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139-0684 PUMP-FUEL (4DW)
$34.99
139-0684 PUMP-FUEL (4DW)
$34.99
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- 120-3335 – Toro Synchronous Belt (Genuine OEM Part)
Description
120-3335 – Toro Synchronous Belt (Genuine OEM Part)
The Toro 120-3335 is a genuine OEM synchronous (timing) belt designed to keep the dual-blade spindle system properly synchronized on select Toro TimeMaster® and TurfMaster® walk-behind lawn mowers. This belt ensures both blades rotate in precise timing, preventing blade collision and maintaining even, efficient cutting performance.
Manufactured to Toro’s exact specifications, this belt delivers correct tooth profile, strength, and durability required for high-load mowing applications.
Product Details
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Manufacturer Part Number: 120-3335
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Brand: Toro
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Part Type: Synchronous / Timing Belt
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System: Blade drive / Spindle synchronization
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OEM Status: Genuine Toro replacement part
Function
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Synchronizes dual mower blades to rotate in precise timing
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Prevents blade contact and internal deck damage
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Maintains even cut quality and consistent blade speed
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Transfers power efficiently between spindle assemblies
Compatible Toro Equipment (Common Applications)
This belt is widely used on Toro 30-inch and 76 cm dual-blade walk-behind mowers, including:
Toro TimeMaster® Series
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TimeMaster 30 in. Lawn Mowers
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TimeMaster TM76 / TM76K (76 cm models)
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Rental and HD variants
Toro TurfMaster® Series
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TurfMaster 30 in. Commercial Walk-Behind Mowers
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TurfMaster 76 cm Commercial Walk-Behind Mowers
⚠️ Due to multiple production changes, always confirm fitment using your mower model and serial number.
How It’s Used
The 120-3335 belt installs between the dual blade spindles inside the mower deck. It uses a toothed (synchronous) design to keep both blades timed correctly. Proper belt tension and alignment are critical during installation to prevent premature wear.
Suggested Maintenance
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Inspect belt regularly for cracking, tooth wear, or stretching
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Replace if blades lose synchronization or noise develops
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Always replace with an OEM synchronous belt—standard V-belts will not work
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Check spindle pulleys and tensioners when replacing the belt
The Toro 120-3335 Synchronous Belt is a critical safety and performance component that ensures reliable blade timing and smooth operation on Toro dual-blade walk-behind mowers.

