John Deere — Belt Alignment and Tension
Maintenance · Belt / small pulley / tension arm
From a John Deere service manual — check it applies to your exact model before use.
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Procedure
- Remove the Safety Shield and inspect the belt for wear and alignment.
- Place a straight edge on the outer edge of the Large Pulley and measure distance to the belt edge (Point A).
- Measure the same distance at the Small Pulley (Point B); loosen the set screws on the Small Pulley and adjust until both distances are equal, then tighten.
- Check for free rotation of the Tension Arm; grease the provided fitting regularly.
Tools required
- straight edge Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Proper alignment will reduce belt and pulley wear.
Source: John Deere service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.