Gas Walk-Behind Mower

Model # 987889010 Official Craftsman lawn mower

Here are the diagrams and repair parts for Official Craftsman 987889010 lawn mower, as well as links to manuals and error code tables, if available.

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Browse Parts for
987889010 Walk-Behind Mowers
Troybilt Lawn Tractor Brake Pad (replaces 740107, 790006a, Tc-799021a) 799021
#38

Transaxle assembly diagram

Troybilt lawn tractor brake pad (replaces 740107, 790006a, tc-799021a)

Part #799021

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Screw 1740496
Screw

Part #1740496

Replaced by #710-1260A

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Manufacturer substitution
This part replaces 1740496. Substitute parts can look different from the original.
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$4.47
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Screw 1724491
Screw

Part #1724491

Replaced by #710-1260A

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Manufacturer substitution
This part replaces 1724491. Substitute parts can look different from the original.
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This item is not returnable
$4.47
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Troybilt Lawn Tractor Brake Pad Plate (replaces Tc-790007) 790007
#37

Transaxle assembly diagram

Troybilt lawn tractor brake pad plate (replaces tc-790007)

Part #790007

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$5.29
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Troybilt Lawn Tractor Bracket 786086
#46

Transaxle assembly diagram

Troybilt lawn tractor bracket

Part #786086

This item is not returnable
$6.79
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Murray Lawn Tractor Spring 792079
#22

Transaxle assembly diagram

Murray lawn tractor spring

Part #792079

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$3.40
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Oil Valve 1768865
#9

Drive assembly diagram

Oil valve

Part #1768865

Replaced by #951-10517A

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Manufacturer substitution
This part replaces 1768865. Substitute parts can look different from the original.
This item is not returnable
$27.89
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Washer 780001
#31

Transaxle assembly diagram

Washer

Part #780001

Replaced by #780001

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Manufacturer substitution
This part replaces 780001. Substitute parts can look different from the original.
This item is not returnable
In Stock
Troybilt Lawn Tractor Transaxle Wheel Axle Oil Seal 788061
#23

Transaxle assembly diagram

Troybilt lawn tractor transaxle wheel axle oil seal

Part #788061

This item is not returnable
$3.40
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Oil Drain Housing 1909371
#10

Drive assembly diagram

Oil drain housing

Part #1909371

Replaced by #751-3141-14

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Manufacturer substitution
This part replaces 1909371. Substitute parts can look different from the original.
This item is not returnable
$18.27
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Symptoms for gas walk-behind mowers

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

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

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

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

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

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…

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 rebuild a lawn mower carburetor

How to rebuild a lawn mower carburetor

The carburetor mixes air with fuel to drive the piston. Rebuild the carburetor if it's clogged or leaks.…

Repair difficulty
Time required
 60 minutes or less
How to replace a lawn mower recoil starter on an OHV engine

How to replace a lawn mower recoil starter on an OHV engine

Replace the recoil starter if it doesn't move when you pull the starter rope.…

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

How to replace a lawn mower wheel

Learn how replace a damaged wheel on a walk-behind lawn mower—it's a quick, easy fix.…

Repair difficulty
Time required
 15 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.

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

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

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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.…

Types of walk-behind mower blades video

Types of walk-behind mower blades video

Learn about the different kinds of mower blades and how to maintain them.…