Models > 21R702

21R702 (0121-F1) Briggs and Stratton Engine

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Starter Pawl-Ratchet – Part Number: 281505S
$6.25
This Genuine OEM ratchet pawl is a critical component designed to engage the recoil starting system with the engine, ensuring smooth and reliable starts. Manufactured from durable plastic, this replac...
In Stock
Order now and your part arrives by Mar 19
Engine Oil Seal – Part Number: 795387
$9.47
In Stock
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Engine Oil Seal – Part Number: 391086S
$7.90
This is a genuine OEM sourced replacement part designed for use with a variety of lawn and garden equipment. This item fits the cylinder and helps to provide an air tight seal to prevent any leaks. It...
In Stock
Order now and your part arrives by Mar 19
Tube-breather – Part Number: 794683
$12.72
This item is an authentic OEM replacement part that is intended to be used with small engines from Briggs & Stratton. The breather tube is used to guide the direction of excess gasses and fluid that e...
In Stock
Order now and your part arrives by Mar 19
Gasket-exhaust – Part Number: 692236
$6.32
This is a Genuine OEM replacement part used on a variety of Lawn and Garden Engines. This item is made with Composite Material and it is sold individually. Its purpose is to make an air tight seal bet...
In Stock
Order now and your part arrives by Mar 19
Filter Fuel Mega Pack – Part Number: 394358B
$6.25
This is a genuine OEM replacement part is made out of Plastic, it is sold individually. It is used on a variety of Engines and Motors. The purpose of it is to filter out dirt and other debris from con...
In Stock
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Seal-o Ring – Part Number: 691917
$6.25
This item is an authentic OEM part. It is used in various models of Toro tractors and Briggs & Stratton engines. An o-ring is used to seal and protect in between rigid connected pieces. Proper seal is...
In Stock
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Gasket-crkcse/015 – Part Number: 697110
$9.47
Genuine OEM replacement part used on a variety of Engines. This item is made with Composite Material and it is sold individually. Its purpose is to make an air tight seal so that no air/oil leakage oc...
In Stock
Order now and your part arrives by Mar 19
Starter-rewind – Part Number: 591606
$117.34
This rewind starter is an authentic OEM sourced item that is specially made for Briggs and Stratton engines. This is the starter assembly that is used to pull-start the unit. It is a complete assembly...
In Stock
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Filter-oil – Part Number: 492932S
$14.78
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Engine Ignition Coil – Part Number: 595304
$62.68
Ignition coil 595304 is an original equipment manufacturer (OEM) part that fits Briggs & Stratton lawn and garden equipment engine models 31R907-0018-G1, 33R877-0002-G1, 33R877-0009-G1 and 33S877-0015...
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Guide-push Rod – Part Number: 690822
$14.60
This part is an OEM from Briggs & Stratton. The push rod guide is compatible with many lawn tractor engines. The metal and plastic item is fitted in the cylinder head assembly, securing the push rods....
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Common Problems and Symptoms for 21R702

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Will Not Start
Fixed by these parts
Fixing
How to fix it
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Customer:
Rene from COVINGTON, LA
Parts Used:
691751, 690822
Difficulty Level:
Really Easy
Total Repair Time:
1- 2 hours
Tools:
Nutdriver, Socket set, Wrench set
Stopped running. Turned to be a bent intake push rod and broken rocker arm
Removed head. Replaced both rocker arms, intake pus rod, push rod guide exhaust and head gaskets. Torqued head in 3 stages to 216 in/lbs. gapped intake to .004 and exhaust to .006 at TDC

Added oil and gas. Now running great

If you need to replace push rods use steel (exhaust) they are the same length
The engine was a Briggs & Stratton 217802 0113 E10604 (2006 year date code)
I used the following
796189 gasket
272475S gasket
697494 push rod
690822 push rod guide
691751 rocker arms
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7 of 11 people found this instruction helpful.
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Customer:
Emanuel from FERRIDAY, LA
Parts Used:
794683
Difficulty Level:
Really Easy
Total Repair Time:
30 - 60 mins
Tools:
Socket set
Gas leaking from tube breather
First I opened the top of the mower to expose the housing cover. Secondly I removed the four housing bolts to remove the housing cover from the mower. Next I removed the tube breather and installed the new tube breather and replaced the housing cover with the four bolts previously removed and closed the top of the mower. I filled the mow er with gas to check for leaks which weren't any leaks. I proceeded to mow the lawn with ease.
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8 of 24 people found this instruction helpful.
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