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Parts for Yard Machines 21AA40M1052 / 2011: Engine Assembly 170-T0a Parts

Parts for Yard Machines 21AA40M1052 / 2011: Engine Assembly 170-T0a Parts

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2
By: Mtd

Engine valve cover cap for outdoor power equipment. Replaces cracked, broken, or missing valve covers on small engines. Direct fit for blowers, tillers, and more.

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3
By: Mtd

The breather hose is designed as a valve or vent that only functions one way. It allows air into the fuel tank but ensures that no air or emissions escape the tank. When this hose is not functioning, emissions and air could be leaking from the tank and ca

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4
$7.31
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5
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By: Mtd

Fix oil leaks around your valve cover with this engine gasket. Creates a tight seal between cylinder head and cover. Simple DIY repair for small engines.

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6
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$10.71
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7
By: Mtd

Fixes engine misfires and rough running caused by improper valve clearance. This adjusting nut helps restore correct valve timing on lawn mowers and tillers.

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$14.22
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9
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By: Mtd

Engine running rough or making ticking noises? A worn rocker arm stud can affect valve timing. This replacement stud restores proper valve operation.

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16
By: Mtd
$7.95
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18
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5.0 (1)
By: Mtd

This is a small engine spark plug positioned in the engine cylinder head. It supplies the spark that will ignite the air-fuel mixture to enable an engine to produce power. This particular spark plug is designed with superior corrosion resistance and depen

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19
By: Mtd
$7.95
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$8.13
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21
By: Mtd

M8 hex nut secures components on outdoor power equipment engines. Replace if stripped, corroded, or missing to properly fasten parts during repair.

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23
By: Mtd
$3.45
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$4.07
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24
By: Mtd

M6 x 110mm carburetor mounting stud for small engines. Secures carburetor to engine block. Replace if stripped, corroded, or missing to ensure proper installation.

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26
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By: Mtd

This carburetor insulator is a genuine MTD replacement part for appliances with small engines, such as lawn mowers, lawn tractors, lawn trimmers, snowblowers, chipper shredders, tillers, and leaf blowers. The function of a carburetor insulator in a small

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29
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By: Mtd

Seals between carburetor and engine block to prevent air and fuel leaks. Replace if engine runs rough, leaks gas, or loses power. Verify fit by model.

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30
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$24.49
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31
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By: Mtd

Replacement fastener nut for lawn and garden equipment. Threads onto bolts to secure parts together. Replace if stripped, corroded, or missing.

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32
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$7.95
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33
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$7.95
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39
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By: Mtd

Seals the cylinder head to the engine block, preventing compression and oil leaks. Replace if you notice oil seepage, overheating, or loss of power.

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40
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By: Mtd

Push rod kit for small engines. Installs in the valve train assembly. Replace if rods are bent, damaged, or worn from normal engine operation.

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45
By: Mtd

Seals cylinder and piston to prevent combustion gas leaks. Replace if engine uses excess oil, loses power, or has poor compression. Verify fit.

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49
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$3.95
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50
By: Mtd
$10.33
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$11.57
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51
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By: Mtd

Metal connecting rod assembly that links the crankshaft to the piston in small engines. Replace if rod is bent, cracked, or damaged from wear or impact.

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$53.22
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52
By: Mtd

Governor arm shaft for small engines on lawn and garden equipment. Connects governor assembly to carburetor. Replace if worn, damaged, or broken.

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53
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54
$7.31
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55
By: Mtd
$7.95
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56
By: Mtd

Engine won't start or runs rough? This camshaft assembly converts rotational motion to reciprocal motion for proper engine operation. Moderate DIY repair.

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$75.75
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57
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By: Mtd
$34.66
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$37.02
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$2.36

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59
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By: Mtd

Engine won't start after sudden stop? A sheared flywheel key breaks the connection between crankshaft and flywheel. Simple DIY repair.

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$3.44
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$4.13
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60
By: Mtd

Engine surging or racing? Replace a worn governor gear and shaft assembly. Critical for speed control on small engines. Moderate DIY repair.

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$6.95
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61
$7.95
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62
By: Mtd
$7.95
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$8.01
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$0.06

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63
By: Mtd

Crankcase cover for small engines. Protects internal components from debris and damage. Replace if cracked, broken, or missing to maintain proper engine protection.

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65
By: Mtd
$7.95
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$8.02
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$0.07

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66
$7.95
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$7.97
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68
By: Mtd

This replacement part is an oil seal. This is a genuine replacement part made by MTD. This part is used to ensure that oil and other fuel cannot escape from the tank. The seal prevents it from leaking during use to ensure the engine is able to run properl

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70
By: Mtd
$7.95
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71
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By: Mtd

Replacement oil drain plug for outdoor power equipment engines. Installs in the oil pan to seal the drain opening. Replace if stripped, cracked, or leaking.

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$10.65
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73
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By: Mtd

Ignition coil for small engines on lawn and garden equipment. Replace if cracked, damaged, or worn. Includes spark plug boot and wire assembly.

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$110.71
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74
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By: Mtd

Flange bolt fastener for outdoor power equipment. Secures components throughout engine and chassis. Replace if stripped, corroded, or missing.

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75
By: Mtd

Replacement flywheel for small engines. This rotating wheel component stores rotational energy. Order a new one if yours is cracked, rusted, or damaged.

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$138.89
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76
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By: Mtd

Fix engine overheating issues with this cooling fan. Keeps your small engine running at proper temperature. Direct replacement part for reliable operation.

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$35.69
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$42.47
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77
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By: Mtd

Engine won't start or pull cord slips? This starter cup connects the recoil mechanism to start your engine. Simple bolt-on replacement part.

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$19.95
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$23.94
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78
By: Mtd

Fastener nut for outdoor power equipment. Secures components in place during operation. Replace if stripped, corroded, or missing to restore assembly.

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$6.43
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81
$96.43
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$102.98
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82
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By: Mtd

Flat washer for engine recoil starter assembly. Replaces worn, missing, or damaged washers during recoil maintenance or repair. Ensures proper spacing.

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83
By: Mtd

M6 flange bolt for lawn and garden equipment engines. Replaces broken, stripped, or missing bolts. Secures engine components and covers.

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84
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By: Mtd

Engine won't start when you pull the cord? This tiller recoil starter assembly includes all components needed to restore pull-start functionality.

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$91.31
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85
$20.68
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$22.09
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86
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By: Mtd
$7.95
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87
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By: Mtd

Governor spring for small engines on lawn mowers, tillers, blowers, log splitters, and chippers. Replace if stretched, broken, or missing for proper throttle control.

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$10.04
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88
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By: Mtd

Fix engine surging or racing issues with this throttle spring. Closes the throttle valve to control fuel flow. Quick DIY fix for stuck throttles.

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89
By: Mtd

The governor rod is a genuine replacement part found on select models of snowblowers. This rod is responsible for connecting the throttle cable and throttle body, helping to open and close the throttle to change the speed of the engine. This durable metal

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90
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By: Mtd

Engine runs too fast or won't maintain steady speed? This governor bracket controls engine RPM. Common repair for speed control issues on small engines.

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92
$3.61
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97
$12.47
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98
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$7.32
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$8.12
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100
By: Mtd
$7.43
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106
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By: Mtd

Fuel filter for small engines on snowblowers, tillers, and lawn equipment. Replace annually or if engine runs rough to ensure clean fuel flow. Verify fit with your model number.

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109
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110
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By: Mtd

Replacement shield cover for blower housing. Installs over the blower assembly to protect internal components. Order a new cover if yours is cracked or missing.

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$29.54
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$55.60
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$59.51
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$28.44
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$30.37
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$153.95
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$176.35
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$103.50
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$19.04
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$32.30
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By: Mtd

Tiller won't start or rope retracts slowly? This recoil starter spring restores proper pull-cord tension. Moderate DIY repair, typically 30-45 minutes.

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$253.52
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$7.95
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By: Mtd

Creates a leak-proof seal between the fuel drain plug and tank. Replace if you notice fuel leaking from the drain area. Verify fit with your model number.

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a
By: Mtd

This choke control lever automatically regulates the combined amount of air and fuel that come together in a small gasoline powered engine's carburetor to give a cold engine a fuel-rich mixture when the motor is first started. The control lever has severa

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By: Mtd

It's best to have spare O-ring gaskets on hand to rebuild a carburetor when the need arises. Use this manufacturer-approved replacement part to complete the process. When outdoor power equipment shuts off just after starting or won't start altogether, t

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By: Mtd

Air cleaner housing for tillers and garden engines. Covers and protects the air filter assembly. Replace if cracked, broken, or missing to maintain engine.

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By: Mtd

This replacement part is a stud assembly. This is a genuine replacement part made by MTD. This stud assembly is responsible for keeping the muffler in place and secure so that the lawn mower may operate smoothly and according to the user's preferences. A

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$11.77
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By: Mtd

Replace your engine's oil fill plug if it's cracked, stripped, or missing. This plug seals the oil fill opening on small engines for snowblowers and tillers.

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$8.47
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By: Mtd

Fix fuel leaks or loose carburetor connections with this fuel bowl mounting bolt. Secures the fuel bowl to prevent sediment clogs. Quick 5-minute fix.

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$5.63
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By: Mtd

Fuel line kit for small engines. Carries fuel through the machine. Replace if cracked, leaking, or ends don't fit securely even when clamped down.

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$29.95
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By: Mtd

Fuel tank nipple connects fuel lines to the tank on small engines. Replace if cracked, leaking, or worn to restore proper fuel line connections.

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By: Mtd

Cleans incoming air for optimal engine performance. Replace when clogged or debris-filled to maintain proper airflow. Verify fit with your model number.

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$16.16
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