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MTD 12BBP2R3793 (2020) m320 lawn mower

MTD 12BBP2R3793 (2020) m320 lawn mower Parts

Here are the diagrams and repair parts for MTD 12BBP2R3793 (2020) m320 lawn mower, as well as links to manuals and error code tables, if available.

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Browse Parts for 12BBP2R3793 (2020) Walk-Behind Mowers

MTD M320 LAWN MOWER 12BBP2R3793 (2020) FAQs

For your MTD walk-behind mower model 12BBP2R3793, the fastest way to find the right replacement part is to match the model number and then confirm the exact part by name and identifier before ordering. This prevents fit issues across similar-looking MTD mower versions.

Step-by-step: find the correct part for your mower

  • Locate the model number 12BBP2R3793 on the mower’s ID label (commonly on the rear of the deck, near the handle mounts, or on the frame).
  • Identify what you need to replace (for example: air filter, blade, drive belt, fuel cap, wheel).
  • Match the part by its exact description and ID when available.
  • Compare your old part to the listing (shape, mounting holes, length, and connection points).
  • If multiple options appear, prioritize the one listed for 12BBP2R3793 (2020).

Common MTD mower parts customers replace first

These are the most frequent wear items on a gas walk-behind mower like the 12BBP2R3793:

Part type What it affects Typical symptom when worn
Air filter Engine breathing Hard starting, rough running, black smoke
Blade Cut quality Ragged cut, vibration, poor mulching
Drive belt Self-propel drive Mower won’t pull, slipping drive
Fuel cap Fuel system sealing Fuel smell, leaks, stalling from venting issues

If you’re replacing an engine air filter, use the exact match listed for this model, such as the air filter 593260.

Why it matters (fit and performance)

MTD uses similar decks and controls across many mower lines, but small differences in cable length, belt size, and blade adapter style can cause a part to not fit or to perform poorly. Matching by model number and then verifying the part details avoids returns and repeat repairs.

Quick checks before you order

  • Confirm whether your mower is push or self-propelled (drive parts differ).
  • Measure belt length or blade length if you are unsure.
  • Inspect related hardware (nuts, shoulder screws, and adapters) for wear when replacing rotating parts.

Last updated: February 2026

For your MTD walk-behind mower model 12BBP2R3793, the year is typically identified from the model and serial number tag on the mower; on many MTD model numbers, specific digits indicate the product family and the manufacturing year. If the tag is missing or unreadable, matching the exact model number to the correct replacement parts is the fastest way to confirm the production series.

Where to find the model and serial number

Look for a sticker or metal tag in one of these common locations:

  • On the rear of the deck near the discharge opening or rear door
  • On the deck housing above the rear wheels
  • Near the height-adjustment area on the deck
  • On the handle bracket or handle mount area
  • Near the engine mounting area (not on the engine itself)

How MTD model numbers usually indicate the year

MTD model numbers often follow a structured format where certain positions identify the equipment type and a year code. For many MTD products:

  • The first digits identify the product category/family
  • The next digit(s) identify the equipment type (push, self-propelled, rider, etc.)
  • A later digit (often the third digit in some numbering schemes) is used as a year indicator

Because numbering formats vary by product line and production run, we use the model number plus the serial number on the tag to confirm the exact year and parts list.

Quick checks that help confirm you have the right year/series

Use these practical cross-checks on model 12BBP2R3793:

  • Compare your deck size and blade style to the listed blade type
  • Confirm whether your mower is self-propelled (drive belt and transmission present)
  • Match common maintenance parts by fit, not just appearance
  • Verify handle style and control cable routing
  • Check whether your mower uses a bagger setup and frame style

Common parts that help “fingerprint” the build

What you check What it helps confirm Example part on this model page
Engine air filter style Engine family and production series Air filter 593260
Drive system parts Self-propelled vs push configuration Ground drive belt (954-04282)
Rear bag components Bagging configuration and frame style Grass bag (664P05324)

Why it matters

The correct year and series ensures you get the right MTD parts (blade, drive belt, control cables, and deck components). Even small mid-year changes can affect fit, especially on drive systems and handle controls.

Last updated: February 2026

For your MTD walk-behind mower model 12BBP2R3793, the model number is typically printed on a label or stamped into the mower deck or frame. We recommend checking the cutting deck first, then the rear frame areas where labels are protected from debris.

Where to look on an MTD walk-behind mower

Check these common locations (clean the area first so the tag is readable):

  • Rear left side of the cutting deck (one of the most common spots)
  • Rear of the frame cover, between the wheels
  • Right side of the frame
  • Rear of the frame
  • Near the starter rope housing (starter housing area)

Quick steps to find it fast

  1. Turn the mower off and let the engine cool completely.
  2. Tip the mower only as recommended for service (avoid spilling fuel and oil).
  3. Wipe grass and dirt off the deck and rear frame with a rag.
  4. Look for a white/silver sticker, or a stamped/etched number on metal.

What the model number helps you match

Having the exact model number (like 12BBP2R3793) helps us match the correct parts list and diagrams for your mower.

What you’re identifying Why it matters
Model number Ensures the parts diagram matches your exact mower version
Part number Identifies the manufacturer’s replacement number
Part ID Helps match the correct Sears PartsDirect part listing

Why it matters

MTD often uses similar-looking decks, handles, and drive systems across multiple mower versions. Using the exact model number prevents ordering the wrong blade, belt, or control cable.

If you are doing seasonal maintenance after locating your model number, a common tune-up item is the air filter 593260.

Last updated: February 2026

Most common symptoms to help you fix your walk-behind mowers

Choose a symptom to see related walk-behind mower repairs.

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Main causes: damaged cutting blade, loose cutting blade, damaged flywheel key, engine needs tune up…

Main causes: uneven wheel height settings, damaged wheel, dull or damaged cutting blade…

Main causes: dirty carburetor, bad spark plug, clogged air filter, engine choke problems, clogged gas cap vent…

Main causes: drive control cable failure, worn or broken drive belt, bad transmission, broken drive wheel…

Repair guides for gas walk-behind mowers

These step-by-step repair guides will help you safely fix what’s broken on your walk-behind lawn mower.

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