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Briggs & Stratton
Lawn & Garden Engine

Model # 8B-HA (904800 - 904999) Official Briggs & Stratton lawn & garden engine

Here are the diagrams and repair parts for Official Briggs & Stratton 8B-HA-904800-904999 lawn & garden engine, as well as links to manuals and error code tables, if available.

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

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Model diagram and schematic

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Showing 10 of 270 parts  |
Plug Oil Fil 66768

#66768

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Plug oil fil

Part #66768

Replaced by #281658S

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Manufacturer substitution
This part replaces 66768. Substitute parts can look different from the original.
This item is not returnable
$5.79 | 
15% OFF Phone Price : $6.79
In Stock
Part 294842

#294842

All parts diagram

Part

Part #294842

Replaced by #398808

?
Manufacturer substitution
This part replaces 294842. Substitute parts can look different from the original.
This item is not returnable
$19.69 | 
9% OFF Phone Price : $21.69
In Stock
Retainer-vlv 23184

#23184

All parts diagram

Retainer-vlv

Part #23184

Replaced by #691760

?
Manufacturer substitution
This part replaces 23184. Substitute parts can look different from the original.
$10.16 | 
16% OFF Phone Price : $12.16
In Stock
Vlv Shut Off 293934

#293934

All parts diagram

Vlv shut off

Part #293934

Replaced by #592840

?
Manufacturer substitution
This part replaces 293934. Substitute parts can look different from the original.
$60.00 | 
9% OFF Phone Price : $66.00
In Stock
Washer 220899

#220899

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Washer

Part #220899

Replaced by #220899

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Manufacturer substitution
This part replaces 220899. Substitute parts can look different from the original.
$6.76 | 
13% OFF Phone Price : $7.76
In Stock
Gas Cyl Hd 27670

#27670

All parts diagram

Gas cyl hd

Part #27670

Replaced by #272167

?
Manufacturer substitution
This part replaces 27670. Substitute parts can look different from the original.
This item is not returnable
$12.11
In Stock
Sprng-govrnr 26925

#26925

All parts diagram

Sprng-govrnr

Part #26925

Replaced by #691599

?
Manufacturer substitution
This part replaces 26925. Substitute parts can look different from the original.
$15.31
In Stock
Part 66494

#66494

All parts diagram

Part

Part #66494

Replaced by #221172

?
Manufacturer substitution
This part replaces 66494. Substitute parts can look different from the original.
$8.14
In Stock
Pin Str Grip 230228

#230228

All parts diagram

Pin str grip

Part #230228

Replaced by #230228S

?
Manufacturer substitution
This part replaces 230228. Substitute parts can look different from the original.
This item is not returnable
$7.14
In Stock
Spring 26018

#26018

All parts diagram

Spring

Part #26018

Replaced by #26018

?
Manufacturer substitution
This part replaces 26018. Substitute parts can look different from the original.
$13.11
In Stock

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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Why does my treadmill's walking belt slow down?

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

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Why is my treadmill's walking belt slipping?

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

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Why is my treadmill's walking belt off center?

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

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Why won't my treadmill start even though the console display works?

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

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Why is my treadmill's heart rate sensor not accurate?

Main causes: faulty sensors, wiring failure, bad control console…

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Why does my treadmill have no display?

Main causes: bad control console, wiring failure, bad motor control board…

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Why won't my treadmill power up?

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

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Repair guides for treadmills

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

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How to replace a treadmill motor controller

How to replace a treadmill motor controller

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill drive motor

How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking board

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…

Read more
Repair difficulty
Time required
 30 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 treadmill.

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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.…

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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.…

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