Craftsman
Lawn & Garden Engine

Model # 143978501 Official Craftsman engine

Here are the diagrams and repair parts for Official Craftsman 143978501 engine, 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 172 parts  |

Lawn Mower O-ring 631028
#29

Carburetor 640052 (71/143) diagram

Lawn mower o-ring

Part #631028

Replaced by #631028A

?
Manufacturer substitution
This part replaces 631028. Substitute parts can look different from the original.
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$2.49
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Needle Seat 631021
#30

Carburetor 640052 (71/143) diagram

Needle seat

Part #631021

Replaced by #631021B

?
Manufacturer substitution
This part replaces 631021. Substitute parts can look different from the original.
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$9.79
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Carburetor 640052
Carburetor

Part #640052

Replaced by #640349

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Manufacturer substitution
This part replaces 640052. Substitute parts can look different from the original.
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Ignition Key 35593
#328

Replacement parts diagram

Ignition key

Part #35593

Replaced by #35062

?
Manufacturer substitution
This part replaces 35593. Substitute parts can look different from the original.
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Cook Top Side Trim Kit Lawn & Garden Equipment Engine Air Filter (replaces 28424l) 28424
#171

Replacement parts diagram

Cook top side trim kit lawn & garden equipment engine air filter (replaces 28424l)

Part #28424

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Float 632019
#28

Carburetor 640052 (71/143) diagram

Float

Part #632019

Replaced by #632019A

?
Manufacturer substitution
This part replaces 632019. Substitute parts can look different from the original.
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Generac Lawn & Garden Equipment Engine Service Manual (replaces 692509, 730546, 740048) 740049

#NI

All parts diagram

Generac lawn & garden equipment engine service manual (replaces 692509, 730546, 740048)

Part #740049

This item is not returnable
$12.19
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Lamination 35135
#100

Replacement parts diagram

Lamination

Part #35135

Replaced by #35135B

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Manufacturer substitution
This part replaces 35135. Substitute parts can look different from the original.
$58.79
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Starter 590733
#390

Replacement parts diagram

Starter

Part #590733

Replaced by #590789

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Manufacturer substitution
This part replaces 590733. Substitute parts can look different from the original.
$77.19
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Lawn & Garden Equipment Engine Throttle Control Bracket 34677
#200

Replacement parts diagram

Lawn & garden equipment engine throttle control bracket

Part #34677

$46.81
11% OFF Phone Price : $52.81
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Symptoms for gas snowblowers

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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.

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How to adjust snowblower engine valve lash

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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

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