Porter Cable 637 all-purpose saw Parts

Porter-Cable makes the 637 saw; it’s a Porter-Cable power tool model. When you’re shopping for replacement parts or troubleshooting, matching the exact model number (637) helps ensure you get the correct switch, cord, brush, or shoe for your saw.

What “637” means for parts and repairs

The model number identifies the specific design and parts list for your saw. For Porter-Cable tools, small changes between models can affect fit and wiring.

• Confirm the model number is 637 on the saw’s nameplate
• Use the model number when searching diagrams and parts lists
• Match electrical parts by voltage rating and terminal style
• Match mechanical parts by mounting pattern and length
• Replace worn items in sets when applicable (for example, both motor brushes)

Common parts people replace on a reciprocating saw

Even without a model-specific parts list shown here, these are the most frequently serviced items on corded reciprocating saws like the Porter-Cable 637.

Symptom	Most common part area	What to check first
Won’t start	Power cord, switch, brushes	Cord damage, switch feel, brush wear
Runs intermittently	Cord, switch, brush springs	Loose connections, worn brushes
Sparks heavily	Brushes, commutator	Brush length, burning smell
Excess vibration	Shoe, blade clamp, fasteners	Loose shoe screws, worn clamp

Quick checks before ordering parts

Unplug the saw before inspecting anything.

• Inspect the cord for cuts, kinks, or a loose strain relief
• Check that the blade clamp fully locks the blade
• Look for brush caps (if equipped) and check brush length
• Sniff for a burnt odor near the motor housing (overheated windings)
• Verify the outlet works by testing another tool

Why it matters

Porter-Cable made multiple reciprocating saw designs over the years; using the exact 637 model number prevents ordering a switch, brush, or cord set that looks similar but won’t fit or wire correctly.

For help locating the model tag and using it to find the right diagrams, use how to find your appliance model number (and what it means for parts).

Last updated: February 2026

To replace the blade on your Porter Cable 637 reciprocating saw, unplug the saw first, then open the blade clamp (lever or twist collar), pull the old blade out, slide the new blade fully into the clamp, and lock the clamp back down.

Safety first (do this every time)

• Unplug the saw (corded) or remove the battery (cordless)
• Let the blade cool before touching it
• Wear gloves and eye protection
• Keep fingers away from the clamp opening while locking it
• Tug the blade after locking to confirm it is fully seated

Blade replacement steps (typical tool-free clamp)

1. Disconnect power.
2. Open the clamp: flip the clamp lever or rotate the twist-lock collar (depending on the clamp style on your 637).
3. Remove the blade: pull it straight out.
4. Insert the new blade: push the shank in until it bottoms out.
5. Lock the clamp: release the lever or rotate the collar back to the locked position.
6. Check engagement: pull on the blade; it should not slip out.

Which blade direction should I use?

Most reciprocating saws accept the blade teeth facing forward for standard cutting. Some blades can be installed teeth up for flush cuts or tight spots.

Install direction	Best for	Tradeoff
Teeth forward	Fast, controlled cuts	Less access for flush cuts
Teeth up (if your clamp allows)	Flush cutting near surfaces	Can feel less stable

If the blade will not come out or will not lock

• Work the clamp lever or collar through a full open-close cycle; sawdust can bind the mechanism
• Add a small amount of light oil to the clamp area, then wipe off excess
• Inspect the blade shank; bent or mushroomed shanks can jam
• If the clamp still slips, the clamp parts may be worn and need replacement

Why it matters

A blade that is not fully seated can wobble, cut poorly, and damage the blade clamp. A secure clamp improves cut accuracy and reduces vibration on your Porter Cable 637.

For general DIY safety guidance before working on power tools, use are diy appliance repairs safe.

Last updated: February 2026

Porter-Cable (including the Porter 637 reciprocating saw line) is owned by Stanley Black & Decker. For parts and model identification, the key is matching the exact model number 637 to the correct diagrams and replacement items.

What “owned by” means for Porter 637 parts

Ownership mainly affects branding and distribution, but your repair success depends on identifying the right Porter 637 configuration and then matching the failed component (cord, switch, brushes, gearbox, shoe, or blade clamp).

What to check on your saw

• Model number and any type/style number on the nameplate
• Voltage and amperage rating on the label
• Corded vs. cordless (the 637 is typically corded)
• Visible wear items (brush caps, cord strain relief, blade clamp play)
• Any burning smell, sparking, or intermittent power

Quick troubleshooting guide (before ordering parts)

Use these checks to narrow down what failed.

Symptom	Most common cause	What to do next
Won’t start	Bad power cord, switch, or worn brushes	Inspect cord, test switch continuity, check brush length
Runs then cuts out	Loose wiring, failing switch, brush spring issue	Check connections, inspect brushes and holders
Heavy sparking	Worn brushes or commutator damage	Replace brushes first; inspect commutator condition
Weak cutting / vibration	Worn shoe, loose clamp, internal wear	Check shoe and clamp tightness; inspect drive components

Why it matters

Knowing Porter-Cable is under Stanley Black & Decker helps explain why branding and packaging may look different over time, but your repair still depends on matching the Porter 637 model details so you get compatible electrical and mechanical parts.

Helpful related DIY resource

For electrical diagnosis steps (common on corded reciprocating saw repairs), use our guide: how to use a multimeter to test electrical parts video.

Last updated: February 2026

On a Porter Cable 637 all-purpose saw, “637” is the tool’s model number used to identify the correct parts and diagrams for that specific reciprocating saw. It is not an IRS form or tax ID; it is simply the model identifier for the saw.

Where to find the 637 model number on the saw

We use the model number to match the right power tool parts (switch, cord, brushes, gearbox components) to your exact tool.

• Check the nameplate/label on the housing (often near the handle or motor area)
• Look for a stamped plate or printed sticker with the model
• If the label is worn, check for the model on the original case or paperwork
• Confirm you are reading the model (637) and not a serial number

Why the model number matters for parts

Even within the same brand, small design changes can affect fit and wiring. Using the correct model number helps avoid ordering the wrong component.

What you’re looking at	What it means	Why it matters
Model number (637)	Identifies the saw design	Ensures parts match your tool
Serial number	Production identifier	Helps date/track the tool, not parts fit
Part number	Identifies a replacement part	Used when ordering a specific component

If you meant “Form 637” instead

“Form 637” is an IRS registration related to certain excise tax activities; it is unrelated to Porter Cable model 637 tools.

Helpful next step

If you are trying to confirm the correct model label location or how to interpret the numbers, use how to find your appliance model number (and what it means for parts).

Last updated: February 2026