Bolens 831 Belt Size Guide

The Bolens 831 rear-engine rider uses three published belt sizes: 1/2" Wide x 63" I.D. for the cutter deck belt, 1/2" Wide x 64" I.D. for the cutter deck belt, and 1/2" Wide x 49" I.D. for the transmission drive belt. Match each belt to its correct position and OEM reference before ordering.
Belt replacement guide

Bolens 831 belt size & replacement chart

OEM references, belt positions and published dimensions for this rear-engine rider.

Equipment: Rear-Engine RiderBelt applications: 3OEM references: 4Sizes listed: 3
Distinct belts3
OEM references4
Belt functions2
Published sizes3
Replacement lookup

Bolens 831 belt chart

Match the belt function first, then confirm the OEM number and size.

Belt application OEM / replacement number Published size Listing SKU
Mower deck
Cutter Deck Belt
1738496, 1722238 1/2" Wide x 63" I.D. BEL6865
Mower deck
Cutter Deck Belt
1738511 1/2" Wide x 64" I.D. BEL6866
Transmission / motion
Transmission Drive Belt
1731719 1/2" Wide x 49" I.D. BEL6851
Application details

Which Bolens 831 belt do you need?

Cutter Deck Belt

Recorded OEM references: 1738496, 1722238. Published size: 1/2" Wide x 63" I.D.

Cutter Deck Belt

Recorded OEM reference: 1738511. Published size: 1/2" Wide x 64" I.D.

Transmission Drive Belt

Recorded OEM reference: 1731719. Published size: 1/2" Wide x 49" I.D.

Important: Confirm the belt position, deck size, serial range and machine configuration before ordering. Belts with the same length can use different widths or profiles.
Common questions

Bolens 831 belt FAQ

What belt does the Bolens 831 use?

The listed belt applications are Cutter Deck Belt, Cutter Deck Belt, and Transmission Drive Belt. Recorded OEM references: 1738496, 1722238, 1738511, and 1731719.

What are the Bolens 831 belt part numbers?

The recorded OEM references are 1738496, 1722238, 1738511, and 1731719. Match each number to the correct belt position before ordering.

What belt sizes does the Bolens 831 use?

Cutter Deck Belt: 1/2" Wide x 63" I.D., Cutter Deck Belt: 1/2" Wide x 64" I.D., and Transmission Drive Belt: 1/2" Wide x 49" I.D.

Why are multiple belts listed for the Bolens 831?

This machine has 3 recorded belt applications. Different belts can operate the mower deck, transmission, PTO, clutch or other drive components.

Can I match the Bolens 831 belt by length alone?

No. Width, profile, inside or outside circumference, belt position and OEM reference can all affect fitment. Match the belt function and OEM number first, then use the dimensions as a final check.