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Troybilt
Rear-Tine Tiller

Model # 900039 Official Troybilt roto tiller horse model

Here are the diagrams and repair parts for Official Troybilt 900039 roto tiller horse model, 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 318 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
Clutch Tine 2120-1
#10

(fig. 6) tiller attachment transmission assemblies diagram

Clutch tine

Part #2120-1

Replaced by #1902404

?
Manufacturer substitution
This part replaces 2120-1. Substitute parts can look different from the original.
$183.89
In Stock
Bolt 9703
#10

(fig. 4) depth regulator & tine hood assemblies 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
Clutch Dog 2120-3
#34

(fig. 5) power unit transmission assemblies diagram

Clutch dog

Part #2120-3

Replaced by #1902404

?
Manufacturer substitution
This part replaces 2120-3. Substitute parts can look different from the original.
$183.89
In Stock
Screw 2130
#29

(fig. 5) power unit transmission assemblies diagram

Screw

Part #2130

Replaced by #1902404

?
Manufacturer substitution
This part replaces 2130. Substitute parts can look different from the original.
$183.89
In Stock
V-belt 9245
#24

(fig. 3) wheel speed lever, belt drive sys., engines, wheel 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

?
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
#17

(fig. 4) depth regulator & tine hood assemblies 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
Oil Seal 9600
#43

(fig. 5) power unit transmission assemblies diagram

Oil seal

Part #9600

Replaced by #921-04044

?
Manufacturer substitution
This part replaces 9600. Substitute parts can look different from the original.
$13.91
In Stock
Screw 9672
#31

(fig. 5) 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

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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