Product Description
The 1125 640 3201 Oil Pump is a genuine STIHL lubrication system component designed to deliver a consistent supply of oil to the guide bar and chain during operation. This precision-engineered pump ensures smooth chain movement, reduced friction, and extended bar and chain life, making it a critical part of your saw’s reliability and cutting performance.

Key Features
✅ Part Number: 1125 640 3201
✅ Component Type: Oil Pump / Chain Lubrication Pump
✅ Function: Regulates and delivers oil to the bar and chain
✅ Material: High-strength, wear-resistant alloy and polymer components
✅ Quality: Genuine STIHL OEM part for exact fit and dependable operation

Benefits
✔️ Maintains Proper Bar & Chain Lubrication – Prevents overheating and premature wear.
✔️ Improves Cutting Efficiency – Supports smooth, consistent chain speed under load.
✔️ Protects Key Components – Reduces damage to bar rails, chain links, and sprocket.
✔️ Restores OEM Performance – Ideal replacement for worn, blocked, or failed oil pumps.
✔️ Long-Lasting Reliability – Built to withstand heat, vibration, and continuous operation.

Compatible With
Commonly suits STIHL 034, 036, MS 340, MS 360, and other 1125-series saws using this oil pump design.
(Always verify compatibility using your OEM parts diagram.)

Installation Tips
1️⃣ Ensure the saw is switched off and completely cool.
2️⃣ Remove the sprocket cover, bar, chain, clutch, and clutch drum.
3️⃣ Remove the oil pump retaining screws and extract the old pump.
4️⃣ Clean the oil passages and mounting area thoroughly.
5️⃣ Install the new oil pump and secure it using the original fasteners.
6️⃣ Reassemble all components and confirm oil delivery at the bar tip before use.