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Troybilt
Rear-Tine Tiller

Model # 12059 Official Troybilt rotary tiller

Here are the diagrams and repair parts for Official Troybilt 12059 rotary tiller, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 180 parts  |
Plug 9726
#83

Power unit transmission assemblies diagram

Plug

Part #9726

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

Lock Pin 9385
#22

Handlebar assembly diagram

Lock pin

Part #9385

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

Nut 9803
Nut

Part #9803

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

Lock Washer 9913
Lock washer

Part #9913

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

Decal 1900766
#21

Wheel speed lever, belt drive system, engines, wheels diagram

Decal

Part #1900766

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

8hp Kohler M 1901086
#37

Wheel speed lever, belt drive system, engines, wheels diagram

8hp kohler m

Part #1901086

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

Housing 2206
#23A

Tiller attachment transmission assemblies diagram

Housing

Part #2206

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

Screw ET42-447
#5

Forward interlock system diagram

Screw

Part #ET42-447

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

Bolt 9466
#3

Wheels/tines/pto drive lever & yoke assembly diagram

Bolt

Part #9466

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

Decal 1448
#11

Bumper attachment diagram

Decal

Part #1448

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

Most common symptoms to help you fix your tillers

Choose a symptom to see related tiller repairs.

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Why do my tiller's tines turn but the wheels don't?

Main causes: clutch cable problems, faulty transmission…

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Why does my tiller turn the soil poorly?

Main causes: damaged tines, broken clevis pins, worn drive belt, faulty transmission, clutch cable problems, improper de…

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Why won't my tillers wheels or tines turn?

Main causes: worn or broken drive belts, bad transmission, clutch cable problems…

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Why does my tiller's engine leak oil or gas?

Main causes: leaky engine head gasket, damaged sump gasket, damaged oil drain plug seal, loose or cracked fuel line, lea…

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Why do my tiller's wheels turn but the tines don't?

Main causes: broken shaft clevis pins, transmission failure…

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Why does my tiller's engine run roughly or misfire?

Main causes: dirty carburetor, engine needs tune up, stale gas…

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Why won't my tiller's engine start?

Main causes: carburetor failure, bad gasoline, dirty spark plug, broken recoil starter…

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Most common repair guides to help fix your tillers

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

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How to replace a tiller recoil starter

How to replace a tiller recoil starter

The recoil starter spins the engine when you pull the starter rope, and the rope retracts when released. If the recoil s…

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Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your tillers

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

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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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.…

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A guide to garden tillers

A guide to garden tillers

Rear tine tiller or front tine tiller, what to know to help in choosing the correct one for your needs.…

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