Makita E-400MP Edger and EM-409MP Line Trimmer: Two Practical 40V Attachments Worth a Look

Introduction

Summer is when these outdoor power tools earn their keep, and after a full season of regular use, two Makita attachments stand out for how well they fit into an interchangeable power head system: the E-400MP edger and the EM-409MP line trimmer. Both have seen plenty of real work, and both prove that you do not need the biggest battery in the range to get garden jobs done properly.

One Power Head, Multiple Attachments

Both attachments clip onto Makita power heads across the range: 18 volt, 18 volt x2, 40 volt, and even the older petrol units. For trimming and edging, the lower voltage power heads are perfectly adequate. The 40 volt head earns its keep with heavier accessories such as the pole saw, water pump, large rotary brush, sweepers, and the cultivator, which genuinely benefits from the extra power. For these two attachments, any of the heads will do the job fine.

Makita E-400MP Edger: Clean Edges Made Simple

The E-400MP is a deliberately simple tool: a spinning steel blade that you run along the side of your concrete. On the 40 volt power head it has speed settings, and while any speed works, speed two is the most comfortable for regular edge work. Over 40 metres of edging, the battery still showed four bars, and on a 4.0Ah battery you can expect hundreds of metres on a single charge.

A useful technique is tilting the tool slightly outward as you work. This cuts a wider groove in the dirt, which makes future passes easier and keeps grass from creeping right up to the concrete. Running it dead straight works too, but you will need to edge far more often. Maintenance is minimal: the adjustable wheel sets the working height for your frame, an occasional drop of oil keeps things smooth, and the official Makita replacement blade, made in Japan, is easy to swap when the original wears down. Just clear the occasional clump of wet mud from the tool, and keep the blade off the top of the concrete itself.

Comfort, Maintenance, and Battery Life

One thing worth noting: this edger is slightly shorter and lighter than others in the range, which makes it a good pick for users who are a bit shorter and want a more manageable tool. Combined with the adjustable wheel and near-zero maintenance routine, it is an easy attachment to live with season after season.

Makita EM-409MP Line Trimmer: Entry-Level but Capable

The EM-409MP sits at the entry level of the line trimmer range, but for typical home garden use it is more than enough. On easy grass, speed two on the 40 volt head handles everything comfortably. Speed one is too slow for anything but the lightest work, as it tends to twist grass rather than cut it. For thicker growth, top speed powers through without hesitation.

What it will not do is demolish massively thick vegetation, but for ordinary weeds and lawn edges it performs without complaint. The nylon cord wears down over time, especially when trimming against concrete, so you bump the head while it spins to release more line as you go. A tip worth remembering: keep ornaments and garden features clear of long grass before you start trimming.

Blade Options and Heavier Growth

Beyond the line trimmer head, a metal blade attachment is available for the same power head. These blades are excellent for pushing through thick grass because they run at full length and do not need constant bumping to advance. The trade-off is that they should never be run next to concrete, where they wear down quickly and shorten until they are useless. For work against hard surfaces, stick with the nylon cord head, which breaks off more easily and can be tapped to feed fresh line. Both attachments come with the tools needed to swap heads easily.

Buying Advice

If your main job is keeping a clean line between lawn and path, the E-400MP edger is the pick, especially for shorter users or anyone who wants a light, low-maintenance tool. If general trimming is the priority, the EM-409MP covers typical home garden needs at an entry-level commitment, with the option to upgrade to a metal blade for thicker patches. Since both share the same power head system, buying one attachment often leads sensibly to adding the other.

Conclusion

Both attachments deliver where it matters: enough power for their intended jobs, long battery runtime, and genuinely low upkeep. For anyone already in Makita’s interchangeable system, or considering joining it, these two are practical, well-matched additions to a garden toolkit.