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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
Cap 55010
#12

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

Cap

Part #55010

Replaced by #918-04435

?
Manufacturer substitution
This part replaces 55010. Substitute parts can look different from the original.
$31.02
In Stock
Depth Regulator 55074
#8

Tine hood, depth regulator, and drag bar diagram

Depth regulator

Part #55074

Replaced by #786-04292A-0638

?
Manufacturer substitution
This part replaces 55074. Substitute parts can look different from the original.
$90.40
In Stock
V-belt 55037
#26

Engine, engine brackets, and forward drive mechanism diagram

V-belt

Part #55037

Replaced by #954-04089

?
Manufacturer substitution
This part replaces 55037. Substitute parts can look different from the original.
This item is not returnable

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$25.92 | 
19% OFF Phone Price : $31.92
In Stock
Cotter Pin 9338
#10

Bolo tines diagram

Cotter pin

Part #9338

Replaced by #714-04048

?
Manufacturer substitution
This part replaces 9338. Substitute parts can look different from the original.
$13.91
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
Washer 9944
#2

Drive shaft assembly diagram

Washer

Part #9944

Replaced by #736-04193

?
Manufacturer substitution
This part replaces 9944. Substitute parts can look different from the original.
$11.74
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…

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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

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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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