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TORO TIMEMASTER 30-IN (21199) Blade Hitting Each Other

CONF DIAGNOSIS ACTION
96%
CONF
Toothed Timing Belt
The Dual-Force deck relies on this cogged belt to maintain the specific timing between the two blades. If the belt stretched, broke, or jumped teeth during an impact, the blades will no longer be held in their non-interfering 90-degree phase, causing them to collide at the center of the deck.
SKU: 120-3335
VIEW ON AMAZON #CommissionsEarned
2%
CONF
Blade Driver/Adapter
These adapters are designed with sacrificial lugs that act as a mechanical fuse. If the blade hits a stationary object, these lugs shear off to protect the engine and spindle, but this allows the blade to rotate freely out of time with the secondary blade, resulting in constant clashing.
SKU: 121-9100
VIEW ON AMAZON #CommissionsEarned
2%
CONF
Blade Spindle Assembly
If the internal bearings or the spindle shaft itself have been compromised or bent, the blade may wobble or sit at an incorrect angle. This geometric deviation can cause the blade tip to intersect with the adjacent blade's plane of rotation even if the timing belt is still intact.
SKU: 139-6573
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DIY Repair Guide

Watch exactly how to replace the Toothed Timing Belt.

// NOTICE: This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.

PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.

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