Kobalt Miter Saw Parts List: Model Numbers & Diagrams

A Kobalt miter saw parts list is tied to your saw’s exact model number, not its item number or blade size, so find the model number first. The SM1850LW manual, for example, prints both numbers on its cover, and only the model number matches its parts pages. This guide shows where to look, how to read the list, which symptoms point to which part, and when to call Kobalt.

Find Your Kobalt Miter Saw Model Number First

The Kobalt manual we read for this guide separates two numbers. On the cover of the Kobalt SM1850LW owner’s manual hosted by Lowe’s, the saw is listed as ITEM #0358937 and MODEL #SM1850LW. The item number is the retail catalog number. The model number is what the parts pages are organized around, and it is the one to search or read to a support agent.

The same manual says the machine’s nameplate carries the serial number and the manufacturing date code, and it asks you to write both on the cover for future service. It does not say where the nameplate sits, and placement varies by saw, so check the motor housing and the base with a flashlight. Photograph the plate before you start any repair.

1. Read the nameplate: copy the full model number, serial number and date code exactly as printed.
2. Check the manual cover: if you still have it, the model number is printed there next to the item number.
3. Check your Lowe’s receipt or online order history: it shows the item number and product name, which gets you to the right manual even if the nameplate is unreadable.
4. Note the blade size: the manual lists blade diameter and arbor size under specifications, which helps you confirm you are reading the right document.

Kobalt model numbers on saws of this type tend to start with SM. Manual pages titled SM1815LW, SM1850LW, SM2517LW and SM3017LW all turned up in our search, and each is a different saw with a different parts list. Treat any model number you read online as an example, never as a substitute for the number on your own saw.

Where to Get the Parts List and Exploded View

Option 1: The Parts Pages in Your Owner’s Manual

The SM1850LW manual puts its replacement parts list and exploded views at the back, on pages 38 to 43. A copy of your manual is the safest starting point because it is written for your exact saw. If yours is lost, search the model number plus “manual” and look for the PDF hosted by Lowe’s, like the one linked above.

Option 2: Lowe’s and Kobalt Customer Service

Kobalt is a Lowe’s brand, so Lowe’s is the first place to ask. The SM1850LW manual says to call customer service at 1-888-3KOBALT (1-888-356-2258) for replacement parts, with hours of 8 a.m. to 8 p.m. Eastern, Monday through Friday. That number was printed in this one manual, so confirm it against your own manual or the Lowe’s site before relying on it. Have the model number, serial number and purchase date in front of you.

Warranty matters here. That manual offers replacement parts for defects for three years from the retail purchase date, but it excludes normal wear of moving parts and states the warranty is void if the product is used for commercial purposes. Your saw may carry different terms, so read the warranty page in your own manual.

Option 3: Third-Party Parts Sites for Older Saws

For saws Lowe’s no longer supports, general parts sites such as PartSelect, RepairClinic and eReplacementParts publish diagrams sorted by model number. Use them to confirm what a part is called, then cross-check the description and size against the parts list in your own manual before you pay. If the two disagree, trust the manual.

How to Read a Kobalt Parts List: A Real Example

A parts list is just a table. In the SM1850LW manual each row has an I.D. code, a description, a size and a quantity, and the I.D. codes start with X and are unique to that saw. The rows below are copied from that manual to show what a list looks like. They apply to the SM1850LW only, so do not order from this table unless that is your model.

Description as printed	I.D. in that manual	Qty	What it tells you
CARBON BRUSH ASS’Y	X4QG	2	Brushes come as a pair, matching the manual’s advice to replace both
BRUSH HOLDER ASS’Y	X4QF	2	Listed separately from the brush itself
BRUSH COVER	X4QH	2	The cap you unscrew to reach the brush
BLADE	X4QZ	1	The saw ships with one blade
ARBOR BOLT M8*16	X4R1	1	Size is part of the description, so match it
ARBOR COLLAR	X4R0	2	Two collars sit on the arbor
BLADE WRENCH	X4PE	1	The wrench that comes in the box
TRIGGER	X4PB	1	Switch parts are listed in pieces
DUST BAG	X4PY	1	Small items are listed separately too

Two habits save returns. First, copy the description and the size column, not just the I.D. code. Second, check the quantity column: a saw with two brushes and two collars needs the right count in your cart, not one of each.

Match the Symptom to the Part

Before you order anything, run through the troubleshooting page of your manual. These rows come from the SM1850LW troubleshooting tables and show how a symptom narrows down to a short list of parts.

Symptom	Causes the manual lists	What to look up
Motor does not start	Blown fuse, worn brush	Check the 15A time-delay fuse or breaker first, then the carbon brushes
Heavy sparking when the switch is released	Worn brush	Carbon brush assemblies
Blade takes more than 10 seconds to stop	Brushes sticking, loose arbor bolt	Clean or replace brushes, retighten the arbor bolt
Blade hits the table	Misalignment	No part needed: follow your manual’s adjustment section

The last row is the point of the table. Several complaints that look like a broken part are an adjustment. If your cuts are the problem rather than a dead saw, our guide on how to adjust a miter saw for square cuts walks through the checks.

Carbon Brushes: The Part the Manual Spells Out

Brushes are the one wear part where the SM1850LW manual gives a firm number. It says to replace both brushes when either has less than 1/4 inch of carbon remaining, or when the spring or wire is damaged or burned. Do not swap just the shorter one.

1. Unplug the saw and let the head rest in its upright position.
2. Remove the black plastic brush cap on the side of the motor. The manual warns it is spring-loaded, so unscrew it slowly.
3. Pull the brush out and measure the carbon. Look at the spring and wire for burn marks.
4. Fit the new brush, pressing the metal part into the hole where the carbon sits, then repeat on the other side.
5. Tighten each cap snugly but do not overtighten.

One more detail from the manual: if you reinstall the same brushes, put them back the way they came out. It says that avoids a new break-in period, which reduces motor performance and increases wear.

Blades: Match Diameter and Arbor Before Brand

The SM1850LW manual is blunt: use only a 7-1/4 inch blade, with a 5/8 inch arbor, and never a larger one. Other Kobalt miter saws take larger blades, so the blade size printed in your own specifications decides the purchase, not what a product page says is popular. Our Kobalt 10-inch miter saw parts guide covers the 10-inch saws specifically, and the Kobalt miter saw model review compares the lineup.

To change a blade on the SM1850LW the manual has you unplug the saw, raise the lower guard, loosen the cover plate screw without removing it, swing the cover plate up, then hold the arbor lock button while turning the wrench clockwise to loosen the arbor bolt. Leave the inner collar in place, and note which way each piece faces before you pull it off. Other saws can differ, so follow your own manual.

The pick in the box near the top is a 10-inch, 60-tooth blade with a 5/8 inch arbor. That is a fit only if your specifications say the same. It does not apply to a 7-1/4 inch saw like the SM1850LW.

Blade Guard and Safety Parts: Genuine Parts Only

The lower blade guard is the part to be strictest about. The SM1850LW manual says not to use the saw if the lower guard is damaged until it has been replaced, and it says to use identical replacement parts when servicing this double-insulated tool. Order the guard and its spring by the description in your parts list, from Lowe’s or Kobalt, and not from a look-alike listing.

• Clean the guard with a damp cloth with the saw unplugged. The manual warns that solvents can make the plastic cloudy and brittle.
• Lubricate the guard pivot only lightly with household oil, because the manual notes sawdust clings to excess oil.
• If the guard sticks, hangs open or will not return, stop using the saw and have it inspected before the next cut.

When a Repair Is Not Worth Chasing

The same parts list shows how the motor is sold. It lists items such as an armature assembly, a field assembly and bearings as separate assemblies, so a worn motor usually means several parts, not one. If the brushes are fine, the fuse is fine and the saw still will not run, compare the cost of those parts with a new saw before you start. Parts that are not in stock, or a saw outside its warranty window, tilt the math toward replacing it. Our Kobalt 7-1/4 compound miter saw guide and 10-inch sliding saw write-up help if you decide to move on.

Frequently Asked Questions

Where is the model number on a Kobalt miter saw?

On the nameplate. The SM1850LW manual says the nameplate carries the serial number and date code, and the model number is printed on the manual cover. Nameplate position varies, so check the motor housing and base.

What is the difference between the item number and the model number?

The item number is the retail catalog number, and the model number identifies the saw for parts. The SM1850LW manual cover shows item 0358937 and model SM1850LW. Use the model number for parts lookups.

How do I order Kobalt miter saw parts?

Read the part description and I.D. from your manual’s parts list, then call Kobalt customer service or ask Lowe’s. The SM1850LW manual lists 1-888-3KOBALT for replacement parts. Have the model number, serial number and purchase date ready.

When should I replace the carbon brushes on a Kobalt miter saw?

The SM1850LW manual says to replace both brushes when either has under 1/4 inch of carbon left, or when the spring or wire is damaged or burned. Heavy sparking and a saw that will not start are the usual signs.

Can I keep using the saw with a damaged blade guard?

No. The SM1850LW manual says not to use the saw until a damaged lower guard has been replaced. Replace it with the identical part from your parts list.

Can I use a generic blade on a Kobalt miter saw?

Yes, if the diameter and arbor size match what your manual specifies. The SM1850LW takes only a 7-1/4 inch blade with a 5/8 inch arbor, so a 10-inch blade will not work on it.

Next Steps

Write down the model number, find the parts list in your manual, and match the symptom before you spend money. Most Kobalt miter saw repairs come down to brushes, a blade or a guard, and each of those has a clear rule in the manual. When the list and your saw disagree, call Kobalt customer service.