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20815 Toro Lawn Mower - Overview

Models starting with 20815

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Lawn Mower Spark Plug – Part Number: 796112S
$6.40
In Stock
Lawn Mower Spark Plug
★★★★★
★★★★★
(1)
Part #796112S
This is an OEM replacement part and is sold individually. Its propose is to deliver an electric current from an ignition system to the combustion chamber of a gas fueled engine. It will ignite the air fuel mixture by the spark. Spark Plugs will usually have to gapped to the manufactures specifications found in the owners manual. Over time a Spark Plug will become fouled because the air/fuel ratio may be set wrong,worn piston rings, carbon build up and other factors. It is better to replace a fouled spark plug, rather then trying to clean it.
Grommet – Part Number: 692189
$6.40
In Stock
Grommet
★★★★★
★★★★★
(1)
Part #692189
This OEM grommet, also called a 90-degree breather tube, is sold individually. Black in color and made of rubber, this is a 90-degree elbow for the crankcase breather tube of your mower engine. If you notice a reduction in the mower engine performance, and engine backfires, this part is likely to be in need of replacing. It can develop cracks due to fatigue, and our troubleshooting tip is to inspect this part if dark smoke is coming out of the exhaust, it is a telltale sign. This is an easy repair to make, and does not require any tools. The new grommet attaches on the breather tube fromt he crankcase to the carburetor.
Seal-oil – Part Number: 299819S
$7.47
In Stock
Seal-oil
Part #299819S
This OEM Oil Seal is an individually sold rubber part which is attached around the axis shaft on the crankcase housing to provide a proper seal. A broken seal will lead to a leak, and the part should be replaced. Installation is rated as "Medium" difficulty by customers, and will require a screwdriver, wrenchset and seal puller. Refer to your make, model and diagrams to ensure you've chosen the correct part. This model comes in black and grey.
Seal-o Ring – Part Number: 270344S
$6.40
In Stock
Seal-o Ring
Part #270344S
The O-Ring is a black rubber part, used to provide a seal between two pieces. It can be used in various locations on a variety of equipment. Installation is rate as "Easy" and will require a screw driver, pliers, socket set, and wrench set. If broken, damaged, or worn due to fatigue, you will have a leak and the part must be replaced. Refer to your make, model and diagrams to see if this is the right part for you.
Engine Dipstick Tube Seal – Part Number: 281370S
$10.97
In Stock
Engine Dipstick Tube Seal
★★★★★
★★★★★
(2)
Part #281370S
This item is a genuine replacement part that has been OEM sourced and is intended to be used with lawnmower engines from Briggs & Stratton and Toro. The rubber seal is used to prevent oil from leaking at the connection between the bottom of the oil fill tube and the crankcase. This item also allows the fill tube to firmly sit into the case. The dipstick tube seal if available as an individual replacement part.
Engine Spark Plug Boot – Part Number: 66538S
$6.40
In Stock
Engine Spark Plug Boot
Part #66538S
This spark plug boot is a genuine OEM Briggs & Stratton replacement designed to fit securely over the spark plug, protecting the connection from moisture, dirt, and debris. Its durable, elbow-style design helps ensure reliable ignition and easy installation, making it an ideal replacement when a cracked, loose, or worn boot causes hard starting, misfires, or inconsistent engine performance.
Nut-lock, Ni – Part Number: 3296-29
$6.55
In Stock
Nut-lock, Ni
Part #3296-29
The Ni Lock Nut (Nylock Nut) is a Silver, 5/16x18, individually sold metal nut. It can be adjusted and replaced using a wrench or socket and torque wrench to the manufacturer specfications, and is used to secure the sheer pin in place on the augur. These nuts are a one time use part due to their locking mechanism. You'll know the nut has broken because the augur will not spin, and this is when the part should be replaced. Customers found this to be an easy repair.
Engine Screw – Part Number: 692198
$8.01
In Stock
Engine Screw
Part #692198
This OEM engine screw is a genuine Briggs & Stratton replacement fastener designed for secure, vibration-resistant attachment of engine components in small gasoline engines and outdoor power equipment. Manufactured to exact factory specifications, it provides proper thread engagement and clamping force to help prevent loosening, reduce vibration, and maintain long-term engine reliability under operating stress. Built with durable, corrosion-resistant materials for extended service life, it is an ideal replacement when original screws are missing, stripped, or worn, helping ensure safe assembly, consistent performance, and proper engine operation.
Screw – Part Number: 691640
$6.40
In Stock
Screw
Part #691640
This is a genuine OEM sourced part which is specially designed for use with Briggs and Stratton engines commonly installed on lawn and garden equipment. It is a standard hardware which may have multiple applications, please make sure to refer to the appropriate diagrams of your model for the correct location and application of this hardware. Keep in mind this high-quality item is made of durable metal and is sold individually.
Gasket-cyl Hd – Part Number: 698717
$7.85
In Stock
Gasket-cyl Hd
Part #698717
This item is a genuine Briggs & Stratton part that has been sourced from the original manufacturer and is intended to be used with small engines. The gasket is used to seal the connection between the cylinder and the head. It is recommended to inspect and replace gaskets when servicing the motor to make certain that the part connections are seated correctly. This cylinder head gasket is priced as a single item.
Gasket-air Cleaner – Part Number: 271139S
$6.40
In Stock
Gasket-air Cleaner
Part #271139S
Screw – Part Number: 691061
$6.40
In Stock
Screw
Part #691061
This is an authentic OEM component from Briggs & Stratton. The magneto armature screw is compatible with many lawn and garden engines. The hardened metal screw helps to mount the magneto armature. A wrench is required for the removal and installation. The magneto armature screw is sold individually. It is recommended to refer to engine manual and diagrams for further instruction.

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PINION GEAR (L.H.) – Part Number: 20815
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PINION GEAR (L.H.)
This part number matches the current model number 20815
Part #20815

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Push mower leaked under neath.
1 person found this instruction helpful.
  • Raymond from Coalport, PA
  • Easy
  • 15 - 30 mins
  • Pliers, Socket set
Pulled the old seal out, replaced it with seal #391483S and so far looking good !
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