replacement cylinder head gasket for your small engine. The gasket is approximately 5 inches in length and 5 inches in width at its longest and widest points. The gasket creates a seal, and the seal allows combustion to occur, making your engine run at peak performance. If the gasket is damaged or coming apart, you may notice a ...Read moredecrease in the power and performance of your engine. When you remove the old gasket, be sure that the surface you are attaching the new one to is completely clean, so the seal will be effective. This part is sold individually and it is a genuine OEM part.
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$10.75
In Stock
Lawn Mower Wing Knob
Part #703065
This 5/16-18 wing knob is sold individually. It is a plastic part, black in color, that works on a variety of equipment. Its general function is to allow you to quickly loosen, remove, or fold down things such as handles. If it no longer loosens or tightens, it may be broken or damaged due to fatigue and wear.
Replacing this part is an easy repair that does not require any tools.
$17.25
In Stock
Engine Oil Filter
Part #696854
This genuine OEM oil filter helps to remove harmful contaminants from engine oil. It is designed for a variety of Engines. It is sold Individually. This part maintains optimum performance of your engine in accordance with applicable EPA emissions regulations. It is recommended to replace an Oil Filter at least once a season.
$53.18
In Stock
Crankcase Gasket With Bolts
Part #594195
This genuine crankcase gasket is used on small lawn and garden engines. Its purpose is to make an air tight seal so that no air/oil leakage occurs. Over time this gasket will deteriorate and will need to be replaced. It is made out of composite material and it is sold individually. To complete this repair you will need a wrench. Includes ...Read moreone (1) gasket and ten (10) bolts. This will need to be tightened with torque to 300 inch pounds.
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$10.65
In Stock
Bearing, Ball 11/16x1
Part #1705897SM
This ball bearing is sourced from the original equipment manufacturer and can be used in a variety of outdoor equipment. It has an inner diameter of 11/16 inches. The ball bearing provides support for the rotating parts in your equipment and reduces the amount of friction they are subject to during use. If the bearing is not adequately lu...Read morebricated or has worn down, you may hear grinding or squeaking from your equipment and notice excessive vibration when in use. It is important to address this issue promptly as a faulty ball bearing can potentially damage the parts located near it. To replace the ball bearing, use a pry bar or bearing puller to pry it out of its housing. Clean the housing thoroughly and press your new ball bearing in position. Note that when pressing the ball bearing into place, apply force only to the outer portion of the bearing.
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$6.40
In Stock
Seal-o Ring
Part #691917
The Seal-O Ring, also known as the gasket, is red in color, made of rubber, and is an OEM part that requires some skill to replace. This part is designed to create a seal between the carburator and manifold, to prevent air from entering. If your engine loses power, creates a hissing noise, or if the gasket appears damaged or your engine r...Read moreunning improperly it may be time to replace the part.
If you run the engine and spray the outside of the carburator with soapy water, you can test whether or not the gasket is leaking by listening to the sounds produced. If the sound smooths out then you've found your leaky gasket. Damage may occur over time, especially if the part dries out, and make the part appear stretched or worn out.
When making this medium-difficulty repair, make sure the new gasket is fitted properly between the carburetor and intake manifold.
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$6.40
In Stock
Key-flywheel
Part #222698S
This is a Genuine OEM replacement part used on a variety of Lawn and Garden equipment. The key helps to secure Flywheel in place. This is a Metal Key and it is Sold Individually. You would need Pliers to replace this item.
$15.13
In Stock
Filter-oil
Part #492932S
This short-style engine oil filter is designed to remove harmful contaminants from the oil while maintaining proper lubrication in pressure-lubricated small engines. Built with high-efficiency filtration media and internal safety features to support consistent oil flow, it helps reduce engine wear and protect internal components. Ideal fo...Read morer routine maintenance, it supports reliable performance and helps extend engine life during regular operation.
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$6.40
In Stock
Gasket-exhaust
Part #690970
This is a genuine OEM sourced replacement exhaust gasket. It is specially made for use with Briggs and Stratton engines commonly used on Toro lawn and garden equipment. Its purpose is to provide an air-tight seal between the carburetor and the exhaust tube. Over time this gasket will deteriorate requiring replacement. Please note, this co...Read moremposite gasket is sold individually. To replace this part you will need a wrench.
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Common Symptoms of the 7800543
How this model fails, and the parts that fix it.
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governor not working
18 of 30 people
found this instruction helpful.
Had to pull the engine off the rider mower. Drained the oil took shield off the flywheel. Set it upside down on a 5 gal bucket. Took a 7/16 hand wrench to remove governor lever from bottom of engine. Left it in its location. Pulled 10 1/2 " bolts. Split engine case. Found the old governor had broke into pieces. Had to use a magnet t
... Read more
o remove all the pieces. Removed the small clip and removed gear. Lubed shaft slid new on put new clip on. Lined governor weights with center piece tapped it in place very lightly. Cleaned gasket flanges pulled the shaft seal. Used the old seal as a seal driver. When putting the cover back on make sure the seal dont roll out. Take a mini screwdriver and tuck it in around shaft. Put bolts back in and tighten like instructions
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