One of the key maintenance components that often needs replacing is the mower belt. Ensuring you have the correct belt size is essential for optimal performance and longevity of your equipment.
In this comprehensive guide, we provide a detailed Craftsman Lawn Mower Belt Size Chart that covers belt lengths, widths, and types for a wide range of Craftsman models.
Craftsman Lawn Mower Belt Size Chart
Riding Mower
| Model Number | Deck Size | Belt Size (L x W) | OEM Part Number | Belt Type |
|---|---|---|---|---|
| 917.27364 | 42″ | 95.5″ x 1/2″ | 144959 | Deck Drive Belt |
| 917.271011 | 42″ | 95.5″ x 1/2″ | 144959 | Deck Belt |
| 917.276022 | 48″ | 109.5″ x 5/8″ | 173437 | Deck Belt |
| 917.276013 | 42″ | 95.5″ x 1/2″ | 144959 | Deck Belt |
| 917.272911 | 42″ | 95.5″ x 1/2″ | 144959 | Deck Drive Belt |
| 917.272082 | 42″ | 95.5″ x 1/2″ | 144959 | Blade Belt |
| 917.258492 | 46″ | 101.5″ x 5/8″ | 197253 | Deck Belt |
| 247.203720 | 46″ | 101.5″ x 5/8″ | 954-04219A | Deck Belt |
| 917.270532 | 38″ | 90″ x 1/2″ | 130801 | Deck Belt |
| 917.258870 | 42″ | 95.5″ x 1/2″ | 144959 | Deck Drive Belt |
Related Are Craftsman Mower Decks Interchangeable(Explained)
Lawn Tractor
| Model Number | Deck Size | Belt Size (L x W) | OEM Part Number | Belt Type |
|---|---|---|---|---|
| 917.272751 | 46″ | 101.5″ x 5/8″ | 197253 | Deck Belt |
| 917.272960 | 48″ | 109.5″ x 5/8″ | 173437 | Deck Belt |
| T240 | 46″ | 101.5″ x 5/8″ | 954-05021 | Deck Belt |
| T140 | 42″ | 95.5″ x 1/2″ | 144959 | Deck Belt |
| 917.273140 | 42″ | 95.5″ x 1/2″ | 144959 | Deck Belt |
| CMXGRAM1130043 | 46″ | 101.5″ x 5/8″ | 954-05021 | Deck Belt |
| T2000 | 42″ | 95.5″ x 1/2″ | 144959 | Deck Belt |
Garden Tractor
| Model Number | Deck Size | Belt Size (L x W) | OEM Part Number | Belt Type |
|---|---|---|---|---|
| 917.275660 | 54″ | 140″ x 5/8″ | 532140294 | Deck Belt |
| 917.276351 | 48″ | 109.5″ x 5/8″ | 173437 | Deck Belt |
| T3200 | 54″ | 140″ x 5/8″ | 954-05022 | Deck Belt |
| 917.275900 | 50″ | 134″ x 5/8″ | 954-04077 | Deck Belt |
| 917.276101 | 54″ | 140″ x 5/8″ | 532140294 | Deck Belt |
Related Craftsman Battery Compatibility Chart(For All Types)
Zero Turn
| Model Number | Deck Size | Belt Size (L x W) | OEM Part Number | Belt Type |
|---|---|---|---|---|
| 247.204420 | 50″ | 134″ x 5/8″ | 954-04240A | Deck Belt |
| 247.204381 | 54″ | 140″ x 5/8″ | 954-05022 | Deck Belt |
| 247.204400 | 46″ | 101.5″ x 5/8″ | 954-04219A | Deck Belt |
Push Mower
| Model Number | Deck Size | Belt Size (L x W) | OEM Part Number | Belt Type |
|---|---|---|---|---|
| 917.388830 | 21″ | 36″ x 3/8″ | 402009 | Drive Belt |
| 11A-A2T2791 | 21″ | 36″ x 3/8″ | 754-04001 | Drive Belt |
| 11A-B0BL791 | 21″ | 36″ x 3/8″ | 754-04001 | Drive Belt |
Related Craftsman Garage Door Opener Remote Compatibility Chart
Self-Propelled Mower
| Model Number | Deck Size | Belt Size (L x W) | OEM Part Number | Belt Type |
|---|---|---|---|---|
| 917.378940 | 22″ | 36.75″ x 3/8″ | 532402009 | Drive Belt |
| 917.376672 | 22″ | 37″ x 3/8″ | 532402009 | Drive Belt |
Note: Verify the model number under the mower seat and consult the owner’s manual or Craftsman support for precise belt sizes.
How to Measure a Lawn Mower Belt
If your model is not listed above or the sticker on your mower has faded, you can still determine the correct belt size by manually measuring the belt path and pulley diameters. Here’s how:
- Remove the Old Belt (if available): Measure its total length and width using a flexible tape measure.
- If Belt is Missing:
- Wrap a string or cloth measuring tape around the pulleys in the exact routing path.
- Measure the length of the string and the width of the pulley groove to determine belt size.
- Check Manual: The owner’s manual or Craftsman’s website may list OEM part numbers for belts.
Related Craftsman LT2000 Drive Belt Diagram(Fixed)
Tips for Replacing Craftsman Lawn Mower Belts
- Always replace with the correct OEM or high-quality aftermarket belt.
- Avoid using belts that are slightly off in size, they will wear out faster or damage mower components.
- Inspect pulleys and spindle bearings for wear when replacing belts.
- Refer to the belt routing diagram (usually found under the mower hood or deck) to avoid improper installation.
FAQs
How long is a Craftsman 42-inch deck belt?
A standard Craftsman 42-inch deck belt is typically:
- Length: 95.5 inches
- Width: 1/2 inch
- Type: V-belt
- OEM Part Number: 144959
This belt fits many Craftsman 42″ riding mowers, including older models like 917.271011 and newer ones in the T100 series.
Related Lawn Mower Belt Size Chart(For All Brands + Models)
What size belt for Craftsman T110?
The Craftsman T110 riding mower (42″ deck) uses:
- Belt Size: 95.5″ x 1/2″
- OEM Part Number: 144959
- Type: Deck belt (Blade Drive)
- Fits: Craftsman T110 with a 42-inch deck
- Common Notes: This belt runs from the engine pulley to the mower deck pulleys to power the blades.
If you’re replacing it, always verify the model number on your mower frame to ensure the correct fit, as Craftsman sometimes varies specs slightly across years.
How do I know what size belt I need for my deck?
To determine the correct deck belt size for your mower:
- Check the Owner’s Manual – It usually lists the correct belt size and OEM part number.
- Model Number Lookup – Use the mower’s model number (often found under the seat or on the frame) to look up parts online.
- Measure the Old Belt (if available):
- Lay it flat and measure the total length and width.
- If frayed or stretched, go by the OEM specs rather than worn length.
- Use a String (if belt is missing):
- Run a string along the belt path, mark where it completes a loop, and measure that length.
- Inspect Pulley Grooves:
- Match the belt width and type (V-belt or flat) to the pulley groove.
Related Lawn Mower V Belt Cross Reference Chart(For All Brands + Models)
How long is a size 42 belt in inches?
When referring to a “42-inch deck belt” (like on Craftsman mowers), the “42” refers to deck width, not the belt length.
So, a typical size 42 deck uses a belt that is:
- Length: 95.5 inches
- Width: 1/2 inch
- Type: V-belt
- Example OEM Part: 144959
Keep in mind: different 42” deck models (especially zero-turns vs riding tractors) may have different belt lengths, so always verify by model.
5. What size drive belt does a Craftsman LT1000 take?
The Craftsman LT1000 (popular 42″ deck riding mower) has two belts:
- Deck Belt (Blade Drive):
- Size: 95.5″ x 1/2″
- OEM Part Number: 144959
- Drive Belt (Transmission Drive):
- Size: 90″–92″ x 1/2″ (depending on transmission type and year)
- OEM Part Number: Often 138255, 130801, or 532130801 (check specific model)
Tip: The drive belt connects the engine pulley to the rear wheels’ transmission, allowing the mower to move.
