MTD Big Dog Excel Industries OEM deck belt part number 797720 for mower deck application

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Big Dog Excel Industries MTD Deck Belt Part Number 797720 | OEM Replacement Part

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Big Dog Excel Industries Deck Belt — Part #797720
MTD 797720 — Deck Drive Belt
Also known as: mower deck belt, drive belt, cutting deck belt, Big Dog Excel deck belt
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Specifications
Attribute Detail
Part Number 797720
Brand MTD / Big Dog / Excel Industries
Part Type Deck Drive Belt
Application Mower Cutting Deck
OEM Quality Yes — Genuine Replacement

The MTD deck belt, part number 797720, is a genuine OEM replacement drive belt designed for the cutting deck on Big Dog and Excel Industries mowers manufactured under the MTD brand family. This component — also referred to as a mower deck belt, cutting deck drive belt, or blade drive belt — transfers power from the engine to the deck spindles to drive the blades. It is a critical wear item that should be replaced when cracking, fraying, glazing, or slipping is observed to maintain proper cutting performance.

Key Features▼
OEM-Grade Belt Construction

Part 797720 is manufactured to OEM specifications, ensuring the same dimensions, flex rating, and tensile strength as the original factory belt. This guarantees correct fitment and eliminates the slipping or squealing common with inferior aftermarket alternatives.

Deck Drive Application for MTD Mowers

Designed specifically for the cutting deck drive system, belt 797720 transfers rotational power from the deck pulley system to the blade spindles on Big Dog and Excel Industries mower platforms built under the MTD product family.

Direct Cross-Reference and OEM Part Number

MTD part number 797720 is the correct OEM cross-reference for this deck belt. Using the genuine part number ensures you receive the exact replacement intended for your machine, avoiding compatibility issues from non-OEM substitutes.

Compatible with Big Dog and Excel Industries Platforms

Belt 797720 is compatible with select Big Dog zero-turn and Excel Industries mower models that use MTD-sourced components. Always verify your model and serial number against the parts diagram to confirm fitment before installation.

Compatible Equipment▼

MTD deck belt 797720 is a genuine replacement part sourced for Big Dog and Excel Industries mower models built on the MTD platform. Confirm your model number and serial number against your parts manual before ordering to ensure correct fitment of part 797720.

Part number 797720 is compatible with select Big Dog zero-turn mowers and Excel Industries commercial mower models that source their deck drive components from MTD, including units where this belt drives the cutting deck spindle system.

  • Big Dog Mowers — MTD-sourced deck belt models (verify serial)
  • Excel Industries Mowers — MTD deck drive platform models
  • MTD OEM applications using part 797720
  • Mower decks requiring replacement of original factory deck belt 797720
Common Questions▼

Q: What mowers use MTD deck belt 797720?

A: Part 797720 is used on select Big Dog and Excel Industries mower models that source their cutting deck drive belt from MTD. Check your mower's model and serial number against the OEM parts diagram to confirm 797720 is the correct deck belt for your unit.

Q: Is 797720 a genuine OEM MTD belt or an aftermarket replacement?

A: Part 797720 is a genuine OEM-specification deck belt for MTD, Big Dog, and Excel Industries mowers. It is manufactured to meet the original factory dimensions and material standards, ensuring proper fit and reliable performance on your cutting deck.

Q: How do I know when to replace the deck drive belt 797720 on my Big Dog mower?

A: Replace MTD belt 797720 when you notice visible cracking, fraying, glazing, or stretching on the belt surface, or if you experience blade slipping, unusual squealing, or loss of cutting power on your Big Dog or Excel Industries mower deck.

Q: Can I use part 797720 on Excel Industries mowers with an MTD deck system?

A: Yes, part 797720 is designed for Excel Industries mower models that use the MTD-sourced deck drive system. Always cross-reference your model number and serial number with the OEM parts diagram to confirm 797720 is the correct deck belt before installing.

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