Ariens
Rear-Engine Riding Mower

Model # 991056 Official Ariens zero-turn riding lawn mower

Here are the diagrams and repair parts for Official Ariens 991056 zero-turn riding 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 337 parts  |

Screw 5/16 - 51812
Screw 5/16 -

Part #51812

This item is not returnable
In Stock
Craftsman Lawn Tractor Pto Switch 01545600
Craftsman lawn tractor pto switch

Part #01545600

In Stock
Grip - Han 01570000
#15

Steering controls diagram

Grip - han

Part #01570000

In Stock
Spring Pin 01593500
#14

Mechanical lift diagram

Spring pin

Part #01593500

In Stock
Bushing 05518400
#23

Mechanical lift diagram

Bushing

Part #05518400

In Stock
Deck Bracket 00442800
#4

Mounting chains diagram

Deck bracket

Part #00442800

In Stock
Decal Decal 03818500
#12

Decals diagram

Decal decal

Part #03818500

In Stock
Cap Screw 05933100
#4

Engine/clutch diagram

Cap screw

Part #05933100

This item is not returnable
In Stock
Decal- Ame 05305100
#1

Decals diagram

Decal- ame

Part #05305100

In Stock
Wmt- Rh Ct 03752651
#7

Steering controls diagram

Wmt- rh ct

Part #03752651

In Stock

Most common symptoms to help you fix your riding mowers & tractors

Choose a symptom to see related riding mower and lawn tractor repairs.

Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tun…

Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clo…

Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…

Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…

Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…

Main causes: faulty battery, bad alternator…

Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components…

Main causes: shift lever needs adjustment, neutral control needs adjustment…

Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, …

Most common repair guides to help fix your riding mowers & tractors

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

How to replace the starter motor on a riding lawn mower

How to replace the starter motor on a riding lawn mower

If you hear the solenoid click but don’t hear the starter motor spin when you turn the key, follow these steps to replac…

Repair difficulty
Time required
 30 minutes or less
How to rebuild a riding lawn mower carburetor

How to rebuild a riding lawn mower carburetor

Get your sputtering carburetor running smoothly in 60 minutes.…

Repair difficulty
Time required
 60 minutes or less
How to replace a riding lawn mower rear tire

How to replace a riding lawn mower rear tire

Your mower can’t run on a damaged rear tire. Here’s how to install a new one.…

Repair difficulty
Time required
 60 minutes or less

Effective articles & videos to help repair your riding mowers & tractors

Use the advice and tips in these articles and videos to get the most out of your riding mower or lawn tractor.

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.…

Riding lawn mower engine clicks but doesn't turn over video

Riding lawn mower engine clicks but doesn't turn over video

Check the starter solenoid, starter motor, wiring, battery and engine.…

Riding mower and tractor common questions

Riding mower and tractor common questions

You might find the answers to your questions about your riding mower or lawn tractor in this list of frequently asked qu…