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Model # 21AA412A000 Official MTD rear-tine tiller
Here are the diagrams and repair parts for Official MTD 21AA412A000 rear-tine tiller, as well as links to manuals and error code tables, if available.
 Owner’s manualBy Schematic
By Part
SELECT DIAGRAM
Browse Parts for
21AA412A000 Tillers
#18
Drive system diagram
Lock washer
Part #736-0119
Replaced by #936-0119
?
Manufacturer substitution
This part replaces 736-0119. Substitute parts can look different from the original.
This item is not returnable
$6.05 |Â
14% OFFÂ Phone Price : $7.05
In Stock
#28
Handle & tine shield diagram
Ryobi lawn tractor bolt (replaces 01000369, 1509-091, 1509-117, 153015, 706-10123-20, 706-501277-1, 710-0342, 910-3005)
Part #710-3005
This item is not returnable
$5.11 |Â
16% OFFÂ Phone Price : $6.11
In Stock
#31
Gear case diagram
Cap screw
Part #710-0258
Replaced by #710-0751
?
Manufacturer substitution
This part replaces 710-0258. Substitute parts can look different from the original.
This item is not returnable
$5.12 |Â
16% OFFÂ Phone Price : $6.12
In Stock
Lawn tractor hex bolt
Part #710-3008
This item is not returnable
$4.62 |Â
18% OFFÂ Phone Price : $5.62
In Stock
#16
Handle & tine shield diagram
Ryobi lawn & garden equipment flat washer
Part #736-0204
This item is not returnable
$5.43 |Â
16% OFFÂ Phone Price : $6.43
In Stock
#13
Drive system diagram
Lawn & garden equipment screw
Part #710-0606
This item is not returnable
$8.21 |Â
11% OFFÂ Phone Price : $9.21
In Stock
#15
Gear case diagram
Flat washer
Part #736-0351
This item is not returnable
$6.23
In Stock
#10
Handle & tine shield diagram
Ryobi tiller shift rod knob
Part #720-0210A
This item is not returnable
$26.46
In Stock
#7
Drive system diagram
Yard machines lawn tractor screw
Part #710-1007
This item is not returnable
$9.03
In Stock
#4
Handle & tine shield diagram
Ryobi tiller handle grip
Part #720-0278A
$30.91 |Â
16% OFFÂ Phone Price : $36.91
In Stock
Most common symptoms to help you fix your tillers
Choose a symptom to see related tiller repairs.
Main causes: clutch cable problems, faulty transmission…
Main causes: damaged tines, broken clevis pins, worn drive belt, faulty transmission, clutch cable problems, improper de…
Main causes: worn or broken drive belts, bad transmission, clutch cable problems…
Main causes: leaky engine head gasket, damaged sump gasket, damaged oil drain plug seal, loose or cracked fuel line, lea…
Main causes: broken shaft clevis pins, transmission failure…
Main causes: dirty carburetor, engine needs tune up, stale gas…
Main causes: carburetor failure, bad gasoline, dirty spark plug, broken recoil starter…
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.
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…
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.
Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
Rear tine tiller or front tine tiller, what to know to help in choosing the correct one for your needs.…