FixBeforeBuy

Category: Power Tools

Brand: Bosch

Model: GKS18V-25, GKS18V-25N

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 22, 2026, 10:05 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

Price

$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.

Supported model

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Common Symptoms

The correct battery is fitted, but pressing a lock-off button and the trigger produces no motor response.

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The motor and shaft turn, but the blade stalls or slips on the washers during a normal supported cut.

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The foot can be set to an angle, but moves after the bevel lever is locked or drifts during cutting.

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At a locked 0-degree bevel, a sound blade is not square to the foot.

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With no lock-off button pressed, the trigger can move, or a lock-off button remains depressed instead of resetting.

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The foot rocks on a flat surface, is bent or cracked, or moves despite locked adjustments.

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The trigger does not spring fully outward, or the motor/blade keeps running after the trigger is released.

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A suitable bag or vacuum collects little dust while the port remains secure and aimed.

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With the blade clear of material, the saw sounds slow, hunts, or repeatedly rises and falls in speed.

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The 360-degree dust port is jammed or loose, or a compatible hose/coupler will not stay attached.

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The blade pinches or stalls in the kerf, or the saw reacts backward during a cut.

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The blade turns steadily, but wood cuts slowly, burns, or needs heavy feed pressure.

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No-load operation is smooth, but the saw bounces, chatters, or vibrates as soon as cutting begins.

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The external structure is visibly cracked, loose, crushed, melted, or missing material even if the saw still runs.

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The saw or pack smokes, leaks, sparks, melts, smells burned, swells, vents, or hisses.

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Failure Modes

FM-01: FM-01 TOOL IS COMPLETELY DEAD - NO MOTOR RESPONSE

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
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FM-03: FM-03 BATTERY WILL NOT SLIDE IN, SEAT, OR LATCH

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
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FM-04: The battery is latched in the saw and does not come

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
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FM-06: FM-06 LOCK-OFF DOES NOT BLOCK THE TRIGGER OR RETURN TO REST

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-07: FM-07 TRIGGER STICKS OR THE MOTOR CONTINUES AFTER RELEASE

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
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FM-08: FM-08 NO-LOAD SPEED IS WEAK, UNEVEN, OR SURGES

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-13: The shaft lock is engaged, but the blade stud cannot be

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-14: FM-14 SHAFT LOCK WILL NOT ENGAGE OR HOLD

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
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FM-17: FM-17 BLADE SLIPS UNDER ORDINARY CUTTING WITH THE STUD PROPERLY SET

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-23: The lower guard resists the lift lever or cannot move fully

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-24: FM-24 LOWER GUARD WILL NOT CLOSE PROMPTLY

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
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FM-27: The selected depth will not remain fixed after the depth

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-29: FM-29 BEVEL SETTING SLIPS OR WILL NOT HOLD THE SELECTED ANGLE

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
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FM-30: FM-30 SAW CUTS OUT OF SQUARE WITH THE BEVEL SET TO ZERO

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-31: FM-31 FOOT IS BENT, CRACKED, LOOSE, OR WILL NOT SIT FLAT

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
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FM-32: FM-32 DUST EXTRACTION IS WEAK OR THE DUST PATH IS BLOCKED

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
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FM-33: FM-33 DUST PORT WILL NOT SWIVEL, HOLD POSITION, OR RETAIN THE HOSE

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-34: FM-34 BLADE BINDS, STALLS, OR KICKS BACK IN THE CUT

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-35: FM-35 BLADE ROTATES STEADILY BUT CUTTING IS SLOW, BURNS, OR REQUIRES FORCE

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-36: FM-36 SAW CHATTERS OR VIBRATES ONLY WHEN THE BLADE CONTACTS THE WORK

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-37: FM-37 HOUSING, HANDLES, BATTERY RAILS, OR VENTS ARE CRACKED OR DAMAGED

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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FM-38: FM-38 SMOKE, BURNING ODOR, MELTING, LIQUID, SPARKS, OR BATTERY DAMAGE

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
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fm-p17-b-2db8b3a0: A compatible battery cannot travel fully into the housing or will

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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fm-p17-b-80df6c98: 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
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fm-p21-b-2e87769a: The blade is damaged, wrong for wood, or fails the required

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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fm-p22-b-26b8fdae: The shaft lock is engaged, but the blade stud cannot be turned

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
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fm-p27-b-6b131ac7: The lower guard resists the lift lever or cannot move fully into

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
View details
fm-p29-b-beec475a: The selected depth will not remain fixed after the depth lever is

Full repair guide includes

  • Root Cause Analysis
  • Required Tools
  • Replacement Parts
  • Step-by-step Repair Procedure
  • Safety Precautions
  • Verification Checklist
View details

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