UNB Replacement Drive Belt 88843 for Bush HOG RDTH72 ATH720 FTH720 TD-1700 — 5/8" x 155" OD, direct-fit

UNB Replacement Belt 88843 is a direct-fit 5/8" x 155" outside-dimension drive belt made to replace the original Bush HOG belts on RDTH72, ATH720, FTH720 and TD-1700 mower decks.

This replacement belt is designed for turf and grooming mowers that use an outside-circumference specification. It matches the 88843 OEM reference and provides the correct outside-dimension measurement so you can restore belt routing, tensioning and deck drive performance after belt failure or routine maintenance. Note: this item is sold without manufacturer warranty and must be returned unused within 30 days if needed.

How do I confirm the 88843 belt fits my mower?

Always verify fit by matching the OEM part number listed on your mower or in the owner’s manual. If the original belt is broken, measure its total outside circumference to confirm the 5/8" x 155" size listed for this replacement.

• Check the OEM sticker under the hood or seat for part numbers.
• Measure your existing belt's outside circumference when snapped.
• Compare the 5/8" width and 155" outside-dimension before ordering.

What should I know about installation and pulley adjustments?

Belt alignment and pulley tension are essential for long life. Many mower designs include idler pulleys or adjustable brackets to set correct tension; consult your deck’s manual for the exact procedure and torque settings.

• Inspect idler pulleys and bearings for wear before installing the new belt.
• Use the mower manual to locate adjustment points and proper routing diagrams.
• Set tension per OEM guidelines—over-tightening shortens belt life.

What are the product specifics and limitations?

This UNB replacement corresponds to OEM reference 88843 and is sized by outside circumference only. It is intended as a direct replacement for the listed Bush HOG models but does not come with a manufacturer warranty.

• Replacement part number: 88843 (Technology Parts Store fitment).
• Compatible models: Bush HOG RDTH72, ATH720, FTH720, TD-1700.
• Dimensions: 5/8" width by 155" outside-dimension.
• No warranty provided by manufacturer; returns accepted within 30 days if unused.

How should I return or exchange an unused belt?

Returns are accepted within 30 days, but all belts must be in new, unused, and resalable condition. Belts showing signs of installation, dirt, grease or damage will not be accepted.

• Keep original packaging and avoid installing the belt if you plan to return it.
• Belts must show no marks, grease, or stretch from use.
• Contact the seller for return authorization and shipping instructions.

Who is this for: The UNB 88843 replacement belt is aimed at homeowners, landscapers and service technicians who maintain Bush HOG RDTH72, ATH720, FTH720 or TD-1700 mower decks and need a correctly sized outside-dimension belt for deck drive repair or scheduled replacement. It’s best for those who can confirm OEM part numbers or measure an original belt’s outside circumference and who accept that the product is supplied without a manufacturer warranty.