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MTD
Gas Snowblower

Model # 31AE6KKH731 Official MTD snow thrower

Here are the diagrams and repair parts for Official MTD 31AE6KKH731 snow thrower, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Owner’s manual

Model diagram and schematic

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Showing 10 of 219 parts  |
Lawn & Garden Equipment Cotter Pin, 1/4- To 5/16-in 714-04040
#10

Auger & housing/chute diagram

Lawn & garden equipment cotter pin, 1/4- to 5/16-in

Part #714-04040

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Shear Pin 738-04124
#20

Auger & housing/chute diagram

Shear pin

Part #738-04124

Replaced by #738-04124A

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Manufacturer substitution
This part replaces 738-04124. Substitute parts can look different from the original.
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Shave Plate 790-00120
#51

Auger & housing/chute diagram

Shave plate

Part #790-00120

Replaced by #790-00120-0637

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Manufacturer substitution
This part replaces 790-00120. Substitute parts can look different from the original.
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Belt 754-04050
#54

Drive/wheels diagram

Belt

Part #754-04050

Replaced by #256963

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Manufacturer substitution
This part replaces 754-04050. Substitute parts can look different from the original.
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$32.00 | 
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Yard Machines Lawn Tractor Flange Nut (replaces 00012173, Wd-129-103) 712-04065
#9

Auger & housing/chute diagram

Yard machines lawn tractor flange nut (replaces 00012173, wd-129-103)

Part #712-04065

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Yard Machines Lawn & Garden Equipment Nut 712-04064
Yard machines lawn & garden equipment nut

Part #712-04064

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Shave Plate 790-00118
#51A

Auger & housing/chute diagram

Shave plate

Part #790-00118

Replaced by #790-00118-0637

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Manufacturer substitution
This part replaces 790-00118. Substitute parts can look different from the original.
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Skid Shoe 784-5580
#35A

Auger & housing/chute diagram

Skid shoe

Part #784-5580

Replaced by #784-5580-0637

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This part replaces 784-5580. Substitute parts can look different from the original.
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Worm Gear 717-0528A
#56

Auger & housing/chute diagram

Worm gear

Part #717-0528A

Replaced by #917-04861

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This part replaces 717-0528A. Substitute parts can look different from the original.
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Knob Wing Nut 720-0284
Knob wing nut

Part #720-0284

Replaced by #720-04072A

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This part replaces 720-0284. Substitute parts can look different from the original.
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Symptoms for gas snowblowers

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Why doesn't my snowblower auger turn?

Main causes: broken shear pins, worn or loose auger drive belt, auger drive cable failure, damaged auger, bad gear case…

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Why won't my snowblower clear snow well?

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

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Why won't my snowblower start?

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

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What should I do about a damaged snowblower tire?

Main causes: punctured tire, damaged rim…

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Why won't my snowblower throw snow far enough?

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

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How do I tune up my snowblower?

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

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Why does my snowblower engine run rough?

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

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Why does my snowblower stop running after a few seconds?

Main causes: dirty carburetor, stale fuel…

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Why doesn't my snowblower self propel?

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

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