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Husqvarna
Gas Walk-Behind Mower

Model # 91738451B Official Husqvarna lawn mower

Here are the diagrams and repair parts for Official Husqvarna 91738451B lawn mower, as well as links to manuals and error code tables, if available.

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Owner’s manual
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Model diagram and schematic

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ALL PARTS
Showing 10 of 102 parts  |
Handle Bolt 191574
#6

Lawn mower diagram

Handle bolt

Part #191574

Replaced by #532191574

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Manufacturer substitution
This part replaces 191574. Substitute parts can look different from the original.
BEST SELLER
$7.98 | 
11% OFF Phone Price : $8.98
In Stock
Lawn & Garden Equipment Lock Nut 73800400
#62

Lawn mower diagram

Lawn & garden equipment lock nut

Part #73800400

Replaced by #582478602

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Manufacturer substitution
This part replaces 73800400. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$2.64 | 
27% OFF Phone Price : $3.64
In Stock
Bolt 17000510
#84

Lawn mower diagram

Bolt

Part #17000510

Replaced by #817000510

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Manufacturer substitution
This part replaces 17000510. Substitute parts can look different from the original.
BEST SELLER
This item is not returnable
$6.64 | 
13% OFF Phone Price : $7.64
In Stock
Lawn Mower Wheel 446779X460
#49

Lawn mower diagram

Lawn mower wheel

Part #446779X460

Replaced by #585911001

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Manufacturer substitution
This part replaces 446779X460. Substitute parts can look different from the original.
$30.64 | 
16% OFF Phone Price : $36.64
In Stock
Lawn Mower Grass Bag 581002102
#50

Lawn mower diagram

Lawn mower grass bag

Part #581002102

Replaced by #581002101

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Manufacturer substitution
This part replaces 581002102. Substitute parts can look different from the original.
$55.37 | 
10% OFF Phone Price : $61.37
In Stock
American Yard Products Lawn & Garden Equipment Washer (replaces 532088343, 532088348, 5320883-48, 532-088348, 532088384) 88348
#65

Lawn mower diagram

American yard products lawn & garden equipment washer (replaces 532088343, 532088348, 5320883-48, 532-088348, 532088384)

Part #88348

Replaced by #532088348

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Manufacturer substitution
This part replaces 88348. Substitute parts can look different from the original.
This item is not returnable
$6.83
In Stock
Bracket.asm.hand.hw.21.lt.grey 580915603
#25

Lawn mower diagram

Bracket.asm.hand.hw.21.lt.grey

Part #580915603

$30.64
In Stock
Bracket.asm.hand.hw.21.rt.498 580915703
#26

Lawn mower diagram

Bracket.asm.hand.hw.21.rt.498

Part #580915703

$17.11
In Stock
Lawn Mower Starter Rope Guide T-knob 581912601
#5

Lawn mower diagram

Lawn mower starter rope guide t-knob

Part #581912601

This item is not returnable
$5.76 | 
15% OFF Phone Price : $6.76
In Stock
Bail.om.strt 581497402
#1

Lawn mower diagram

Bail.om.strt

Part #581497402

Replaced by #587478302

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Manufacturer substitution
This part replaces 581497402. Substitute parts can look different from the original.
$30.64
In Stock

Symptoms for gas walk-behind mowers

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

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Why does my lawn mower vibrate a lot?

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

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Why does my lawn mower cut unevenly?

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

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Why does my lawn mower run rough?

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

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Why won't my lawn mower move?

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

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Why won't my lawn mower start?

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

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Why does my lawn mower stall?

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

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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.

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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.…

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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.…

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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.…

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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.

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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.…

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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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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.…

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