Bosch GSA 18V-28 Professional Reciprocating Saw User Guide

Quick guide from the manual

This document provides essential information for the safe and efficient operation of the Bosch GSA 18V-28 Professional reciprocating saw. Always read the full safety instructions provided in the original manual before use.

Device Description

The GSA 18V-28 is a cordless reciprocating saw designed for cutting wood, plastic, metal, and building materials on a firm surface. It is suitable for straight and curved cuts. When using appropriate bi-metal saw blades, flush cutting is also possible.

Assembly

Removing the battery: Always remove the battery before performing any work on the tool (e.g., maintenance, changing tools, transport, or storage) to prevent accidental activation.

Inserting/changing the saw blade:

• Wear protective gloves when handling saw blades, as they are sharp and can become hot.
• Ensure the saw blade receptacle is free of material residue (e.g., wood or metal chips).
• Use only saw blades with a 1/2" universal shank.
• Push the saw blade (1) firmly into the receptacle (4) until it audibly engages. The locking sleeve (3) will rotate approx. 90° and lock the blade.
• If the blade does not lock, rotate the locking sleeve (3) approx. 90° in the direction of the arrow until it locks in the open position, then insert the blade again.
• Check that the blade is securely seated by pulling on it.

Operation

Switching On/Off: Press the lock-off switch (7) to the left, then press and hold the on/off switch (8). To switch off, release the on/off switch (8) and press the lock-off switch (7) to the right.

Controlling the stroke rate: The stroke rate can be variably adjusted by pressing the on/off switch (8) to varying extents.

Operating modes: Use the orbital action adjusting lever (9) to switch pendulum action on or off. Switch it on for soft/medium materials (e.g., wood, plastic) and off for clean cuts in thin or hard materials (e.g., sheet metal, steel).

Working Advice

• Plunge cutting: Only for soft materials like wood or gypsum board. Do not plunge cut metal.
• Flush sawing: Use elastic bi-metal saw blades to cut protruding elements (e.g., water pipes) directly at the wall. Ensure the blade is longer than the workpiece diameter to avoid kickback.
• Utility hook: Use the hook (6) to hang the tool (e.g., on a ladder). Ensure the blade is protected from accidental contact when hung.

Maintenance and Cleaning

Always keep the tool and ventilation slots clean for safe operation. Clean the saw blade receptacle with a soft cloth or brush. If the tool becomes very dirty, it may lead to functional faults; avoid cutting materials that generate large quantities of dust from below or overhead.