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9055852-1-M-Briggs and Stratton-66538S-Engine Spark Plug Boot
Part Location Diagram of 66538S Briggs and Stratton Engine Spark Plug Boot
See part D-635 in the diagram
9055852-1-S-Briggs and Stratton-66538S-Engine Spark Plug Boot 360 view
( Grid squares measure 1x1 inch )
9055852-1-S-Briggs and Stratton-66538S-Engine Spark Plug Boot 9055852-2-S-Briggs and Stratton-66538S-Engine Spark Plug Boot 9055852-1-S-Briggs and Stratton-66538S-Engine Spark Plug Boot 360 view
Part Location Diagram of 66538S Briggs and Stratton Engine Spark Plug Boot

Engine Spark Plug Boot 66538S

Manufactured by:
Briggs and Stratton
ERP Number:
ERP9055852
Part Number:
66538S
Original Equipment Manufacturer ?
  Works with your model  521244913!
$6.19
In Stock
Delivers in 3-5 Business Days!

Easy 

Less than 15 mins 

(1 rated repair) ?
  Works with your model   521244913!

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Frequently Purchased Together Troubleshooting Repair Instructions Model Cross Reference

Frequently Purchased Together

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Troubleshooting

This part works with the following brands:
  • Briggs and Stratton
  • Toro
  • Craftsman
  • Simplicity
  • Lawn Boy
  • MTD
  • Poulan
  • Snapper
  • Murray
  • Jonsered
This part works with the following products:
  • Engine
  • Lawn Mower
  • Lawn Tractor
  • Snow Blower
  • Generator
  • Pressure Washer
  • Leaf Blower / Vacuum
Part# 66538S replaces these:
66538, 66538S, T66538,

Customer Repair Instructions

All our customer repair instructions are solicited directly from other customers just like you who have purchased and replaced this exact part.

Easy 

Less than 15 mins 

(1 rated repair) ?
  • 1
Sort by:  
Sorry, we couldn't find any existing installation instruction that matched.

Lawnmower would not run - coughed a couple times then stopped

Stephen from Lebanon, New Jersey

4 of 4 people found this instruction helpful.
Difficulty Level:
Easy
Total Repair Time:
Less than 15 mins
Tools:
Socket set
Parts Used:
66538S, 591420
1. Diagnosed \"not running\" as a \"no spark\" problem
2. Ordered new armature magneto (AM) and spark plug boot from eReplacementParts.com
3. Read included directions
4. Put mower on workbench, disconnected spark plug cable, removed top cover and cleaned.
5. Removed spark plug. Removed 2 hex bolts and wire, lifted old AMout.
6. Rotated mower flywheel to opposite side per directions, attached wire to new AM, bolted into place per instructions, leaving big space between new AM and flywheel.
7. Again per instructions, rotated mower flywheel so that magnets face AM. Placed 0.010-inch thick card (included with AM) between AM and flywheel.
8. Loosened and re-tightened bolts. Now there is a 0.010-in gap between the AM and flywheel.
9. Reassembled. Put mower on floor and connected spark plug.
10. Gave a mighty pull and mowed my lawn.
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Model Cross Reference

This part works with the following models:
ERP Number: ERP9055852
Manufacturer Part Number: 66538S
Brand Model Number Description
Briggs and Stratton 01052-0 Pressure Washer - Briggs & Stratton Pressure Washer Model 01052-0 (010520, 01052 0) Parts
Briggs and Stratton 01052-1 Pressure Washer - Briggs & Stratton Pressure Washer Model 01052-1 (010521, 01052 1) Parts
Briggs and Stratton 01053-0 Pressure Washer - Briggs & Stratton Pressure Washer Model 01053-0 (010530, 01053 0) Parts
Briggs and Stratton 01133-0 Generator - Briggs & Stratton Generator Model 01133-0 (011330, 01133 0) Parts
Briggs and Stratton 01149-0 Generator - Briggs & Stratton Generator Model 01149-0 (011490, 01149 0) Parts
Briggs and Stratton 01282-0 Pressure Washer - Briggs & Stratton Pressure Washer Model 01282-0 (012820, 01282 0) Parts
Briggs and Stratton 01433-0 Pressure Washer - Briggs & Stratton Pressure Washer Model 01433-0 (014330, 01433 0) Parts
Briggs and Stratton 01433-1 Pressure Washer - Briggs & Stratton Pressure Washer Model 01433-1 (014331, 01433 1) Parts
Briggs and Stratton 01433-2 Pressure Washer - Briggs & Stratton Pressure Washer Model 01433-2 (014332, 01433 2) Parts
Toro 03102 Lawn Mower
Toro 03104 Lawn Tractor - Lawn Tractor
Toro 03108 Lawn Mower - Riding Mower
Toro 03112 Lawn Mower
Toro 03113 Lawn Mower
Lawn Boy 0425A Lawn Mower - Lawn Boy Lawn Mower Model 0425A Parts
Lawn Boy 0427 Lawn Mower - Lawn Boy Lawn Mower Model 0427 Parts
Craftsman 0505-0-580741380 Pressure Washer - 0505-0 - 580.741380, 1,500 Psi (Rev 3 5/20/96) Craftsman
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Engine Spark Plug Boot
$ 6.19
In Stock
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Stock Status
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