Symptoms
- Blade falls out during use or when the trigger is pulled
- Blade wobbles side to side in the clamp
- Clamp lever doesn't click or feels loose
- Blade won't insert fully into the clamp
Likely causes
- CommonSawdust or metal shavings jammed in the clampDebris prevents the clamp jaws from closing fully on the blade.
- CommonBlade not pushed in all the way before releasing the leverThe shank needs to bottom out in the clamp before it locks properly.
- PossibleWorn or weakened clamp springAge and heavy use can wear out the spring tension that holds the blade.
- PossibleBent or damaged blade shankA bent shank won't seat correctly even in a good clamp.
What to do
- Unplug the saw or remove the battery before working on the blade clamp.
- Clean out sawdust and metal shavings from the clamp opening with compressed air or a brush.
- Insert a new, straight blade and push it firmly until it bottoms out before closing the clamp lever.
- Cycle the clamp open and closed a few times to check for smooth, firm movement.
- Try a couple of different blades to rule out a bent shank on one particular blade.
- If the clamp still won't hold a properly seated blade securely, it likely needs professional replacement.
Tools and parts
- Reciprocating saw
- Compressed air
- Replacement blades
Blade clamp assemblySearch: “reciprocating saw blade clamp replacement”
When to call a pro
If cleaning doesn't restore a firm lock, a tool repair shop can replace the worn blade clamp assembly.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.