MTD
Rear-Tine Tiller

Model #3903508 MTD rear-tine tiller

Here are the diagrams and repair parts for MTD 3903508 rear-tine tiller, as well as links to manuals and error code tables, if available.


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Showing 10 of 123 parts

Lawn Tractor Hex Screw

#36

Tiller attachments info page 2 Diagram

Lawn tractor hex screw

Part #710-0528
This item is not returnable
$2.75 | 
19% OFF MSRP:$3.40

In Stock

Lawn & Garden Equipment Flat Washer

#12

Tiller attachments info page 2 Diagram

Lawn & garden equipment flat washer

Part #736-0204
This item is not returnable
$2.91 | 
9% OFF MSRP:$3.20

In Stock

Tiller Shift Rod Knob

#8

Tiller attachments info page 2 Diagram

Tiller shift rod knob

Part #720-0210A
$10.64 | 
11% OFF MSRP:$12.00

In Stock

Sprocket-11t

#47

Tiller attachments info page 4 Diagram

Sprocket-11t

Part #713-0435
$16.62

In Stock

Pin

#28

Tiller attachments info page 2 Diagram

Pin

Part #715-0120
This item is not returnable
$6.43 | 
21% OFF MSRP:$8.10

In Stock

Clevis Pin

#30

Tiller attachments info page 3 Diagram

Clevis pin

Part #711-1017
This item is not returnable
$5.22 | 
8% OFF MSRP:$5.70

In Stock

Gear Spur 17

#41

Tiller attachments info page 4 Diagram

Gear spur 17

Part #717-1409
$16.98

In Stock

Tiller Transmission Pulley

#10

Tiller attachments info page 3 Diagram

$54.06 | 
8% OFF MSRP:$59.00

In Stock

Clutch Collar

#44

Tiller attachments info page 4 Diagram

Clutch collar

Part #718-0234
$35.08

In Stock

Lawn & Garden Equipment Thrust Washer

#39

Tiller attachments info page 4 Diagram

Lawn & garden equipment thrust washer

Part #736-0518
This item is not returnable
$7.12

In Stock

Symptoms common to all tillers

Choose a symptom to see related tiller repairs.

Main causes: leaky engine head gasket, damaged sump gasket, damaged oil drain plug seal, loose or cracked fuel line, leaky carburetor seal
Main causes: broken shaft clevis pins, transmission failure
Main causes: worn or broken drive belts, bad transmission, clutch cable problems
Main causes: clutch cable problems, faulty transmission
Main causes: dirty carburetor, engine needs tune up, stale gas
Main causes: carburetor failure, bad gasoline, dirty spark plug, broken recoil starter
Main causes: damaged tines, broken clevis pins, worn drive belt, faulty transmission, clutch cable problems, improper depth-stake setting

Repair guides common to all tillers

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

May 1, 2013
By Lyle Weischwill
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 starter assembly is broken, follow the steps in this repair guide to replace it.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all tillers

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

December 28, 2018

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

By Sears PartsDirect staff

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

November 1, 2016

A guide to garden tillers

By Sears PartsDirect staff

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

November 1, 2015

Tiller common questions

By Sears PartsDirect staff

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