Homelite
Gas Walk-Behind Mower

Model # SB21P4E Official Homelite lawn mower

Here are the diagrams and repair parts for Official Homelite SB21P4E lawn mower, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 153 parts  |

Lever JA-99411-0
#24

Figure 4 diagram

Lever

Part #JA-99411-0

The manufacturer no longer makes this part, and there's no substitute part

Battery JA-99122-3
#61

Figure 1 diagram

Battery

Part #JA-99122-3

The manufacturer no longer makes this part, and there's no substitute part

Charger JA-33564-9

#NI

All parts diagram

Charger

Part #JA-33564-9

The manufacturer no longer makes this part, and there's no substitute part

Wheel&tire C JA-16159-6
#46

Figure 1 diagram

Wheel&tire c

Part #JA-16159-6

The manufacturer no longer makes this part, and there's no substitute part

Screw JA-40990-8
#32

Figure 2 diagram

Screw

Part #JA-40990-8

The manufacturer no longer makes this part, and there's no substitute part

Screw JA-40888-1
Screw

Part #JA-40888-1

The manufacturer no longer makes this part, and there's no substitute part

Rod JA-35916-9
#11

Figure 3 diagram

Rod

Part #JA-35916-9

The manufacturer no longer makes this part, and there's no substitute part

Walk-behind Lawn Mower Engine JA-99127-5
#18A

Figure 1 diagram

Walk-behind lawn mower engine

Part #JA-99127-5

The manufacturer no longer makes this part, and there's no substitute part

End Rod JA-35917-9
#8

Figure 3 diagram

End rod

Part #JA-35917-9

The manufacturer no longer makes this part, and there's no substitute part

Bolt JA-35918-0
#3

Figure 1 diagram

Bolt

Part #JA-35918-0

The manufacturer no longer makes this part, and there's no substitute part

Symptoms for gas walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

Main causes: engine needs tune up, dirty or clogged carburetor, damaged flywheel key…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: stale gas, engine needs tune up, bad spark plug, dead battery, bad recoil starter, faulty safety switch, ba…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

How to replace a lawn mower spark plug

How to replace a lawn mower spark plug

Take a few minutes to replace the spark plug during your lawn mower's annual tune-up or if the spark plug is burnt or cr…

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower blade

How to replace a lawn mower blade

Check your lawn mower blade regularly and replaced it if it's bent or damaged. …

Repair difficulty
Time required
 15 minutes or less
How to replace a lawn mower flywheel key on a flathead engine

How to replace a lawn mower flywheel key on a flathead engine

When you hit a hard object with your mower, the flywheel can shear to protect more expensive components. Learn how to re…

Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your walk-behind mowers

Use the advice and tips in these articles and videos to get the most out of your walk-behind lawn mower.

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

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Introducing new technical repair content that we’re developing for the Sears Technical Institute

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