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The DeWalt DCST990M1 40V MAX* XR string trimmer offers a 15-inch swath and gear drive torque, paired with a compact 4.0Ah battery for dependable all-around trimming.
Categories : garden
SKU : WOR-GAR-514
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The DeWalt DCST990M1 40V MAX* XR string trimmer brings the same potent gear-drive performance as the DCST990 series, bundled with a 4.0Ah battery and charger. It's a popular choice for medium-sized yards where you want enough runtime to finish the job without carrying a heavier pack. The brushless motor and patented gear drive amplify torque to handle grass and weeds confidently.
The 15-inch cutting swath covers more ground than most trimmers, and the bump feed head keeps 0.080-inch line ready. For tougher growth, switch to 0.095-inch line.
Use the variable speed trigger for precise trimming, and toggle the Hi/Lo switch for power or runtime. The 4.0Ah battery gives you a balanced, lightweight feel.
Line replacement is straightforward: remove the bump feed head, wind fresh line onto the spool, and feed the ends through the eyelets. The manual covers every step, and the line size is 0.080-inch (0.095-inch also fits).
Includes 4.0Ah battery and charger for moderate yards
Patented gear drive and brushless motor deliver power and runtime
15-inch swath with 0.080-inch line (0.095-compatible)
Hi/Lo speed control for power or extended runtime
Model: DCST990M1
Feed Type: Bump
Motor Type: Brushless
Power Source: 40V MAX* Battery
Product Type: String Trimmer
Cutting Swath: 15 in
Line Diameter: 0.080 in (compatible 0.095 in)
Speed Settings: Variable with Hi/Lo
Included Battery: 4.0Ah
Seller: Workbench World
MPN: DCST990M1
The 4.0Ah kit is ideal for everyday trimming. You get the same brushless motor and gear drive as the 6.0Ah version, but with a lighter backpack.
Use Hi mode for thick grass and overgrowth, or Lo mode for extended runtime on regular maintenance.
Rotate the head to edge along walkways and flower beds without changing tools.
Keep the bump feed head loaded with fresh line. Replacing line takes just a few minutes.
Runtime depends on conditions, but the 4.0Ah pack typically handles a medium-sized yard. For very large properties, consider stepping up to a 6.0Ah battery.
Yes, all 40V MAX* batteries work with the DCST990M1. A larger battery will extend runtime.
It uses 0.080-inch line and is compatible with 0.095-inch line for heavier weeds.
Remove the bump feed head, take out the empty spool, wind the new line evenly, and feed the ends through the eyelets. Full instructions are in the user manual.
Love my trimmer.
The 4.0Ah battery is enough for my small yard. Trimmer runs hot but fine.
I downsized from a gas trimmer. This one is much quieter and starts instantly. The 4.0Ah battery gives me about 30 minutes, which is just right for my lawn. The adjustable handle helps with my back. It's well balanced. The only thing I'd change is the line loading, it took a while to figure out. But the manual helps.
Great trimmer for the price. Battery lasts a full hour if I don't go full speed.
Easy start.
I bought this for my weekend property. It's got plenty of power for the grass and weeds. The battery charges quickly. The 4.0Ah is lighter than the 6.0, so it's easier on the arms. The trimmer is well built and feels solid. The only downside is the line breaks sometimes if I hit a rock, but that's normal. Overall, a good machine.
