I own a cordless Black & Decker 19" rechargeable mulching mower, CMM 1200, 24V. There are days that it starts beautifully, and others where it remains quiet and uncooperative. Temperature seems to affect it, as well as humidity. Also, it seems to need the undercarriage cleaned frequently. Any suggestions?

Mulching mowers are notorious for needing to be cleaned out frequently. The problem usually is the cutting height. The lower it is, the faster it gets clogged up.

Cutting wet grass doesn't help this situation either, it actually makes it clog up much faster.

Set the cutting height to about 3", and wait until the grass is dry before you cut it. This should help with the cuttings buildup.

As a landscaper, I deal with lawnmowers on almost a daily basis, and on cold mornings, the mowers are sluggish and don't want to run well.

If you keep your mower stored in a weather proof building with a consistent temperature and humidity level, there shouldn't be many issues with startup. Start it up and let it idle at half choke before cutting.

I hope this helps you.
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