Products Description
High Branch Saw Gears – Replacement & Aftermarket Guide
Essential Drive Components for Pole Saw & Pruner Attachments
High branch saw gears are critical components within the gearbox of pole saws and pruner attachments, responsible for transferring power from the drive shaft to the cutting chain. These gears are designed to handle the high torque and speed required for overhead pruning and limb removal. Over time, gears can wear, strip, or become damaged due to normal use, lack of lubrication, or contact with foreign objects. Replacing worn gears is essential for restoring cutting performance and preventing further damage to the gearbox and drive system. Available in various configurations including bevel gears, worm gears, and complete gearhead assemblies, these components are offered as genuine OEM parts and quality aftermarket alternatives.
Technical Profiles & Materials
Bevel Gear Transmission – Many high branch saws use a bevel gear system to change the direction of power transmission from the vertical drive shaft to the horizontal cutting head . This design allows the saw head to operate at a 90-degree angle to the pole, enabling efficient overhead cutting.
Worm Gear Drive – The worm gear is a common component in power pruner gearcases, interacting with the bevel gear to drive the chain . These metal gears are placed in the gearcase and may require an Allen wrench or hex key when replacing .
14-Tooth Tensioning Gear – Some pole pruners use a special 14-tooth gear with a square arbor that allows the tensioning bolt to fit into it . This gear turns the bolt which moves the chain tensioner, enabling proper chain adjustment . Available as an authentic Echo replacement part (V651000310) for use with pole pruners and pruner attachments .
Complete Gear Assembly Kits – Comprehensive kits are available that include multiple gears, bearings, and associated hardware for a full gearbox overhaul. The Gear Assembly Kit (530071646) fits Poulan, Husqvarna, and Craftsman pole saws and trimmers . Clean all old grease from the housing before installing new gears, as it may contain tiny pieces from the old stripped gears .
Technical Specifications
| # | Component | Part Number | Specification |
|---|---|---|---|
| 1 | 14-Tooth Tensioning Gear | V651000310 | Square arbor, used with slotted gear for chain tension adjustment |
| 2 | Worm Gear | V652000021 | Metal, placed in gearcase to interact with bevel gear |
| 3 | Gear Assembly Kit | 530071646 | Complete kit with gears and hardware |
| 4 | Gearhead Assembly | Various | 26mm x 9T, fits 26-82cc engines, 150ml oil capacity |
| 5 | Spline Compatibility | 7T or 9T | Check your machine's central drive shaft |
Products Application
Pole Saw Gearbox Overhaul
Worn gears are a common cause of power loss, grinding noises, and reduced cutting efficiency in pole saw attachments. The gearbox can be disassembled, old grease removed, and new gears installed to restore proper function. The gear assembly kit (530071646) provides all components needed for a full gearbox rebuild .
Replacement for Damaged Tensioning Gears
The 14-tooth tensioning gear (V651000310) is a common wear item that can strip or become damaged. Replacing this gear restores proper chain tension adjustment on Echo and compatible pole pruners .
Complete Gearhead Attachment Upgrade
For multi-tool systems, aftermarket pole saw gearheads are available that fit 25.5-27mm outer diameter poles with 7 or 9 spline drive shafts . These complete assemblies include the gearhead, guide bar, saw chain, and automatic oil pump with 150ml oil capacity .
Quality and Craftsmanship Details
Products Package
About Us
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FAQ
Q: How do I confirm which gear fits my pole saw or pruner?
A:Check your equipment model number and the existing gear part number if possible. For Echo/Shindaiwa models, the 14-tooth gear is V651000310 and the worm gear is V652000021 . For Poulan/Husqvarna/Craftsman, the gear assembly kit is 530071646 . Also verify your spline count (7T or 9T) on the drive shaft.
Q: What are the symptoms that indicate the gears need replacing?
A: Common symptoms include grinding or whining noises from the gearbox, the chain not turning or turning intermittently, loss of cutting power, or the gearbox feeling rough when turned by hand. When disassembling, check for stripped teeth, excessive wear, or foreign debris in the grease .
Q: What maintenance should I perform when replacing gears?
A: Clean all old grease from the housing, as it may contain tiny pieces from the old stripped gears . Apply fresh high-quality grease to the new gears before installation. Check that all gears function freely before starting the engine . The gearbox should be lubricated at regular intervals to prevent premature wear.
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