Gas Snowblower

Model # 31AM2N1B729 Official MTD snow thrower

Here are the diagrams and repair parts for Official MTD 31AM2N1B729 snow thrower, as well as links to manuals and error code tables, if available.

By Schematic
By Part
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for
31AM2N1B729 Snowblowers
Yard Machines Lawn & Garden Equipment Lock Nut, 5/16-18 (replaces 753-05591) 712-04063
Yard machines lawn & garden equipment lock nut, 5/16-18 (replaces 753-05591)

Part #712-04063

BEST SELLER
This item is not returnable
$4.52
18% OFF Phone Price : $5.52
In Stock
Yard Machines Lawn & Garden Equipment Nut 712-04064
Yard machines lawn & garden equipment nut

Part #712-04064

BEST SELLER
This item is not returnable
$4.49
18% OFF Phone Price : $5.49
In Stock
Lawn Tractor Screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599) 710-0599
#3

Drive system/auger diagram

Lawn tractor screw (replaces 01000628, 01000865, 1186307, 1186308, 791-180288, 791-683298, 910-0599)

Part #710-0599

BEST SELLER
This item is not returnable
$4.91
17% OFF Phone Price : $5.91
In Stock
Yard Machines Lawn Mower Handle Knob (replaces 01000382, 113589, 720-04072, 720-04125) 720-04072A
Yard machines lawn mower handle knob (replaces 01000382, 113589, 720-04072, 720-04125)

Part #720-04072A

BEST SELLER
$9.33
10% OFF Phone Price : $10.33
In Stock
Lawn & Garden Equipment Hex Head Screw 710-0895
#5

Shroud/chute/handle/auger housing diagram

Lawn & garden equipment hex head screw

Part #710-0895

$8.20
11% OFF Phone Price : $9.20
In Stock
Yard Machines Lawn & Garden Equipment Wing Nut (replaces 01002925, 920-0279) 720-0279
#4

Shroud/chute/handle/auger housing diagram

Yard machines lawn & garden equipment wing nut (replaces 01002925, 920-0279)

Part #720-0279

This item is not returnable
$6.87
13% OFF Phone Price : $7.87
In Stock
Yard Machines Lawn & Garden Equipment Guide Bolt 710-1205
#3

Shroud/chute/handle/auger housing diagram

Yard machines lawn & garden equipment guide bolt

Part #710-1205

This item is not returnable
$5.01
17% OFF Phone Price : $6.01
In Stock
Wheel-9x2.12 734-2010A
#47

Drive system/auger diagram

Wheel-9x2.12

Part #734-2010A

Replaced by #734-2010B

?
Manufacturer substitution
This part replaces 734-2010A. Substitute parts can look different from the original.
$61.70
9% OFF Phone Price : $67.70
In Stock
Aircap Snowblower Scraper Blade (replaces 14240, 706-14240, 731-0722, 731-0778, 731-0812, 7311033) 731-1033
#22

Shroud/chute/handle/auger housing diagram

Aircap snowblower scraper blade (replaces 14240, 706-14240, 731-0722, 731-0778, 731-0812, 7311033)

Part #731-1033

$58.26
9% OFF Phone Price : $64.26
In Stock
Troybilt Snowblower Auger Paddle 735-04033
#38

Drive system/auger diagram

Troybilt snowblower auger paddle

Part #735-04033

$12.82
13% OFF Phone Price : $14.82
In Stock

Symptoms for gas snowblowers

Choose a symptom to see related snowblower repairs.

Things to do: replace the spark plug, change the oil, rebuild the carburetor, adjust valve lash, adjust or replace the b…

Main causes: clogged chute, damaged auger blades, broken shear pins, worn auger belt, damaged gear case, engine problems…

Main causes: dirty carburetor, stale fuel…

Main causes: punctured tire, damaged rim…

Main causes: dirty carburetor, clogged fuel filter, dirty spark plug, incorrect valve lash, leaky engine gaskets…

Main causes: stale gas, clogged carburetor, clogged or broken fuel line, dirty spark plug, bad rewind starter, incorrect…

Main causes: loose drive clutch cable, damaged drive clutch cable, worn friction disc, scraper blade scraping the ground…

Main causes: snow build-up in chute, chute drive mechanism failure, bad chute control assembly…

Main causes: clogged chute, snow build-up in auger housing, broken auger shear pins, auger drive belt needs adjustment, …

Repair guides for gas snowblowers

These step-by-step repair guides will help you safely fix what’s broken on your snowblower.

How to adjust snowblower engine valve lash

How to adjust snowblower engine valve lash

Adjust the engine valve lash on your snowblower to keep the engine starting and running smoothly.…

Repair difficulty
Time required
 15 minutes or less
How to adjust snowblower skid shoes

How to adjust snowblower skid shoes

To prevent snowblower auger and shave plate damage, adjust the skid shoes regularly to keep the shave plate ¼-inch high.…

Repair difficulty
Time required
 15 minutes or less
How to replace a snowblower shave plate

How to replace a snowblower shave plate

Follow the 7 easy steps in this repair guide/video to replace a worn out shave plate on your snowblower.…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your snowblowers

Use the advice and tips in these articles and videos to get the most out of your snowblower.

Snowblower won’t start – 4 easy DIY fixes

Snowblower won’t start – 4 easy DIY fixes

Find easy DIY tips to fix your snowblower when it won't start…

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.…

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.…