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Description
1144 640 7101 – STIHL Worm Gear for MS 661 C-M Chainsaw (Genuine OEM Part)
The STIHL 1144 640 7101 Worm Gear is a genuine OEM oil pump drive worm engineered specifically for the STIHL MS 661 C-M chainsaw. This precision component transfers rotational power from the crankshaft to the oil pump, enabling consistent and reliable bar and chain lubrication during heavy-duty cutting operations.
Manufactured to STIHL original factory specifications, this worm gear is designed for accurate engagement, smooth rotation, and long service life under the extreme torque, heat, and continuous operating conditions of professional-grade chainsaws.
Product Details
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Manufacturer Part Number: 1144 640 7101
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Brand: STIHL
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Part Name: Worm Gear / Oil Pump Drive Worm
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OEM Status: Genuine STIHL OEM Replacement Part
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Application: Oil pump drive system
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Function: Transfers engine rotation to oil pump
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Material: High-strength, wear-resistant polymer or composite (OEM specification)
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Condition: New
Compatibility
The 1144 640 7101 STIHL Worm Gear is designed for use with:
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STIHL MS 661 C-M Chainsaw
This component installs as a direct OEM replacement where part number 1144 640 7101 is specified in the oil pump or lubrication drive assembly.
Function and Benefits
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Drives the chain oil pump consistently and efficiently
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Ensures proper bar and chain lubrication
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Helps prevent oil pump failure and lubrication loss
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Designed for precise fit and smooth engagement
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Built to withstand high RPM and professional-use demands
Product Overview
The worm gear is a critical part of the lubrication system, directly affecting oil delivery to the cutting equipment. The STIHL 1144 640 7101 Worm Gear for MS 661 C-M helps maintain correct oil pump operation, reduces wear on the bar and chain, and supports long-term chainsaw reliability.
This STIHL genuine OEM worm gear is the correct replacement solution for restoring factory-designed lubrication performance on the STIHL MS 661 C-M chainsaw.
