21BS122R799 MTD Tiller - Overview
Models starting with 21BS122R799
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Trimmer Primer and Hose Assembly
PartSelect #: PS10014772
Manufacturer #: 791-683974B
This manufacturer-certified primer and hose assembly includes the primer bulb, the primer bulb housing, and the fuel line. Any or all of the clear plastic parts in this assembly may experience wear an...
$27.42
In Stock
Trimmer Fuel Return Line
PartSelect #: PS9137685
Manufacturer #: 791-181086
The OEM fuel return line, or fuel return tube, is a clear plastic line that returns fuel from the primer bulb back into the fuel tank of your engine. You will know your fuel return line is in need of ...
$7.89
In Stock
Trimmer Small Clutch Assembly
PartSelect #: PS9303676
Manufacturer #: 753-05860
This clutch assembly is a genuine OEM replacement kit for outdoor lawn equipment. The kit includes the clutch drum, clutch, clutch washer, and screw. The clutch assembly transfers power from the engin...
$28.58
In Stock
Trimmer Spark Plug
PartSelect #: PS10014637
Manufacturer #: 791-610311B
This Spark Plug is inserted into the cylinder head and is rated as "Easy" to install. The spark plug ignites the air fuel mixture inside the combustion chamber. If the part doesn't work, or is missing...
$14.40
Special Order
Trimmer Air Cleaner Filter
PartSelect #: PS10013535
Manufacturer #: 791-180350B
The manufacturer-certified Air Cleaner Filter is a grey foam filter used to prevent debris and dirt from entering the carburetor and engine, causing damage. Installation is rated as "Easy". This filte...
$10.65
Special Order
Click Pin
PartSelect #: PS9456500
Manufacturer #: 753-04070
This Click Pin (aka a Lynch Pin) is a metal, gold, individually sold pin which can be installed with a screwdriver and socket set. It attaches to the gearbox assembly and will need to be replaced if m...
No Longer Available
Trimmer Clutch Drum
PartSelect #: PS10013373
Manufacturer #: 791-153592
The Clutch Drum is a silver, metal part used to transmit power from the engine to the drive shaft. Installation is rated "Medium" difficult and will require a screwdriver, wrench set, and torx wrenche...
$64.90
Special Order
