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Loud grinding or squealing from the mower deck caused by worn or seized spindle bearings. Replacing the spindle assembly eliminates the noise and restores smooth operation.
Blades cutting unevenly or leaving uncut rows of grass due to a bent spindle shaft or failed bearings that allow the blade to wobble off-plane.
Severe vibration through the mower deck and handles caused by an imbalanced or damaged spindle assembly preventing the blade from spinning true.
Blade fails to spin or disengages under load due to a seized spindle that prevents the pulley from transferring belt power to the blade.
Spindle shaft visibly wobbles when the blade is spun by hand (engine off) — a clear sign of worn internal bearings requiring immediate replacement to prevent deck damage.
💡 Pro Tip: Is Your Spindle the Problem?
Your part is likely the culprit if you notice any of the following:
⚠️ Loud grinding, squealing or rumbling noise coming from the mower deck during operation
⚠️ Blades cutting unevenly or leaving uncut strips of grass
⚠️ Excessive vibration felt through the mower deck or handles
⚠️ Spindle shaft visibly wobbling, bent, or blade not sitting level under the deck
🔍 Diagnostic tip: With the engine OFF and spark plug wire disconnected, grab each blade tip and wiggle it up and down. Any play or roughness when spinning by hand indicates worn spindle bearings that need immediate replacement.
📦 What's in the Box
✅ 1× Mower Deck Spindle Assembly (Height 7-3/16", OD 5", 7-pt star shaft)
✅ 1× Grease Zerk fitting
✅ 1× Pulley Lock Nut
✅ 1× Blade Lock Nut + Washer
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Disclaimer: Compatibility information, part numbers, and model fitment data on this page are sourced from manufacturer databases and third-party references. While we strive for accuracy, please verify your appliance model number before ordering. Heima is not responsible for errors or omissions in compatibility listings.
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