Snapper
Front-Engine Lawn Tractor

Model #LT120G30AB Snapper lawn tractor - series a

Here are the repair parts and diagrams for your Snapper LT120G30AB lawn tractor - series a. 

The diagram(s) below can help you find the right part.  If you’d like help, we invite you to call our customer service number at the top of the page, or click chat.

On this page, you can also find any manuals, installation guides and error code tables associated with this model.

For advice on diagnosing problems with appliances, lawn & garden equipment and other products, check out the videos, repair guides and articles in our DIY section.

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Showing 10 of 421 parts

Clamp .490 X

#8

Engine Diagram

Clamp .490 x

Part #7029900SM
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  1-2222
This part replaces 1-2222
This item is not returnable

$2.76

In Stock

Fitting

#9

Front axle Diagram

Fitting

Part #7013864SM
?This is a manufacturer substitution. Part may differ in appearance but is a functional equivalent to prior parts including  1-3864
This part replaces 1-3864
This item is not returnable

$2.23

In Stock

T-NUT, 5/16-18 THREAD

#20

30" cutting deck/belts/brakes Diagram

T-nut, 5/16-18 thread

Part #9-0388

The manufacturer no longer makes this part, and there's no substitute part

BOLT, 3/8-16 X 1 3/4" HEX HEAD

#12

30" cutting deck/belts/brakes Diagram

Bolt, 3/8-16 x 1 3/4" hex head

Part #9-0503

The manufacturer no longer makes this part, and there's no substitute part

SCREW, 1/4-20 X 1/2" HEX SELF-TAPPING (6)

#6

Electrical Diagram

Screw, 1/4-20 x 1/2" hex self-tapping (6)

Part #9-0539

The manufacturer no longer makes this part, and there's no substitute part

NUT, 1/2-20 HEX JAM (2)

#7

Spindle-30" cutting deck Diagram

Nut, 1/2-20 hex jam (2)

Part #9-0559

The manufacturer no longer makes this part, and there's no substitute part

BOLT, 1/4-20 X 3/4" CARR. GR. 5 (2)

#9

Electrical Diagram

Bolt, 1/4-20 x 3/4" carr. gr. 5 (2)

Part #9-0074

The manufacturer no longer makes this part, and there's no substitute part

ASSEMBLY, STEERING ADJUSTER

#15

Blade engagement/transmission Diagram

Assembly, steering adjuster

Part #5-2562

The manufacturer no longer makes this part, and there's no substitute part

ASSEMBLY, SPINDLE (2) (SERIES 1)

#1

Spindle-38" cutting deck Diagram

Assembly, spindle (2) (series 1)

Part #5-2847

The manufacturer no longer makes this part, and there's no substitute part

ASSEMBLY, BRAKE BAND

#15

38" cutting deck/belts/brakes Diagram

Assembly, brake band

Part #5-2886

The manufacturer no longer makes this part, and there's no substitute part

Symptoms common to all riding mowers & tractors

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

Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, dirty carburetor
Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clogged carburetor
Main causes: damaged cutting blade, worn deck pulley, damaged mandrel pulley, loose fasteners on mower deck components
Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, broken fuel line
Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim
Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tune up
Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly
Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged mandrel pulleys
Main causes: shift lever needs adjustment, neutral control needs adjustment

Repair guides common to all 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

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

Repair difficulty
Time required
 30 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower spark plug

If the engine is hard to start or if the spark plug electrode is burnt or cracked, take 15 minutes to replace it.

Repair difficulty
Time required
 15 minutes or less
January 1, 2015
By Lyle Weischwill
How to replace a riding lawn mower carburetor

If the engine of your lawn tractor surges or is hard to start, the carburetor could be the problem. Follow these steps to install a new one.

Repair difficulty
Time required
 45 minutes or less

Articles and videos common to all 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.

May 1, 2017

Riding lawn mower engine spins but won't start video

By Sears PartsDirect staff

Troubleshoot fuel, spark and compression issues.

June 1, 2016

How to mow a lawn for healthier grass

By Erin Hynes

How often and tall you mow your lawn has a big impact on its health. Check out these 3 rules.

March 1, 2016

How to change the Smart Switch Ignition password on a lawn tractor video

By Sears PartsDirect staff

See how to unlock the factory default start code so you can set your own passcode.