Products Description
High Branch Saw Oil Pump – Automatic Oiling System Component
Essential Lubrication Component for Pole Saw & Pruner Attachments
The oil pump is a critical component of the automatic chain lubrication system on high branch saws and pole pruners. It delivers a continuous supply of bar and chain oil to the guide bar and cutting chain during operation, reducing friction, heat, and wear on the cutting components. A worn or damaged oil pump can cause the chain to run dry, leading to rapid bar wear, chain stretching, and reduced cutting performance. This replacement oil pump restores proper lubrication flow and protects your equipment from premature wear.
Technical Profiles & Materials
Automatic Chain Lubrication – The oil pump is driven by the engine or motor, delivering oil to the guide bar and chain only when the chain is running . This ensures consistent lubrication during cutting operations while preventing oil waste when the tool is idle.
Plunger-Style Pump Design – High branch saw oil pumps typically use a plunger-type mechanism that rotates and reciprocates within a barrel to draw oil from the reservoir and deliver it to the chain . The plunger assembly includes a gear that engages with the drive system, causing both rotational and reciprocating motion .
Adjustable Oil Flow – Many pole saw oil pumps feature an adjustable flow rate mechanism, allowing operators to increase or decrease oil delivery based on cutting conditions. The flow rate can typically be adjusted using an adjusting screw – turn clockwise for more oil, counter-clockwise for less .
O-Ring Sealing System – The plunger assembly uses O-ring seals to prevent oil leakage and maintain proper pump pressure. These seals are critical for ensuring the pump operates efficiently and does not allow lubricant to escape into unwanted areas of the housing .
Complete Pump Assemblies Available – Replacement oil pump assemblies are available for major brands including Poulan (530071645) , Echo/Shindaiwa, Zenoah (for PSZ2600 series), and Makita/Dolmar. Comprehensive repair kits are also available, including the pump housing, plunger, seals, and sometimes two pumps per pack .
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Poulan OEM Part No. | 530071645 |
| 2 | Compatible Brands | Poulan, Poulan Pro, Weedeater |
| 3 | Zenoah Compatibility | PSZ2600 series, 25.4cc trimmers |
| 4 | Pump Type | Plunger-style with rotating/reciprocating action |
| 5 | Drive Method | Driven by worm gear engaging pump gear |
| 6 | Sealing System | O-ring seals on plunger assembly |
| 7 | Flow Adjustment | Adjustable via screw (right = more oil) |
| 8 | Typical Symptoms of Failure | Chain running dry, inconsistent oil output, visible leakage |
| 9 | Installation Tools | Ratchet/socket, Torx screwdriver, snap ring pliers |
| 10 | Unit of Sale | 1 piece or multi-packs |
Products Application
Pole Pruner Oil Pump Replacement
Direct replacement when the chain runs dry despite oil in the tank, or when oil output is inconsistent. A worn pump is a common cause of insufficient chain lubrication on high-hour pole saws. The pump is located inside the gearcase housing and can be accessed by removing the sprocket cover, chain bar, and gearcase housing .
Preventative Maintenance
Replacing the oil pump proactively during routine servicing prevents chain and bar damage from insufficient lubrication. The pump should be inspected if the chain shows signs of running dry or if oil output becomes inconsistent. When replacing the pump, the plunger barrel should be aligned correctly with the two holes in the oil block to ensure proper oil flow .
Gearbox Overhaul
When servicing the pole saw gearbox, the oil pump is a key component to inspect and replace if worn. The pump assembly includes the barrel and plunger, and should be lubricated with fresh grease during reassembly. New O-ring seals should be fitted to prevent leakage .
Quality and Craftsmanship Details
Products Package
About Us
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FAQ
Q: How do I confirm which oil pump fits my pole pruner?
A:Check your equipment model number on the identification plate. For Poulan and Weedeater pole pruners, use OEM part number 530071645 . For Zenoah PSZ2600 series, the pump kit is designed for 25.4cc trimmer models . Always verify compatibility with your specific model before ordering.
Q: What are the symptoms that indicate the oil pump needs replacing?
A: The most common symptom is the chain bar and cutting chain not being lubricated properly, leading to the chain running dry during operation . You may also notice inconsistent oil output, visible oil leakage from the pump area, or the chain overheating and wearing prematurely.
Q: How do I replace the oil pump on a pole pruner?
A: The replacement process involves confirming low oil levels, removing the lower drive shaft, removing the sprocket cover and chain bar, opening the gearcase housing, removing the old pump assembly, and installing the new pump. When installing, ensure the two holes in the barrel align with the oil block and that the sprocket gear turns the new pump correctly .
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