Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Tips to find your model number
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Briggs & Stratton
Lawn & Garden Engine

Model # 40S877-0021-G1 Official Briggs & Stratton engine

Here are the diagrams and repair parts for Official Briggs & Stratton 40S877-0021-G1 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 219 parts  |
Lawn & Garden Equipment Engine Air Filter (replaces Bs-792105) 792105
#445

Blower housing/air cleaner diagram

Lawn & garden equipment engine air filter (replaces bs-792105)

Part #792105

BEST SELLER

Get free shipping with Automatic Reorder

$26.47 | 
18% OFF Phone Price : $32.47
In Stock
Lawn & Garden Equipment Engine Fuel Pump Assembly 808656
#387

Carburetor/fuel supply diagram

Lawn & garden equipment engine fuel pump assembly

Part #808656

Replaced by #597338

?
Manufacturer substitution
This part replaces 808656. Substitute parts can look different from the original.
BEST SELLER
$30.26 | 
17% OFF Phone Price : $36.26
In Stock
Lawn & Garden Equipment Engine Fuel Pump Vacuum Hose (replaces 593998) 596163
#918A

Cylinder head/intake manifold diagram

Lawn & garden equipment engine fuel pump vacuum hose (replaces 593998)

Part #596163

BEST SELLER
This item is not returnable
$11.78 | 
15% OFF Phone Price : $13.78
In Stock
Lawn & Garden Equipment Engine Fuel Pump Vacuum Hose 593998
Lawn & garden equipment engine fuel pump vacuum hose

Part #593998

Replaced by #596163

?
Manufacturer substitution
This part replaces 593998. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$11.78 | 
15% OFF Phone Price : $13.78
In Stock
Lawn & Garden Equipment Engine Rocker Arm Cover Gasket (replaces 273486) 690971
Lawn & garden equipment engine rocker arm cover gasket (replaces 273486)

Part #690971

BEST SELLER
$9.02 | 
10% OFF Phone Price : $10.02
In Stock
Lawn & Garden Equipment Engine Crankcase Gasket 594195
Lawn & garden equipment engine crankcase gasket

Part #594195

$56.79 | 
10% OFF Phone Price : $62.79
In Stock
Lawn & Garden Equipment Engine Cylinder Head 796231
#5

Cylinder head/intake manifold diagram

Lawn & garden equipment engine cylinder head

Part #796231

Replaced by #84001918

?
Manufacturer substitution
This part replaces 796231. Substitute parts can look different from the original.
$219.50 | 
5% OFF Phone Price : $231.50
In Stock
Lawn & Garden Equipment Engine Governor Gear (replaces 698231) 793338
#219

Engine sump/oil pump/dipstick diagram

Lawn & garden equipment engine governor gear (replaces 698231)

Part #793338

$31.42 | 
16% OFF Phone Price : $37.42
In Stock
Lawn & Garden Equipment Engine Hex Screw (replaces 690960, 692126, 697551, 94744, Bs-691108) 691108
Lawn & garden equipment engine hex screw (replaces 690960, 692126, 697551, 94744, bs-691108)

Part #691108

This item is not returnable
$5.09 | 
16% OFF Phone Price : $6.09
In Stock
Lawn & Garden Equipment Engine O-ring (replaces 281106, 697891) 691917
#617

Cylinder head/intake manifold diagram

Lawn & garden equipment engine o-ring (replaces 281106, 697891)

Part #691917

This item is not returnable
$6.89 | 
13% OFF Phone Price : $7.89
In Stock

RECOMMENDED MAINTENANCE PARTS AND ACCESSORIES

Symptoms for top-mount refrigerators

Why is there water in the bottom of the fridge under vegetable drawers?

Main causes: frozen or clogged defrost drain tube, cracked water system tubing…

Read more

Repair guides for top-mount refrigerators

How to replace the electronic control board inside a top-freezer refrigerator

How to replace the electronic control board inside a top-freezer refrigerator

The electronic control board is the "brains" of the refrigerator. Replace the electronic control board if it fails.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a refrigerator temperature control thermostat

How to replace a refrigerator temperature control thermostat

This helpful refrigerator repair guide explains how to replace the temperature control thermostat in a refrigerator.…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace the condenser fan motor in a top-freezer refrigerator

How to replace the condenser fan motor in a top-freezer refrigerator

The condenser fan is in the machine compartment of the refrigerator next to the compressor. It moves air across the cond…

Read more
Repair difficulty
Time required
 15 minutes or less

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

View all
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.…

Read more
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.…

Read more

Parts & More