Briggs & Stratton
Lawn & Garden Engine

Model # 124700 TO 124799 (3604) Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 124700-TO-124799-3604 engine, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 336 parts  |

Spark Plug 293918
#337B

Cylinder assembly diagram

Spark plug

Part #293918

Replaced by #796112S

?
Manufacturer substitution
This part replaces 293918. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.24
16% OFF Phone Price : $6.24
In Stock
Spark Plug 298809
#337A

Cylinder assembly diagram

Spark plug

Part #298809

Replaced by #796112S

?
Manufacturer substitution
This part replaces 298809. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$5.24
16% OFF Phone Price : $6.24
In Stock
Fuel Tank Cap 493017
#957A

Fuel tank assembly diagram

Fuel tank cap

Part #493017

Replaced by #796577

?
Manufacturer substitution
This part replaces 493017. Substitute parts can look different from the original.
BEST SELLER
$20.69
22% OFF Phone Price : $26.69
In Stock
Fuel Cap 397974
#957

Fuel tank assembly diagram

Fuel cap

Part #397974

Replaced by #796577

?
Manufacturer substitution
This part replaces 397974. Substitute parts can look different from the original.
BEST SELLER
$20.69
22% OFF Phone Price : $26.69
In Stock
Air Cleaner Gasket 272653
#163

Carburetor gasket set/carburetor kit diagram

Air cleaner gasket

Part #272653

Replaced by #795629

?
Manufacturer substitution
This part replaces 272653. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$4.51
18% OFF Phone Price : $5.51
In Stock
Lawn & Garden Equipment Engine Carburetor Float (replaces Bs-398187) 398187
Lawn & garden equipment engine carburetor float (replaces bs-398187)

Part #398187

This item is not returnable
$11.96
14% OFF Phone Price : $13.96
In Stock
Muffler 490547
#300

Muffler assembly diagram

Muffler

Part #490547

Replaced by #692038

?
Manufacturer substitution
This part replaces 490547. Substitute parts can look different from the original.
$44.59
12% OFF Phone Price : $50.59
In Stock
Seal Int El 270344
Seal int el

Part #270344

Replaced by #270344S

?
Manufacturer substitution
This part replaces 270344. Substitute parts can look different from the original.
This item is not returnable
$4.91
17% OFF Phone Price : $5.91
In Stock
Fuel Valve 494539
#958A

Fuel tank assembly diagram

Fuel valve

Part #494539

Replaced by #698180

?
Manufacturer substitution
This part replaces 494539. Substitute parts can look different from the original.
This item is not returnable
$19.94
9% OFF Phone Price : $21.94
In Stock
Screw 94120
#969

Base air cleaner assembly and cover diagram

Screw

Part #94120

Replaced by #690670

?
Manufacturer substitution
This part replaces 94120. Substitute parts can look different from the original.
This item is not returnable
$10.09
17% OFF Phone Price : $12.09
In Stock

Symptoms for gas line trimmers

Choose a symptom to see related grass line trimmer repairs.

Main causes: stale fuel, clogged fuel filter, faulty spark plug, clogged air filter, cracked fuel lines, clogged carbure…

Main causes: stale fuel, cracked fuel lines, dirty carburetor, bad spark plug, worn piston rings…

Main causes: cracked fuel lines, bad carburetor seals, leaky fuel tank cap, damaged fuel tank…

Repair guides for gas line trimmers

These step-by-step repair guides will help you safely fix what’s broken on your grass line trimmer.

How to rebuild a line trimmer carburetor

How to rebuild a line trimmer carburetor

If the line trimmer engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow…

Repair difficulty
Time required
 15 minutes or less
How to replace a line trimmer carburetor

How to replace a line trimmer carburetor

If the line trimmer won't start even though there's fuel in the tank, the carburetor could be the problem. Follow these …

Repair difficulty
Time required
 15 minutes or less
How to replace a line trimmer fuel line

How to replace a line trimmer fuel line

The fuel line on a grass line trimmer deteriorates with time and eventually can split or crack. You can replace it yours…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your lawn & garden engines

Use the advice and tips in these articles and videos to get the most out of your grass line trimmer.

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

What are the main components of a lawn mower?

What are the main components of a lawn mower?

Learn about the main parts of a lawn mower and when to replace parts.…