LST140C (Type 1) Black and Decker Trimmer - Overview
Sections of the LST140C
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A CHARGER, 36V 400MA, NEW LOGO
PartSelect #: PS18989133
Manufacturer #: 90604879-01
No Longer Available
SA SPOOL AND LINE, 25FT, SINGL
PartSelect #: PS18989378
Manufacturer #: 90626046
No Longer Available
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...
$5.95
Special Order
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
SA GEAR AND SPINDLE, SERV ONLY
PartSelect #: PS18994000
Manufacturer #: N498091
This is a Genuine OEM Sourced replacement part designed for Black and Decker String Trimmer. This item is used to secure and drive the Spool. It is made out of Plastic and Metal. Includes a Plastic Ho...
No Longer Available
Questions And Answers for LST140C
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Common Symptoms of the LST140C
[Viewing 2 of 2]Cutting line does not come out
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Engine revs but trimmer head will not turn
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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
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:
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Mark from CATOOSA, OK
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Difficulty Level:Easy
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Total Repair Time:1- 2 hours
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Tools:Screw drivers
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