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How do I find MTD replacement parts?
For your MTD gas lawn mower model 12AVB2R3793, the fastest way to find the right replacement part is to match the model number first, then confirm the part by name and identifier before ordering. This prevents common fit issues with blades, belts, wheels, and control cables.
- Confirm the mower model number is 12AVB2R3793 on the product label.
- Identify what system you’re repairing (engine tune-up, drive system, cutting deck, bagging).
- Match the part by description and identifier, not just by a photo.
- If you’re unsure, start with common maintenance items like an air filter or fuel cap.
- Compare your old part’s measurements and mounting style (holes, tabs, cable ends) before ordering.
These are frequently replaced items that help with starting, cutting quality, and bagging performance:
| What you’re fixing | Part to check first | What it affects |
|---|---|---|
| Hard starting, poor power | Air filter 593260 | Airflow to the engine |
| Fuel smell, leaking, won’t vent | Fuel cap 84004416 | Tank sealing and venting |
| Bagging issues | Lawn mower grass bag 664P05322A | Collection and airflow |
- Blades: confirm deck size (many are 21-in) and the center mounting pattern.
- Belts: match length and width; “close enough” belts slip or won’t drive.
- Cables: match the end fittings and sheath length.
- Wheels: match diameter and hub style.
MTD walk-behind mowers often share similar-looking parts across multiple model families. Using the exact model number 12AVB2R3793 and matching the correct part identifier helps ensure proper fit, safe operation, and reliable performance.
Last updated: February 2026
How do I tell what year my MTD mower is?
To tell the year on your MTD gas lawn mower model 12AVB2R3793, we use the mower’s model number and (when available) the product ID tag on the deck. On many MTD walk-behind mowers, the model-number pattern encodes the equipment type and the manufacture year.
Look for a sticker or stamped tag on the mower deck (often near the rear discharge area, under the rear flap, or on the back of the deck). Use these items together:
- Full model number: 12AVB2R3793
- Serial number (if present)
- Any date code on the tag (month/day/year or a coded format)
- Engine model/type/code (on the Briggs & Stratton engine shroud, if equipped)
MTD model numbers commonly follow a pattern where early digits identify the product family and type, and another digit indicates the model year. For walk-behind mowers, the third digit is often used as the year indicator within that numbering system.
| What you have | What it tells us | What to do next |
|---|---|---|
| Model number (12AVB2R3793) | Product family and configuration | Compare the “year digit” to MTD’s year chart for that series |
| Serial number | Production sequence | Use it to narrow down build date when a date code is present |
| Engine code | Engine build date | Use it to estimate mower build timeframe (mower is usually built after engine) |
Knowing the correct year helps us match the right walk-behind mower parts (blade, belt, wheels, cables) because MTD often changes deck hardware and drive systems between year revisions.
If you are unsure you have the correct model identified, replacing a common maintenance item is a quick cross-check for fit.
- Air filter 593260 (engine maintenance part commonly replaced)
- Fuel cap 84004416 (helps confirm tank neck style and venting)
Last updated: February 2026
What model is my lawnmower?
Your lawn mower’s model number is printed on the mower’s ID label (not on the engine). On an MTD walk-behind mower, we typically find that label on the mower deck near the engine, along the side of the deck, or at the rear under the rear guard.
Check these common label locations first:
- On top of the mower deck, just behind or beside the engine
- On the left or right side of the deck (near the rear wheel area)
- On the back of the deck under the rear guard or rear discharge area
- Near the height-adjustment brackets on the deck
- On a sticker or metal tag riveted to the deck (not the handle)
For the mower on this page, the model number format looks like 12AVB2R3793. Your label may include several identifiers; use the mower model number to match parts.
| Label item | What it means | Use it for |
|---|---|---|
| Model number (example: 12AVB2R3793) | Identifies the mower deck and drive system | Finding correct MTD parts diagrams and parts |
| Serial number | Unique ID for your specific mower | Warranty and manufacturing info |
| Engine model/type/code | Identifies the engine only | Engine-specific parts like filters and carburetor parts |
- Wipe dirt and grass off the deck label; use a flashlight to read faded print
- Write the model number exactly as shown (letters and numbers)
- If you only have engine numbers, you still need the mower model number for deck, blade, wheel, and bag parts
MTD uses similar-looking decks across many models. Matching the exact model number prevents ordering the wrong blade, wheel, belt, or control cable for your mower.
If you’re servicing the engine while you’re there, replacing the air filter 593260 is a common tune-up step.
Last updated: February 2026
