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Ariens
Gas Walk-Behind Mower

Model # 91140300 (101-1999) Official Ariens lawn mower

Here are the diagrams and repair parts for Official Ariens 91140300-101-1999 lawn mower, as well as links to manuals and error code tables, if available.

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  • 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”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 199 parts  |
Washer- .5 06400015
#25

Transmission/drive diagram

Washer- .5

Part #06400015

This item is not returnable
$5.17
In Stock
Pulley- Wa 01248100
#38

Deck diagram

Pulley- wa

Part #01248100

$144.44
In Stock
Ariens Extender 01287100
#4

Brake diagram

Ariens extender

Part #01287100

$12.80
In Stock
Spring- To 01258100
#31

Deck diagram

Spring- to

Part #01258100

$20.54
In Stock
Rod- Trail 03263700
#3

Frame/front caster diagram

Rod- trail

Part #03263700

$31.05
In Stock
Screw- 8-1 06100206
#35

Engine/clutch/idler diagram

Screw- 8-1

Part #06100206

$8.26
In Stock
Decal- Ame 05305100
#2

Decals diagram

Decal- ame

Part #05305100

$64.42
In Stock
Spacer- Ha 07500005
#9

Handlebars diagram

Spacer- ha

Part #07500005

This item is not returnable
$2.46
In Stock
Brace Tube 01248551
#14

Frame/front caster diagram

Brace tube

Part #01248551

$109.58
In Stock
Lawn & Garden Equipment Locking Flange Nut 06530400
Lawn & garden equipment locking flange nut

Part #06530400

This item is not returnable
$3.22
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 run rough?

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

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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 vibrate a lot?

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

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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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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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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 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…

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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. …

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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…

Read more
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

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

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

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

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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Top questions about Sears and Sears PartsDirect

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