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Craftsman 131802170 20" & 22" cast deck mulcher kits

Craftsman 131802170 20" & 22" cast deck mulcher kits Parts

Here are the diagrams and repair parts for Craftsman 131802170 20" & 22" cast deck mulcher kits, as well as links to manuals and error code tables, if available.

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Browse Parts for 131802170 Riding Mowers & Tractors

  • Flange for Craftsman 131802170 - Part 75917

    Replacement parts diagram

    Flange

    Part #75917

    The manufacturer no longer makes this part, and there's no substitute part

  • Retainer for Craftsman 131802170 - Part 75931

    Replacement parts diagram

    Retainer

    Part #75931

    The manufacturer no longer makes this part, and there's no substitute part

  • Blade for Craftsman 131802170 - Part 75957

    Replacement parts diagram

    Blade

    Part #75957

    The manufacturer no longer makes this part, and there's no substitute part

  • Retainer for Craftsman 131802170 - Part 75930

    Replacement parts diagram

    Retainer

    Part #75930

    The manufacturer no longer makes this part, and there's no substitute part

  • Baffle for Craftsman 131802170 - Part 75815

    Replacement parts diagram

    Baffle

    Part #75815

    The manufacturer no longer makes this part, and there's no substitute part

  • Engine, Briggs & Stratton, Model #120k02 for Craftsman 131802170 - Part N/P

    Engine, Briggs & Stratton, Model #120k02

    Part #N/P

    The manufacturer no longer makes this part, and there's no substitute part

  • Blade for Craftsman 131802170 - Part 75958

    Replacement parts diagram

    Blade

    Part #75958

    The manufacturer no longer makes this part, and there's no substitute part

  • Baffle for Craftsman 131802170 - Part 75814

    Replacement parts diagram

    Baffle

    Part #75814

    The manufacturer no longer makes this part, and there's no substitute part

  • Spring for Craftsman 131802170 - Part 75963

    Replacement parts diagram

    Spring

    Part #75963

    The manufacturer no longer makes this part, and there's no substitute part

  • Spring for Craftsman 131802170 - Part 75964

    Replacement parts diagram

    Spring

    Part #75964

    The manufacturer no longer makes this part, and there's no substitute part

Craftsman 20" & 22" Cast Deck Mulcher Kits 131802170 FAQs

The Craftsman 131802170 model number by itself does not map to one single model year; Craftsman riding mowers were produced across many years, and the exact build year is identified from the serial number/date code on your tractor’s ID tag. Use the tag information to pinpoint the manufacture date.

Where to find the build date on the tractor

On most Craftsman riding mowers and lawn tractors, the ID tag is typically:

  • Under the seat (lift the seat and look on the fender pan)
  • On the rear frame near the hitch plate
  • On the left or right side of the frame rail
  • Near the engine compartment on the chassis

Once you find it, write down both the model number (131802170) and the full serial number.

How to decode the year (what to look for)

Craftsman serial formats vary by manufacturer and production run, but these are the most common patterns:

  • A serial number that begins with a date code (often the first 6 digits) that represents month, day, year
  • A serial number that includes a week and year code (common on some mower/tractor tags)
  • A separate line on the tag that explicitly lists MFG DATE or DATE

Quick reference table

What you see on the tag What it usually means What to do next
“MFG DATE” printed The build date is stated directly Use that date as the mower’s year
Serial starts with 6 digits Often a date code Interpret as MMDDYY (or similar) and confirm with the tag labels
No obvious date pattern Year is embedded differently Use the full serial and model together when looking up parts

Why it matters

The correct year (and exact serial) helps match the right deck parts, belts, blades, pulleys, spindles, and electrical components. On riding mowers, small design changes can happen mid-series, so the serial number is the best way to avoid ordering the wrong part.

Helpful next step

If you are using our site tools to match parts, our guide on how to find your appliance model number (and what it means for parts) shows what information to capture from the ID tag so you can get an exact match.

Last updated: February 2026

Craftsman riding mowers and lawn tractors use engines from several major manufacturers; the exact engine brand depends on the specific Craftsman model and engine family. Common engine brands you will see on Craftsman equipment include Briggs & Stratton, Kohler, and Kawasaki.

Common engine brands used on Craftsman equipment

When you are shopping parts for Craftsman model 131802170, confirm the engine brand and model on the engine label before ordering.

  • Briggs & Stratton: very common on many Craftsman lawn tractors
  • Kohler: often found on mid to higher horsepower tractors
  • Kawasaki: commonly used on premium models
  • Other suppliers: some model years may use additional engine makers depending on availability

How to identify the engine brand on your tractor

The fastest way is to read the engine ID tag (not the tractor model tag).

  • Look for a metal tag or sticker on the blower housing, valve cover area, or near the starter
  • Record the engine model, type, and code/spec numbers
  • Match those numbers when selecting parts like an air filter, spark plug, fuel filter, or carburetor
  • If the tag is dirty, wipe it clean; avoid pressure-washing directly at decals and electrical connectors

What to check before buying engine parts

Because this page does not list model-specific engine details for 131802170, we use the engine tag to prevent wrong-part returns.

Part you need What must match Why it matters
Air filter Engine family and filter shape Prevents dust ingestion and hard starting
Spark plug Thread size and heat range Protects ignition coil and improves starting
Fuel filter Line size and flow direction Prevents fuel starvation and stalling
Carburetor kit Engine model and carb number Fixes surging, flooding, and no-start

Why it matters

Engine brands use different specs for filters, ignition parts, and fuel system components. Confirming the engine brand and engine model first saves time and helps your Craftsman tractor run reliably.

For help locating the correct model and ID information before ordering, use how to find your appliance model number (and what it means for parts).

Last updated: February 2026

Common problems on Craftsman riding mowers like model 131802170 usually fall into four areas: no-start or hard-start, stalling or surging, blades not engaging, and poor drive or no movement. Most issues trace back to fuel quality, battery/charging health, belt wear, or safety switch problems.

Most common symptoms and likely causes

  • Clicks but won’t crank: weak battery, corroded battery cables, bad starter solenoid, failed starter
  • Cranks but won’t start: stale fuel, clogged fuel filter, dirty carburetor, fouled spark plug, failed ignition coil
  • Starts then dies or surges: plugged fuel cap vent, dirty carburetor jets, restricted air filter, water in fuel
  • Blades won’t engage: worn deck belt, damaged idler pulley, misadjusted engagement cable, faulty PTO switch (electric PTO models)
  • Won’t move or slips: worn drive belt, loose/misaligned belt guides, damaged idler, drive linkage out of adjustment

Quick checks we recommend first (fast, high-impact)

  1. Confirm the safety interlocks: seat switch, brake/clutch switch, and PTO off position.
  2. Check battery condition: clean terminals; most mower batteries should read about 12.6V fully charged.
  3. Inspect belts: look for glazing, cracking, fraying, or a belt that sits deep in the pulley grooves.
  4. Verify fuel basics: fresh fuel, open fuel shutoff (if equipped), and a clean air filter.
  5. Listen and observe: clicking, grinding, or a slow crank narrows the problem quickly.

Symptom-to-fix guide

Symptom Most likely area Typical fix
No crank, just a click Battery/solenoid/cables Charge/replace battery; clean terminals; test solenoid
Cranks, no start Fuel/ignition Replace spark plug; clean carburetor; replace fuel filter
Runs rough, stalls Fuel/air Clean carburetor; replace air filter; check fuel cap vent
Blades won’t spin Deck drive Replace deck belt; check idler pulleys and engagement
Poor drive or no movement Drive belt/linkage Replace drive belt; adjust linkage; inspect idlers

Why it matters

Catching a weak battery, dirty carburetor, or worn belt early prevents repeat no-starts, uneven cutting, and premature wear on pulleys, spindles, and the starter system.

For repair planning and the right part lookups by model number, use how to find your appliance model number (and what it means for parts).

Last updated: February 2026

Most common symptoms to help you fix your riding mowers & tractors

Choose a symptom to see related riding mower and lawn tractor repairs.

Main causes: damaged tie rods, bent or worn wheel spindle, worn front axle, damaged sector gear assembly…

Main causes: dead battery, stale fuel, bad starter solenoid, ignition system problem, bad ignition interlock switch, clo…

Main causes: worn or broken blade belt, broken belt idler pulley, blade clutch cable failure, bad PTO switch, damaged ma…

Main causes: engine overfilled with oil, leaky head gasket or sump gasket, damaged carburetor seals, cracked fuel pump, …

Main causes: punctured tire or inner tube, leaky valve stem, damaged wheel rim…

Main causes: unlevel mower deck, dull or damaged cutting blades, worn mandrel pulleys, bent mower deck, engine needs tun…

Main causes: worn or broken ground drive belt, bad seat switch, transaxle freewheel control engaged, transaxle failure, …

Main causes: faulty battery, bad alternator…

Main causes: shift lever needs adjustment, neutral control needs adjustment…

Most common repair guides to help fix your riding mowers & tractors

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

How to replace the starter solenoid on a riding lawn mower

How to replace the starter solenoid on a riding lawn mower

Replace the starter solenoid if it doesn't click when you turn the ignition key.…

Repair time and Difficulty

 30 minutes or less
How to replace a riding lawn mower ignition coil

How to replace a riding lawn mower ignition coil

If you're not getting spark from a good spark plug, the problem could be the ignition coil. Follow these step-by-step in…

Repair time and Difficulty

 30 minutes or less
How to replace a riding lawn mower fuel filter

How to replace a riding lawn mower fuel filter

Help your mower run better by replacing the fuel filter during your riding mower's annual tune-up.…

Repair time and Difficulty

 15 minutes or less

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Jump-starting a riding lawn mower battery video

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