EasyApplianceParts is now PartSelect! We've merged our sites to provide a better shopping experience for you.   Full Details

Find Parts

Parts Departments

Top Model Types

Top Brands

Repair Help

Expert Repair Videos

Keep typing for more specific results...

DCST920B (Type 2) DeWALT Trimmer - Overview

Diagrams for DCST920B

See every part. Know exactly what you need.

Enter a part description. DIY Heroes keep it simple, eg. "belt" or "pump".

Search filter:
Clear Filter
Your search term must have 3 or more characters.
Gearcase Cover Assy. – Part Number: 90615764SV
$32.12
In Stock
Gearcase Cover Assy.
Part #90615764SV
This gearcase cover assembly encloses and protects internal gearing components. Built for durability, it helps maintain proper alignment while shielding parts from debris and damage.
Screw – Part Number: 608176-00
$6.40
In Stock
Screw
Part #608176-00
SPINDLE LOCK PLATE – Part Number: 90607066
$6.78
In Stock
SPINDLE LOCK PLATE
Part #90607066
Replacement Spool – Part Number: 90599025
$41.53
In Stock
Replacement Spool
Part #90599025
This is a genuine OEM sourced part used on the DeWalt DCST990M1 (Type 1) 40V 15" String Trimmer. The plastic and metal replacement spool is fastened to the gearcase assembly at the base of the trimmer. This item houses and dispenses the cutting line for trimming grass. A screwdriver is needed for the installation, and the replacement spool is sold individually.
SPINDLE – Part Number: 90601861
$7.93
In Stock
SPINDLE
Part #90601861
This spindle is a genuine OEM DeWalt replacement used on cordless string trimmers to support and rotate the cutting head properly during operation. Designed for durability and a precise fit, it helps maintain smooth head rotation and consistent cutting performance and is an ideal replacement when a worn or damaged spindle causes poor spool engagement or vibration.
MOMENTARY SWITCH – Part Number: 90600458
$6.40
In Stock
MOMENTARY SWITCH
Part #90600458
Pole Assembly – Part Number: 90625928
$31.94
In Stock
Pole Assembly
Part #90625928
Used on cordless string trimmers, this lower pole assembly serves as the main structural shaft connecting the motor housing to the handle for stable, balanced operation. It provides the rigidity needed for proper alignment and comfortable handling during trimming tasks. Designed for a precise fit, this assembly is ideal for replacing a bent or damaged shaft to restore proper trimmer balance, control, and dependable performance.
Screw – Part Number: 330019-15
$6.40
In Stock
Screw
Part #330019-15
SPOOL – Part Number: 90601087
$10.13
In Stock
SPOOL
Part #90601087
This string trimmer spool is a genuine OEM replacement designed for brushless cordless string trimmers. It functions as a bump-feed head, allowing smooth line advancement and consistent cutting performance during trimming. Made from durable plastic to handle everyday wear, it’s a practical replacement when the original spool becomes worn, damaged, or difficult to reload.
CLAMP – Part Number: 90615950
$6.40
In Stock
CLAMP
Part #90615950
Motor & Pinion Assy – Part Number: 90628853
No Longer Available
Motor & Pinion Assy
Part #90628853
Lock Nut – Part Number: 370023
$6.40
In Stock
Lock Nut
Part #370023

Questions And Answers for DCST920B

Ask our experts a question about this model and we'll get back to you as soon as possible!

Sort by:
  • 1
Sorry, we couldn't find any existing answers that matched.Try using some different or simpler keywords, or submit your new question by using the "Ask a Question" button above!
Larry - For model number DCST920B
June 5, 2026
I need a new blade, the one that trims the line if you bump feed to much line. My Trimmer is DCST920, with out the “B”
Chris Boyle Profile
Hi Larry, thank you for your inquiry. The blade you are looking for comes with the guard assembly, part number PS12489090. Glad to be of help!
$17.42
In Stock
GUARD
Was this helpful?
Thank you for voting!
  • 1
See how others fixed this model. Time, tools, difficulty, and steps that lead to victory! View More

Search repair tips from other customers using simple keywords like "replace", "fit", "remove", "inspect". DIY doesn't mean you have to do it alone!

Search filter:
Clear Filter
Your search term must have 3 or more characters.
Spindle locked up, causing string head to not rotate.
1 of 8 people found this instruction helpful.
  • HOWARD from LODA, IL
  • Really Easy
  • Less than 15 mins
  • Screw drivers
Removed string head, removed 3 screws, removed bad unit, and replaced with new unit, replaced 3 screws, and replaced string head.
Was this helpful?
Thank you for voting!