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Three small metal worm gears for Stihl chainsaw oil pump

LAHDEK

LAHDEK Oil Pump Worm Gear 3 pcs for Stihl 024 026 MS240 MS260 PRO

SKU CH-XN6P-9BP0B

Three-pack of oil pump worm gears replacing OEM 1121 640 7110 and 7111 for Stihl 024, 026, MS240 and MS260 PRO chainsaws

  • Compatible with Stihl 024 026 MS240 MS260 PRO chainsaws
  • Three oil pump worm gears included per pack
  • Replaces OEM parts 1121 640 7110 and 1121 640 7111
  • Designed for 2-stroke petrol chainsaw engines
  • Brand new LAHDEK replacement components

Oil Pump Worm Gear Set

This three-piece set supplies replacement oil pump worm gears for Stihl 024, 026, MS240 and MS260 PRO chainsaws. It suits owners and technicians who service these petrol-powered models and need a direct OEM substitute for part numbers 1121 640 7110 and 1121 640 7111. The gears are manufactured for two-stroke engine lubrication systems.

Two-Stroke Lubrication Interface

The worm gear meshes with the oil pump drive inside the chainsaw crankcase and is sized for the specified Stihl models only. It will not fit saws outside the 024, 026, MS240 or MS260 PRO range because the drive geometry and oiling circuit differ. Buyers who need gears for other displacements or brands must source the correct part for those applications.

Straightforward Press-Fit Installation

Installation requires opening the crankcase, removing the worn gear and pressing the new worm gear onto the pump shaft. The most common issue is damaging the gear teeth or shaft if a proper press or drift is not used. Clean all old sealant and debris before reassembly to prevent oil leaks or premature wear.

Highlights

  • Compatible with Stihl 024 026 MS240 MS260 PRO chainsaws
  • Three oil pump worm gears included per pack
  • Replaces OEM parts 1121 640 7110 and 1121 640 7111
  • Designed for 2-stroke petrol chainsaw engines
  • Brand new LAHDEK replacement components

Specifications

No published specifications for this item yet.

Questions about this item

Should I buy the three-gear pack or look for a single gear for my MS260?

The pack contains three identical oil pump worm gears so you have spares for future service on your MS260 or MS240.

Will these gears keep the bar oil flowing at the rate Stihl intended for the 026?

They are direct replacements for OEM 1121 640 7110 and 1121 640 7111, restoring the original oil delivery on 024, 026, MS240 and MS260 saws.

Do the gears fit the standard Stihl oil pump drive on the MS240?

Yes — they match the factory worm gear used on the 024, 026, MS240 and MS260 pump assemblies.

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