BOSCH GKS18V-25 CIRCULAR SAW - REPAIR AND MAINTENANCE MANUAL Repair Manual
Detailed guide for diagnosing and repairing the Bosch GKS18V-25 cordless circular saw, including troubleshooting, maintenance, and safety instructions.
$39.99
Last updated Aug 7, 2026, 6:11 AM
Manual information
About this manual
Detailed guide for diagnosing and repairing the Bosch GKS18V-25 cordless circular saw, including troubleshooting, maintenance, and safety instructions.
0% Reported Successful Repair
$39.99
Full Manual Includes
- root cause analysis
- tools needed
- step-by-step repair procedure
- diagrams
- exploded views
- post-repair checks
Table of contents preview
- Bosch Gks18v-25 Circular Saw - Repair And Maintenance Manual
- The Six Things That Matter Most
- What This Model Actually Has
- Indicator And Signal Map
- Model-revision Warning
- The Power And Cut Path
- Normal Use Sequence
- Normal Behavior That Can Look Like A Fault
- What This Model Does Not Have
- Surges
- Or Axial Play
- Fm-38.
- FM-20, FM-21, FM-38.
- Diagnostic Map
- FM-01 to FM-11 cover power, controls, braking, shutdown, and heat. FM-12 to FM-22 cover blade compatibility, retentio...
This preview shows only a portion of the complete repair manual. Purchase to access the full repair documentation, downloadable PDF and detailed repair procedures.
Likely Root Causes
- Battery is discharged, incompatible, or not fully latched
- External battery contacts or rails are dirty or damaged
- Lock-off/trigger is not enabling the switch
- Internal controller, wiring, or motor fault
- Debris holds a lock-off button inward the switch/handle serviced.
- Button, spring, or linkage is broken
- Trigger and lock-off parts are misassembled
- Handle housing is cracked or distorted
- Sawdust or resin obstructs the external trigger repairs the switch/control.
- Trigger return or switch mechanism is damaged
- Handle impact has pinched the trigger
- Switch or controller has failed in the on state
- Battery charge or power capability is inadequate published order.
- Blade, guard, flange, or debris is creating drag
- Ventilation openings are obstructed Bosch service.
- Motor, bearings, or controller is failing
- Blade stud is under-tightened
- Oil, pitch, or debris is on the blade/washer friction faces
- Outer washer is reversed, worn, or damaged
- Blade demand is excessive or clutch/shaft is damaged
- Bevel lever is not fully locked
- Clamp/pivot surfaces are dirty
- Lever or clamp hardware is worn/damaged
- Foot or pivot is bent
- Zero stop is out of adjustment
- Pitch or debris affects the foot or blade reference
- Blade is warped or mounted incorrectly
- Foot, shaft, or bevel parts are damaged
- Drop or impact bent or cracked the foot
- Pivot or mounting fastener is loose/damaged
- Depth or bevel bracket is broken
- Housing/gearcase alignment is damaged
- Dust port or guard outlet is packed with chips
- Dust bag is over two-thirds to three-quarters full
- Hose is kinked, blocked, leaking, or the wrong adapter is used
- Vacuum is unsuitable, full, or has low suction
- Pitch or debris binds the swivel
- Port pivot, coupler, or upper guard is cracked/worn
- Wrong hose or adapter is being used
- Hose weight/routing pulls the port out of position
- Work is unsupported and the kerf closes
- Blade is dull, damaged, wrong, or set too deep
- Saw is twisted, fed backward, or side-loaded
- Hidden fastener, wet/warped stock, or loose adjustment changes the cut
- Blade is dull, pitch-coated, damaged, or wrong tooth design
- Standard/thick-kerf blade reduces cordless performance
- Depth is excessive or feed technique side-loads the blade
- Battery charge/power is low or material is unusually wet/dense
- Workpiece is loose, springy, or poorly supported
- Foot is not flat or the saw is being twisted/side-loaded
- Blade is dull, inappropriate, loose, or missing teeth
- Depth is excessive or feed is too hesitant/aggressive
- Drop, impact, crushing, or heat damaged the structure
- Fastener boss or handle mount cracked
- Battery rail or vent area deformed
- Prior unauthorized opening or repair damaged the housing
- Battery internal failure or short circuit
- Liquid or conductive debris entered the tool
- Motor/controller/wiring overheated or failed
- Impact, incorrect pack, or unauthorized repair created damage
Supported model
Related Models
Bosch
View details
Bosch
View details
Bosch
View details
Bosch
View details
Bosch
View details
Bosch
View details
Bosch
View details
Bosch
View details
Bosch
View details
Bosch
View details
Bosch
View details
Bosch
View details
Common Symptoms
View details
View details
View details
View details
View details
View details
View details
View details
View details
View details
View details
View details
View details
View details
View details
Failure Modes
Summary
The tool is completely dead with no motor response when the trigger is pressed, despite a correctly fitted battery.
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
FM-08 NO-LOAD SPEED IS WEAK, UNEVEN, OR
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
Support the battery, press the release, and slide it forward only to
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
Trigger sticks or the motor continues running after the trigger is released due to switch or trigger mechanism faults.
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
Remove the battery, wait for a full stop, and use only the supplied
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
FM-19 SPINDLE OR BLADE HAS EXCESSIVE RADIAL
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
The motor and shaft turn, but the blade stalls or slips during a normal supported cut due to clutch or blade retention issues.
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
Remove the battery and move the lower guard through its full travel
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
FM-29 BEVEL SETTING SLIPS OR WILL NOT HOLD THE
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
Stop cutting, remove the battery, and mark the current depth position FM-27
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
The foot can be set to a bevel angle, but the angle slips or drifts during cutting due to locking or pivot issues.
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
The foot is bent, cracked, loose, or will not sit flat, causing instability during use.
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
Dust extraction is weak or the dust path is blocked, reducing dust collection efficiency.
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
The saw or battery exhibits smoke, burning odor, melting, liquid leakage, sparks, swelling, venting, or other signs of severe damage.
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
1. Remove the battery and inspect the complete rail and latch path before applying
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
1. Support the battery, press the release, and slide it forward only to the secondary
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
1. Remove the battery and reject the blade before operating or attempting a cut.
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
1. Remove the battery, wait for a full stop, and use only the supplied wrench on the
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
1. Remove the battery and move the lower guard through its full travel using only the
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Summary
1. Stop cutting, remove the battery, and mark the current depth position on the scale.
Full repair guide includes
- Root Cause Analysis
- Required Tools
- Replacement Parts
- Step-by-step Repair Procedure
- Safety Precautions
- Verification Checklist
Related Manuals
View details
View details
View details
View details
View details
View details
View details
View details
View details
View details
View details
View details