Bosch GKE 18V-15 Cordless Pruner Saw User Manual

Quick guide for the Bosch GKE 18V-15 and GKE 18V-20 cordless pruner saws, covering assembly, chain tensioning, oiling, operation, and troubleshooting.

Table of contents

Quick guide from the manual

This document provides essential instructions for the Bosch GKE 18V-15 and GKE 18V-20 cordless pruner saws. It covers safe operation, assembly, maintenance, and troubleshooting. Always read the full safety instructions before use.

Device Description

The pruner saw is designed for sawing wood such as branches, planks, and wooden beams at ground level. It is not intended for felling trees or cutting mineral materials.

Assembly and Chain Tensioning

Place the pruner saw on a flat surface.
Ensure the tensioning wheel (2) is turned fully counter-clockwise.
Insert the saw chain (12) into the chain bar (13) slot, ensuring the correct running direction (16).
Place the chain bar (13) on the fastening bolt (17) and loop the chain around the drive sprocket (20).
Attach the SDS cover (10) and partially secure it with the clamping knob (11).
Rotate the tensioning wheel (2) clockwise until the chain is partially tensioned.
Turn the tensioning wheel (2) clockwise (+) until the chain can be lifted approx. 2–3 mm.
Tighten the clamping knob (11) and fold down the bracket.

Operation

Switching On: Remove the chain cover, insert the battery, hold the saw with both hands, press the lock-off button (4), and then the On/Off switch (8). Release the lock-off button once the chain moves.

Switching Off: Release the On/Off switch (8). Remove the battery and attach the chain cover after use.

Maintenance and Lubrication

The pruner saw is not supplied filled with oil. Fill the oil reservoir with chain saw oil before use. Regularly check the oil level and ensure the automatic oiler is functioning by checking for an oil trail on a light-colored surface.

Safety

Always hold the saw with both hands.
Do not operate the saw on a ladder or above shoulder height.
Be aware of kickback; avoid sawing with the tip of the chain bar.
Remove the battery before any maintenance or transport.

Manufacturer information

Bosch

Brand profile

Manufacturer website https://www.bosch.com Support https://www.bosch.com/contact

Practical help

Common problems

Pruner saw fails to operate

Check if the battery is discharged, not fully connected, or if the motor protector has activated. Allow the motor to cool if necessary.

Saw chain will not move

Check if the battery is discharged, the area under the SDS cover is clogged, or if there is no oil on the saw chain.

Saw chain dry

Refill the oil reservoir, clean the oil seal/passage, or check if the chain needs retensioning.

Before use

Check that the saw chain is properly lubricated.
Ensure the chain is correctly tensioned (2-3 mm lift).
Verify that all guards and handles are fitted and undamaged.
Ensure the battery is fully charged.
Check that the oil reservoir is filled with chain saw oil.

Specs in practice

Chain speed (no-load): 7.2 m/s for both models.
Chain bar length: 15 cm for GKE 18V-15, 20 cm for GKE 18V-20.
Max. cutting diameter: 13 cm for GKE 18V-15, 18 cm for GKE 18V-20.

Model compatibility

Compatible with Bosch GBA 18V and ProCORE18V batteries.
Use only Bosch-approved chain saw oil.
Use only replacement guide bars and saw chains specified by the manufacturer.

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Manual page author

Michael Turner

Technical manual editor

Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.