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Troybilt
Rear-Tine Tiller

Model # 29903 Official Troybilt tiller

Here are the diagrams and repair parts for Official Troybilt 29903 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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ALL PARTS
Showing 10 of 123 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.
BEST SELLER
This item is not returnable
$4.91 | 
17% OFF Phone Price : $5.91
In Stock
Bolt 9703
#16

Handlebars, forward clutch cable, and handlebar mounting diagram

Bolt

Part #9703

Replaced by #710-3008

?
Manufacturer substitution
This part replaces 9703. Substitute parts can look different from the original.
This item is not returnable
$4.62 | 
18% OFF Phone Price : $5.62
In Stock
Oil Seal 9617
#7

Transmission housing, covers, seals, gaskets, and plug diagram

Oil seal

Part #9617

Replaced by #921-04030

?
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
Roll Pin 9308
#8A

Tine hood, depth regulator, and drag bar 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
Washer 50027
Washer

Part #50027

Replaced by #GW-50027

?
Manufacturer substitution
This part replaces 50027. Substitute parts can look different from the original.
This item is not returnable
$11.74
In Stock
Key 9305
#6

Wheel shaft & tiller shaft assemblies diagram

Key

Part #9305

Replaced by #714-04059

?
Manufacturer substitution
This part replaces 9305. Substitute parts can look different from the original.
$11.74
In Stock
Lock Washer 9912
Lock washer

Part #9912

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

Tine 50049-01
Tine

Part #50049-01

Replaced by #742-04226-0637

?
Manufacturer substitution
This part replaces 50049-01. Substitute parts can look different from the original.
$22.79 | 
21% OFF Phone Price : $28.79
In Stock
Idler Pulley 9090
#21

Engine, engine brackets, and forward drive mechanism diagram

Idler pulley

Part #9090

Replaced by #756-04170

?
Manufacturer substitution
This part replaces 9090. Substitute parts can look different from the original.
$40.41 | 
13% OFF Phone Price : $46.41
In Stock
Tine 1901
#6A

Bolo tines diagram

Tine

Part #1901

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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Top questions about Sears and Sears PartsDirect

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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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Tiller common questions

Tiller common questions

These frequently asked questions might help you figure out what's wrong with your garden tiller.…

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