failure mode
FM-28: The Optional Dust Port Will Not Fit, Stays Loose, Clogs, Or Extracts Poorly
The optional two-piece dust port cannot seat over the upper guard, will not stay
Diagnostic overview
The optional two-piece dust port cannot seat over the upper guard, will not stay
Likely Root Causes
- Back half tab is not in the casting notch or halves are misaligned
- Two mounting screws are loose, missing, wrong, or the port is cracked
Quick Checks
- The port seats firmly with its tab and two screws, leaves all guards/adjustments free, stays clear, and carries visible dust into a working extractor during a test cut.
Repair Preview
- Remove the battery, fully loosen the depth lever, and remove any hose before inspecting the port.
- Clear chips dry and align the back half over the upper guard with its locating tab fully in the casting notch, then align the front half.
- Install and secure the two correct mounting screws, restore the depth setting, and confirm the port does not obstruct the guard, shoe, or adjustments.
- - Connect a clear compatible hose to a proven vacuum and make one controlled scrap cut - replace a cracked or nonfitting port, and use authorized service if t
This is a preview of the troubleshooting guidance included in the full repair manual.
Common Fixes
- Optional dust port kit
- Hang hook and optional dust port
- Upper blade guard
- Depth lever, guide, and scale
Related symptoms
The Optional Dust Port Will Not Fit, Stays Loose, Clogs, Or Extracts Poorly
The optional two-piece dust port cannot seat over the upper guard, will not stay
Included in the full manual
- root cause analysis
- tools needed
- step-by-step repair procedure
- diagrams
- exploded views
- post-repair checks
Public pages show a preview only. Purchase the full manual to download complete repair steps, diagrams, and verification procedures.