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Troybilt
Rear-Tine Tiller

Model # 12090 Official Troybilt tiller

Here are the diagrams and repair parts for Official Troybilt 12090 tiller, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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Showing 10 of 311 parts  |
Screw 9552
Screw

Part #9552

Replaced by #710-0599

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Manufacturer substitution
This part replaces 9552. Substitute parts can look different from the original.
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This item is not returnable
$4.91 | 
17% OFF Phone Price : $5.91
In Stock
V-belt 9245
#24

Belt drive system, engines, wheels diagram

V-belt

Part #9245

Replaced by #GW-9245

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Manufacturer substitution
This part replaces 9245. Substitute parts can look different from the original.
This item is not returnable

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$25.64 | 
19% OFF Phone Price : $31.64
In Stock
Oil Seal 9617
Oil seal

Part #9617

Replaced by #921-04030

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Manufacturer substitution
This part replaces 9617. Substitute parts can look different from the original.
This item is not returnable
$15.89 | 
11% OFF Phone Price : $17.89
In Stock
Scr-hh 3 8-2 1100011
#22

Belt drive system, engines, wheels diagram

Scr-hh 3 8-2

Part #1100011

Replaced by #710-0459A

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Manufacturer substitution
This part replaces 1100011. Substitute parts can look different from the original.
This item is not returnable
$10.29
In Stock
Oil Seal 85030
#43

Power unit transmission assemblies diagram

Oil seal

Part #85030

Replaced by #921-04044

?
Manufacturer substitution
This part replaces 85030. Substitute parts can look different from the original.
$13.91
In Stock
Hex Jam Nut 1186233
Hex jam nut

Part #1186233

Replaced by #712-0206

?
Manufacturer substitution
This part replaces 1186233. Substitute parts can look different from the original.
This item is not returnable
$2.49 | 
29% OFF Phone Price : $3.49
In Stock
Hex Head Screw 90070
#18

Kickstand/tine attachment diagram

Hex head screw

Part #90070

Replaced by #710-3015

?
Manufacturer substitution
This part replaces 90070. Substitute parts can look different from the original.
This item is not returnable
$5.12 | 
16% OFF Phone Price : $6.12
In Stock
Roll Pin 9308
#16

Depth regulator and tine hood diagram

Roll pin

Part #9308

Replaced by #715-0108

?
Manufacturer substitution
This part replaces 9308. Substitute parts can look different from the original.
$8.66
In Stock
Screw 9672
#31

Power unit transmission assemblies diagram

Screw

Part #9672

Replaced by #710-04354

?
Manufacturer substitution
This part replaces 9672. Substitute parts can look different from the original.
This item is not returnable
$5.94 | 
14% OFF Phone Price : $6.94
In Stock
Shim 1224-4
Shim

Part #1224-4

Replaced by #736-04305

?
Manufacturer substitution
This part replaces 1224-4. Substitute parts can look different from the original.
This item is not returnable
$5.57
In Stock

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…

Read more

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

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

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Find the right carburetor assembly for a Craftsman snowblower, tiller or log splitter

Find the right carburetor assembly for a Craftsman snowblower, tiller or log splitter

This chart will help you find the right carburetor for your Craftsman snowblower, tiller or log splitter.…

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