MTD 13A6673G118 lawn tractor Parts

MTD ride-on mowers (including the MTD 13A6673G118 front-engine lawn tractor) are made by MTD (Modern Tool and Die), also known as MTD Products. MTD is a U.S.-based outdoor power equipment manufacturer; your 13A6673G118 owner's manual identifies MTD LLC as the warrantor for this tractor.

What “MTD” means for your tractor

MTD is the brand behind the tractor and many of the chassis and deck components. Depending on the exact configuration, some major sub-systems (especially the engine) can be supplied by a separate engine manufacturer.

What’s typically MTD vs. engine-supplied

Component area	Typically supplied by	What you do when ordering parts
Deck, frame, steering, guards	MTD	Match parts by model number 13A6673G118 and deck size/type
Engine long block and some engine parts	Engine manufacturer	Match parts by engine model/type and spec code
Wear items (belts, blades, batteries, tires)	Varies	Match by model and the exact part listing

How to confirm what you have (fast)

Use these checks before you buy parts or troubleshoot:

• Locate the tractor model label and confirm it reads 13A6673G118.
• Find the engine ID tag (model, type, and code) on the engine shroud or valve cover area.
• Compare the deck size and blade style before ordering.
• Use the diagrams and part lists to match the exact part callout.
• Keep your proof of purchase with your records for warranty timing.

Why it matters

Knowing who makes what helps you order the right replacement parts the first time. For example, deck and steering parts are usually selected by tractor model, while many engine-specific items are selected by the engine’s model and spec information.

Last updated: February 2026

The Troy-Bilt (MTD) 13A6673G118 riding mower uses a single-cylinder gasoline engine; this tractor’s operator manual directs you to the separate engine Owner’s/Operator’s Manual (commonly Briggs & Stratton or Tecumseh, depending on the exact build) for the exact engine model and specifications. Use the owner's manual to locate the engine ID label and match it to the correct engine documentation.

How to identify the exact engine on 13A6673G118

We recommend confirming the engine by reading the engine’s ID tag (not the tractor model tag). Look for:

• Engine manufacturer name (often Briggs & Stratton or Tecumseh)
• Model number
• Type (or “Trim”) number
• Code (date code)
• Horsepower or displacement listed on the shroud (if present)

Typical locations for the engine ID label include the blower housing, valve cover area, or near the starter.

What the tractor manual covers vs. what the engine manual covers

The tractor operator manual focuses on mower controls, chassis maintenance, and safe operation, while the engine manual covers engine-specific specs.

Item you need	Where to look	Why it matters
Engine model/type/code	Engine ID tag	Ensures correct tune-up and repair parts
Oil type and capacity	Engine Owner’s/Operator’s Manual	Prevents low-oil damage and hard starting
Spark plug type and gap	Engine Owner’s/Operator’s Manual	Improves starting and smooth running
Air filter service steps	Engine Owner’s/Operator’s Manual	Prevents power loss and black smoke

Why it matters

MTD used more than one engine option across similar tractor platforms. Ordering the right maintenance parts (spark plug, air filter, fuel parts) depends on the engine’s model/type/code, not just the tractor model number.

Related maintenance tip (helps confirm you have the right engine info)

When you service the tractor, follow the safety steps in the manual: disengage blades, shift to neutral, set the parking brake, shut off the engine, and remove the key before working around belts, pulleys, or the deck.

Last updated: February 2026

For your MTD lawn tractor model 13A6673G118, the most reliable way to find the correct replacement parts is to match the model number to the parts diagrams and parts list, then confirm the part number and fit notes before ordering. Your 13A6673G118 owner's manual also helps you identify compatible accessories and maintenance items.

Step-by-step: find the right part for your tractor

• Confirm the model number is 13A6673G118 (use the product ID tag on the tractor).
• Use the parts diagrams for 13A6673G118 to locate the exact component (deck, steering, engine exhaust, etc.).
• Match the diagram callout to the listed part number and description.
• Compare your old part to the listing (mounting holes, length, connectors, thread size).
• Order using the exact part number; for example, a common wear item is the lawn tractor blade 942-0616a.

Common parts customers replace on this model

System	What fails most often	Example from available parts
Mower deck	Dull/bent blade, spindle wear	Blade 942-0616A, spindle assembly 618-0142A
Steering	Loose steering feel, worn components	Steering shaft 738-0919, steering wheel 631-0027
Engine exhaust	Leaks, noise, damaged gasket	Exhaust gasket 692236, muffler 751-0616B

Why it matters

Using the correct model-based diagram prevents ordering the wrong blade, muffler, or steering part. It also helps you avoid fit issues that can cause poor cutting performance, vibration, or premature wear.

Helpful tip from the manual

The manual notes that only certain attachments and accessories are compatible with specific tractor model groups, and using unapproved accessories can create performance problems. Use the compatibility guidance in the 13A6673G118 owner's manual before buying add-ons.

Last updated: February 2026

On an MTD riding lawn mower like model 13A6673G118, the main parts are typically grouped into the engine and fuel system, the cutting deck and blade drive, the controls and safety interlocks, and the steering and chassis. Our owner's manual shows the control locations and how key systems work together.

Common riding mower part names (and what they do)

Here are the most common names you will see when shopping for riding mower and tractor parts:

• Engine and exhaust: engine, muffler, exhaust tube, carburetor, air filter, spark plug, ignition coil
• Fuel system: fuel tank, fuel cap, fuel line, fuel filter
• Starting and charging: battery, starter solenoid, starter motor, ignition switch
• Cutting system: mower deck, blade(s), spindle assembly, deck belt, idler pulleys, discharge chute
• Drive and braking: transmission, drive belt, drive shaft, clutch-brake pedal, disc brake components
• Steering and chassis: steering wheel, steering shaft, steering arm, frame, front axle/pivot bar

Parts you will commonly replace on model 13A6673G118

These are frequent wear or damage items on riding mowers, and they match parts we list for this model:

• Lawn tractor blade 942-0616a (deck cutting performance)
• Lawn mower spindle assembly 618-0142A (blade support and rotation)
• Chute asm-co 731-1032B (directs grass discharge safely)
• Steering shaft 738-0919 (steering control feel and alignment)
• Oil drain cap 751-3142 (oil draining and sealing)

Quick guide: which “system” a part belongs to

If the issue is…	You usually look at…	Example part name
Uneven cut, vibration, poor mulching	Deck and blade system	blade, spindle assembly
Won’t crank or only clicks	Starting/charging and safety interlocks	battery, switch, solenoid
Hard to steer or wandering	Steering and front axle	steering shaft, steering arm
Engine runs rough or loud	Fuel/air and exhaust	air filter, muffler

Why it matters

Knowing the correct part names helps you match diagrams, avoid ordering the wrong hardware, and troubleshoot faster. For example, the manual notes the clutch-brake pedal must be depressed to start, and the deck engagement/lift lever controls cutting height and blade engagement.

Last updated: February 2026