Champion Spark Plug (RC12YC). The spark plug ignites the fuel and air mixture in the cylinder to power the engine. If the spark plug is burnt, fouled or damaged the engine may not start or may run rough.

Spark Plug

FreshFlow air filter, reduces common food odors in the refrigerator. 15 times more powerful than baking soda. Replace every 6 months

Air Filter

Small engine primer bulb. The primer bulb draws additional fuel into the carburetor to help start the engine.

Primer Bulb

Carburetor Gasket

Tecumseh carburetor repair kit. If the carburetor is clogged, the engine won't get enough fuel. As a result, the engine may not start or may run poorly.

Carburetor Repair Kit

Fuel line kit. Both large & small diameter fuel lines included. The fuel line allows fuel to travel from the fuel tank to the carburetor and from the primer bulb to the fuel system. If the fuel line is leaking, replace it.

Fuel Line

Husqvarna fuel filter. If the fuel filter is clogged, it will restrict the flow of fuel to the carburetor. As a result, the engine may not start.

Fuel Filter

Fuel systems run smoothly with this genuine OEM carburetor, part number 16100-Z8B-901, built for select Honda Lawn Mower.

Carburetor

Seal tanks with this replacement fuel cap, part number 951-10300, made for select Bolens, Craftsman, Huskee, MasterCut, MTD, Troy-Bilt, Yard Machines, Yard-Man, Murray, Cub Cadet, or Husky Lawn Mower, Small Engine, Snowblower, Tiller, Leaf Blower, Log Splitter, or Wood Chipper.

Fuel Cap

Genuine MTD 742-0305A-0637 Articulating Roto-Tiller Tine

Tines

image

21AA40M1009

21AA40M1029

21AA40M1031

21AA40M1052

247.29930

**We’re excited to be able to offer trade professionals like you substantial volume-based discounts. Our PRO pricing levels are based on your anticipated annual parts spend with us. If your actual monthly spending trends lower than anticipated, your discount may change.

Appliance Parts, Lawn Mower Parts, Heating & Cooling Parts. 365 day returns.

Sign up for your PRO account

Create your account for exclusive discounts and benefits, like:

Your One-Stop

Shop

Join Repair Clinic Pro to unlock technician pricing, same-day shipping, dedicated support, and exclusive benefits tailored for repair professionals.

PRO users get exclusive discounts and benefits, like:

This account is not eligible, please contact your customer service representative for any questions.

Unlock technician pricing and exclusive Pro benefits at Repair Clinic. Join free today.

Repair Clinic Pro

Repair Clinic Pro | Discounts & Benefits for Technicians

Your discounted pricing and other Pro benefits are now available.

Thank You for joining Repair Clinic Pro!

Return parts & products within 365 days of placing your order.

Adhesives & Sealants Parts

Appliance Adhesive & Sealant Parts

Air Filters

Air Filters for Home

Appliance Cleaners

Appliance Cleaners for Sale

Dishrack Parts

Dishrack Replacement Parts

Dryer Vents

Dryer Venting Parts

Equipment Covers

OPE, HVAC & Appliance Part Covers

Fuel Treatments

Fuel System Treatments

Hardware & Fasteners

Hardware and Fasteners Parts

Kitchen Appliance Accessories

Kitchen Accessories Parts

Washer & Dryer Accessories

Dryer and Washer Accessories

Light Bulb Parts

Light Bulb Fixture Parts

Oil & Lubricants

Oil and Lubricant Parts

Paint & Supplies

Touch Up Paint & Supplies

Power Cords Parts

Power Cord Repair Parts

Safety Equipment Parts

Safety Equipment Spare Parts

Testing Equipment Parts

Testing Appliance, OPE & HVAC Parts

Specialty Tools Parts

Specialty Tool Parts for Sale

Vacuum Attachments

Vacuum Attachment Parts

Water Filters & System Parts

Water Filter System Parts

Water Treatment Parts

Water Treatment System Parts

Wire & Connector Parts

OPE, HVAC & Appliance Wire & Connector Parts

Lawn Care Supplies

Yard Care Supplies

Heating & Cooling Supplies

HVAC Supplies

CHANNELLOCK Tools Parts

CHANNELLOCK Replacement Tools

Gas Cans & Nozzles

Nozzles & Gas Cans for Sale

Maintenance Repair Kits

Maintenance Appliance Repair Kits

OPE cleaners & Filters Parts

Outdoor Power Equipment Cleaners & Filters

Power Tools Parts

Power Tool Replacement Parts

Appliances

Refrigerator

Dryer

Range/Stove/Oven

Washing Machine

Dishwasher

Washer/Dryer Combo

Microwave

Freezer

Oven/Microwave Combo

Trash Compactor

Ice Machine

Range Vent Hood

Vacuum Cleaner

Garbage Disposer

Dehumidifier

Bath Fan

Carpet Cleaner

Water Filtration System

Hot Water Dispenser

Lawn & Garden

Small Engine

Lawn Mower

Snowblower

String Trimmer

Pressure Washer

Chainsaw

Tiller

Leaf Blower

Wood Chipper

Hedge Trimmer

Generator

Log Splitter

Pole Pruner

Edger

Power Tools

Heating & Cooling

Furnace

Packaged Unit/RTU

Heat Pump

Central Air Conditioner

Air Conditioner

Air Handler

Water Heater

Humidifier

Unit Heater

Drill

Circular Saw

Miter Saw

Reciprocating Saw

Driver

Grinder

Jig Saw

Nailer & Stapler

Paint Sprayer

Planer & Joiner

Battery

Charger

Air Compressor

Wet/Dry Vacuum

Small Appliances

Blender

Craftsman

Cub Cadet

Troy-Bilt

Yard Machines

Huskee

Yard-Man

Plug

Cap, Lid & Cover

Tiller engine won't start? This video provides information on how to troubleshoot a tiller and the most likely defective parts associated with this problem. Commonly replaced tiller parts: Starter Assembly Pull Rope Gas Tank Fuel Line Carburetor Fuel Filter Air Filter Chain Tine Spark Plug The information provided in this tiller troubleshooting video is applicable to all tiller brands: Ariens, Bolens, Craftsman, Cub Cadet, Dixon, Echo, Exmark, Green Machine, Homelite, Honda, Huskee, Husqvarna, John Deere, Lawn Boy, MasterCut, Montgomery Wards, MTD, Murray, Poulan, Poulan Pro, Ryobi, Simplicity, Toro, Snapper, Troy-Bilt, Turf King, Weed Eater, Wheel Horse, Worx, Yard Machines, Yard-Man

Top Reasons Tiller Engine Won't Start  — Tiller Troubleshooting

Tiller engine stops? This video provides information on how to troubleshoot a tiller and the most likely defective parts associated with this problem. Commonly replaced tiller parts: Starter Assembly Pull Rope Gas Tank Fuel Line Carburetor Fuel Filter Air Filter Chain Tine Spark Plug The information provided in this tiller troubleshooting video is applicable to all tiller brands: Ariens, Bolens, Craftsman, Cub Cadet, Dixon, Echo, Exmark, Green Machine, Homelite, Honda, Huskee, Husqvarna, John Deere, Lawn Boy, MasterCut, Montgomery Wards, MTD, Murray, Poulan, Poulan Pro, Ryobi, Simplicity, Toro, Snapper, Troy-Bilt, Turf King, Weed Eater, Wheel Horse, Worx, Yard Machines, Yard-Man

Top Reasons Tiller Engine Stops  — Tiller Troubleshooting

Tiller engine leaks gas? This video provides information on how to troubleshoot a tiller and the most likely defective parts associated with this problem. Commonly replaced tiller parts: Starter Assembly Pull Rope Gas Tank Fuel Line Carburetor Fuel Filter Air Filter Chain Tine Spark Plug The information provided in this tiller troubleshooting video is applicable to all tiller brands: Ariens, Bolens, Craftsman, Cub Cadet, Dixon, Echo, Exmark, Green Machine, Homelite, Honda, Huskee, Husqvarna, John Deere, Lawn Boy, MasterCut, Montgomery Wards, MTD, Murray, Poulan, Poulan Pro, Ryobi, Simplicity, Toro, Snapper, Troy-Bilt, Turf King, Weed Eater, Wheel Horse, Worx, Yard Machines, Yard-Man

Top Reasons Tiller Engine Leaks Gas  — Tiller Troubleshooting

Tiller engine hard to start? This video provides information on how to troubleshoot a tiller and the most likely defective parts associated with this problem. Commonly replaced tiller parts: Starter Assembly Pull Rope Gas Tank Fuel Line Carburetor Fuel Filter Air Filter Chain Tine Spark Plug The information provided in this tiller troubleshooting video is applicable to all tiller brands: Ariens, Bolens, Craftsman, Cub Cadet, Dixon, Echo, Exmark, Green Machine, Homelite, Honda, Huskee, Husqvarna, John Deere, Lawn Boy, MasterCut, Montgomery Wards, MTD, Murray, Poulan, Poulan Pro, Ryobi, Simplicity, Toro, Snapper, Troy-Bilt, Turf King, Weed Eater, Wheel Horse, Worx, Yard Machines, Yard-Man

Top Reasons Tiller Engine Hard To Start  — Tiller Troubleshooting

Tiller engine runs poorly? This video provides information on how to troubleshoot a tiller and the most likely defective parts associated with this problem. Commonly replaced tiller parts: Starter Assembly Pull Rope Gas Tank Fuel Line Carburetor Fuel Filter Air Filter Chain Tine Spark Plug The information provided in this tiller troubleshooting video is applicable to all tiller brands: Ariens, Bolens, Craftsman, Cub Cadet, Dixon, Echo, Exmark, Green Machine, Homelite, Honda, Huskee, Husqvarna, John Deere, Lawn Boy, MasterCut, Montgomery Wards, MTD, Murray, Poulan, Poulan Pro, Ryobi, Simplicity, Toro, Snapper, Troy-Bilt, Turf King, Weed Eater, Wheel Horse, Worx, Yard Machines, Yard-Man

Top Reasons Tiller Engine Runs Poorly  — Tiller Troubleshooting

721-04271 Tiller Plug | Repair Clinic

Tiller Plug 721-04271

This part 721-04271 is compatible with:

Related Articles & Videos

Plug Customer Reviews

Popular models

Shop by Brands

Repair Help by Brands and Product Type

Talk With Us

Talk With Us