Milwaukee 2631-20: problems, parts and running costs

Checked: 2026-10-19

Summary

The 2631-20 is a bare-tool 7-1/4 in. brushless circular saw for the M18 platform: 5,000 RPM, 2-1/2 in. cut depth at 90 degrees, 298 linear feet of 3/4 in. plywood per charge in TechGearLab’s test, and a 5-year warranty. The documented weak points are the trigger switch — forum owners trace intermittent running and no-start to arcing and carbon deposits — plus the missing bevel positive stops and a hex wrench holder that drops the wrench during use. Running cost is whatever you pay for an M18 battery and charger if you do not already own them. It is strong value at or below $179 for M18 owners, fair from $180-229, and weak above $229.

Common problems and fixes

Trigger switch failures — forum reports on The Garage Journal and Tools in Action describe intermittent running, sticking triggers and complete no-start, traced to arcing across the switch contacts that leaves carbon deposits blocking current. Fix.com lists the switch as a common replacement part at $32.95 and describes the same mechanism; some owners have replaced it themselves. The 5-year warranty covers switch replacement through Milwaukee’s eService. [9][10][11]
No bevel positive stops — there are no positive stops at common angles such as 22.5 degrees, so precise angle cuts need more attention; TechGearLab flagged the missing stops and the 22.5-degree marker as a drawback for precision work. No fix; set the angle carefully. [2][4]
Hex wrench holder drops the wrench — the holder is poorly designed and the wrench tends to fall out due to vibrations during use. Workaround: keep the wrench in a pocket or on a lanyard. [4]
Weight — at 9.0 lbs with a 5.0 Ah battery it is among the heavier cordless circular saws in its class. No fix. [2]
Blade-right orientation — the blade is on the right, which some right-handed users find less intuitive for cut-line visibility; Milwaukee has not released a blade-left version for the US market. No fix. [3]
Framing blade in the box — the included 24-tooth blade is a framing blade, so cut quality on visible surfaces may require a higher-tooth-count blade. Swap in a finishing blade for finish work. [5][10]

Parts and consumables

Trigger switch — $32.95 at Fix.com, listed as a common failure part for this model; the documented repair for intermittent running and no-start. [11]

Yearly running cost

Not enough data. No battery price, replacement interval or electricity figure was reported. The documented ownership cost: the saw is a bare tool, so anyone new to M18 must add a battery and charger, and battery cost is a significant additional expense for users not already in the M18 ecosystem. [7]

When it is a good buy

At or below $179: strong value for M18 ecosystem users who want a full-size cordless framing saw; the 5-year warranty and proven cutting performance justify the price. The 2018 launch price was $179 bare. [3]
$180-229: fair value; TechGearLab listed it at $199 when it tested the saw in 2019, and Power Tool Insider lists the bare tool at $229.00. [2][6]
Above $229: weak value unless you specifically want this form factor or find a strong price match. [6]

[2][3]