Black and Decker CM2040 Cordless Electric Mower.

Motor will not start when switch is engaged. I have confirmed that the motor and the switch and battery are working correctly direct wired motor to battery, used continuity tester on switch and rest of wiring, connections, etc., and think the wiring and mechanical bits are correct. It appears that there’s a safety of some sort between the battery and a circuit board, presumably checking for connection, voltage, polarity — the components are all buried in resin, so not user repairable, so I am guessing this is what has failed. I can’t find a

Experienced gardeners share their insights in answering this question :
Hi, there’s a parts list available here:


Manual here, HTH.

Sears PartsDirect

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The circuit breaker may have tripped.

Then check around the blade and clear any debris that may be blocking it. Reattach the spark plug boot and reinsert key. Wait 30 seconds so the breaker can self-reset, then try restarting.

Electric lawnmowers may cut out for two main reasons: A faulty power switch or a loose cable connection. An overheating motor can cause the thermal cut out to trip.
This can be as simple as the lawn mower having run out of fuel or battery, or in the case of electric mowers, the cable coming out of the socket. Also check cables, fuses and breakers for electric mowers. Trimming too much grass in one go can cause the lawn mower to get bogged down which will make it stop.
In Summary. Most problems and issues seen in lawn mowers are easy fixes that you can do yourself and parts cost well under the price you would usually pay for a new lawn mower. This means that in most cases, it`s much cheaper to repair your lawn mower than buy a new one – but not in every case.
Lawn mowers can overheat due to a number of different reasons, from the weather down to the state of the grass and even because of the way you use them. Here are a few common causes of mowers overheating.
In terms of engine life, a gas mower will run for 10 years or more, while a battery-powered mower will need to be replaced after about five years, on average.
Electric lawn mowers require little maintenance and are extremely easy to start, unlike their gas counterparts.
Electric lawn mowers require little maintenance and are extremely easy to start, unlike their gas counterparts.
Considering lawn mowers tend to sit for months during the wintertime, it`s normal to expect a lawn mower battery to last three or four years.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Lawn scarifier motor runs slow than starts to smoke
ANSWER : What sort of scarifier is it?

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Bosch electric lawn mower wont start, how do I fix it?
ANSWER : Cable damaged …renew cable . ..if does not work try condenser.

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I have had a poulan pro 550 series push mower for almost 1 year at the end of the season last year the mower would start briefly and then stop. i have cleaned out the air filter and that did not help.the mower started, i made one revolution around the yard 3/4th of the way the mower quit. I then primed the mower it started then quit and now it will not start at all. Does anyone have any suggestions of what to do. Thanks
ANSWER : There is a little spring that works the carburetor arm. If that popped off then the mower will not run.

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I have a black and decker lawn mower which is electric and it suddenly stopped working. I checked the power cord and it seems to be fine. When I try to start the lawn mower, I hear the click sound but the mower does not start

Any ideas or suggestions is highly appreciated.



ANSWER : Took the mower to the Black and Decker warehouse where they replaced the switch in the handle. It cost $53.73 total.

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ANSWER : No doubt the brushes have decided they need replaced .

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I have trouble starting a toro walk behind mower
ANSWER : All, I thought my carb was shot, so I replaced it. Still, start but no run (and had to use starting fluid). THEN!!! I noticed the spring to the “rev limiter” (just below and towards rear of carb) was not “tight”. The stupid bracket that holds the end of that spring had been bent down ~1/16″ and that caused all this heartache. CHECK YOUR REV LIMITER!!!

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Electric motor runs but well below full power, and over heats quickly. Can I fix this?
ANSWER : It could just need the bearings cleaned and lubed, but it might need them replaced or their could be partial shorts in the motor windings, which would likely make it junk. Perhaps try the bearings, but either bring it in or replace it beyond that.

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Lawn mower cranck but wont start…
ANSWER : Since you already checked for spark and air I would drain all the fuel out of it and check that fuel for water. Over time some lawn mowers end up with contaminated fuel. You can see the water sitting on the bottom of the fuel if you let it stand for a bit in a small plastic bowl.

Be sure to empty and dry out you fuel can as well. Especially if the mower stopped running right after a refuel. Which is a good sign your gas can is contaminated too.

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