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121Hsv3 Parts

Some parts shown may not be for your model. To see parts for your model only, select it from "Matching Model Numbers" list on the left.

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Lawn Mower Engine Stop Switch
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 692310

Engine won't shut off when you turn the key? Replace your lawn mower's stop switch to restore safe engine control. Simple safety repair.

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$6.65
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$7.85
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$1.20

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Usually ships within 4 - 14 days

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Engine Fuel Line
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 791766

Mower won't start or runs poorly? Cracked or leaking fuel lines prevent proper fuel delivery. Simple 15-minute DIY repair restores engine performance.

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$9.95
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$11.84
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$1.89

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Engine Piston Pin
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 298909

Replace a worn, damaged, or missing piston pin in your engine. This small pin connects the piston to the connecting rod and requires replacement when bent or broken.

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$10.95
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$12.03
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$1.08

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Tube-Dipstick
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 495265

 

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$16.22
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$18.33
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$2.11

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Pin-Piston/Std
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 499423

 

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$10.95
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$12.27
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$1.32

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Ring Set-Std
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 499425

 

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$21.95
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$24.44
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$2.49

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Engine Dipstick
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 499621

Engine dipstick for checking oil levels. Replace if cracked, bent, or missing seal to prevent leaks and ensure accurate readings. Verify fit with model number.

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$15.95
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$18.12
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$2.17

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Chainsaw Engine Breather Assembly
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 590395

Breather assembly for chainsaw and lawn equipment engines. Vents excess air from the crankcase. Replace if cracked, broken, or worn to maintain proper engine ventilation.

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$14.38
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$16.10
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$1.72

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Chainsaw Engine Piston Ring Set
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 590402

Piston ring set for chainsaw and small engines. Replace when you notice loss of compression, excessive oil consumption, or during engine rebuilds.

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$32.78
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$36.71
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$3.93

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Ring Set-020
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 590403

 

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$32.78
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$36.06
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$3.28

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Engine Piston Assembly
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 590404

Replace a worn piston assembly causing low compression, hard starting, or power loss in your small engine. Direct fit for common lawn and garden engines.

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$46.95
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$51.97
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$5.02

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Piston Assembly-020
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 590405

 

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$75.95
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$84.44
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$8.49

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Bushing-Valve Guide
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 63709

 

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$14.38
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$15.87
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$1.49

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Screw
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 690661

This screw is designed to be used on all sorts of lawn and garden equipment. The metal screw is durable and attaches to the muff guard bracket to keep it in place and stable while the equipment is being used. This screw can become damaged through overuse or wear and tear. It can also break or become stripped, which will require it to be replaced.Visually inspecting the area with the muff guard bracket is connected to the rest of the equipment will give information about whether the screw is broken or damaged. The screws can also be cleaned to be more visible so small problems are easier to pick up on. Sometimes the screws can become loose, which is another situation where a replacement is needed. Simply use a screwdriver to take out the old screw and replace it with a new one.This screw is a genuine OEM replacement part that is directly sourced from the manufacturer. It comes as an individual part. The screw can be used on snowblowers, lawnmowers, lawn tractors, tillers, pressure washers, leaf blowers, edgers, generators, wood chippers, and log splitters made by MasterCut, Simplicity, MTD, Snapper, Lawn-Boy, Wheel Horse, Cub Cadet, Toro, Craftsman, and Briggs & Stratton.

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$6.95
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$7.78
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$0.83

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Engine Mounting Screw
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 690664

Replacement mounting screw for small engines. Secures engine components and covers. Order a new screw if yours is stripped, missing, or damaged.

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$8.95
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$9.11
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$0.16

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Clamp-Casing
Genuine Midwest Engine part
By: Midwest Engine
Part Number: 690798

 

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$8.95
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$8.96
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$0.01

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