LST140C (Type 1) Black and Decker Trimmer - Overview

Sections of the LST140C

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Keep searches simple, eg. "belt" or "pump".
SA MOTOR HOUSING – Part Number: 90636582
SA MOTOR HOUSING
PartSelect #: PS18989526
Manufacturer #: 90636582
  No Longer Available
SA LEAD WIRE – Part Number: 90636584
SA LEAD WIRE
PartSelect #: PS18989527
Manufacturer #: 90636584
  No Longer Available
Clamp,Cord – Part Number: 329301-00
Clamp,Cord
PartSelect #: PS10169548
Manufacturer #: 329301-00
$7.44
  Special Order
SA MOTOR AND MOTOR PLATE, SERV – Part Number: N498090
SA MOTOR AND MOTOR PLATE, SERV
PartSelect #: PS18993999
Manufacturer #: N498090
If your trimmer isn’t running like it used to, this motor and mount assembly might be just what you need. It comes with both the motor and the plate it’s mounted on, making it easy to replace the old ...
  No Longer Available
Spring, Trigger – Part Number: 244053-00
Spring, Trigger
PartSelect #: PS10167404
Manufacturer #: 244053-00
$7.44
  Special Order
Screw – Part Number: 330019-03
Screw
PartSelect #: PS10169693
Manufacturer #: 330019-03
This replacement screw is an authentic OEM sourced item, not an aftermarket equivalent. This is screw is used in a lot of different applications depending on your tool. Please check appropriate diagra...
$7.44
  Special Order
SCREW – Part Number: 373158
SCREW
PartSelect #: PS18981290
Manufacturer #: 373158
  No Longer Available
COVER SPOOL – Part Number: 385022-03N
COVER SPOOL
PartSelect #: PS18981315
Manufacturer #: 385022-03N
This genuine OEM replacement spool cover is specifically designed for use with Craftsman trimmers and edgers. Its primary function is to secure the spool and cutting line within the cutter head assemb...
  No Longer Available
BUTTON, HANDLE – Part Number: 90556608
BUTTON, HANDLE
PartSelect #: PS18988352
Manufacturer #: 90556608
  No Longer Available
SPRING, BALE HANDLE BUTTON – Part Number: 90559866
SPRING, BALE HANDLE BUTTON
PartSelect #: PS18988378
Manufacturer #: 90559866
This is a genuine Black and Decker replacement part that has been sourced from the original manufacturer to be used with trimmers. The metal spring is part of the cutting head assembly. The spring is ...
  No Longer Available
SPRING COMPRESSION – Part Number: 90559867
SPRING COMPRESSION
PartSelect #: PS18988379
Manufacturer #: 90559867
  No Longer Available
SPRING, SPOOL COVER – Part Number: 90566944
SPRING, SPOOL COVER
PartSelect #: PS18988535
Manufacturer #: 90566944
Genuine Black and Decker replacement part, this item is sold individually. The purpose of the 90566944 Spring is to hold the spool in place on the Trimmer shown below. It is placed between the spool a...
  No Longer Available

Questions And Answers for LST140C

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Common Symptoms of the LST140C

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Cutting line does not come out
Fixed by
these parts
Fixing
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Engine revs but trimmer head will not turn
Fixed by
these parts
Fixing
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Keep searches simple. Use keywords, e.g. "leaking", "pump", "broken" or "fit".
Bearings on motor armature were shot ... driver gear not turning driven gear.
Took off line guard and guide. Remove 1 Phillips screw.
Opened motor head. Remove 7 torx screws
Opened split housing using a small straight slot screw driver.
Removed gear from housing and pulled it out the bearing housing.

Opened split housing on trigger end. 8 torn screws.
Opened split case with flat screw driver.
Removed motor connections in trigger end for motor.

Pulled motor cable and motor from extention tube.

Please note tube orientation for easy reassemble.

Install new cable/motor on trigger end. Reinstall housing on trigger end.

Install new motor and gear head into new housing. Be sure to install old electrical brace stop to protect new cable.

Roll gear head to verify easy non-binding rotation.

Install top of split case for motor/head end.

Reinstall line guard and line guide.

Test with battery to proof the assembly
Parts Used:
SA GEAR AND SPINDLE, SERV ONLY SA MOTOR AND MOTOR PLATE, SERV SA MOTOR HOUSING
  • Mark from CATOOSA, OK
  • Difficulty Level:
    Easy
  • Total Repair Time:
    1- 2 hours
  • Tools:
    Screw drivers
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