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Troybilt
Gas Line Trimmer

Model # TB70SS Official Troybilt trimmer

Here are the diagrams and repair parts for Official Troybilt TB70SS trimmer, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 90 parts  |
Line Trimmer Handle 791-182167
#9

Boom and trimmer diagram

Line trimmer handle

Part #791-182167

$102.80
In Stock
Rope Guide 753-1200
#25

Engine diagram

Rope guide

Part #753-1200

$20.63
In Stock
Gasket 753-04619
#46

Engine diagram

Gasket

Part #753-04619

$4.33
In Stock
Hose 791-683947B
#9

Engine diagram

Hose

Part #791-683947B

Replaced by #791-683974B

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Manufacturer substitution
This part replaces 791-683947B. Substitute parts can look different from the original.
$31.56 | 
16% OFF Phone Price : $37.56
In Stock
Button 791-153066B
#28

Boom and trimmer diagram

Button

Part #791-153066B

The manufacturer no longer makes this part, and there's no substitute part

Screws Nuts 791-180547
#21

Boom and trimmer diagram

Screws nuts

Part #791-180547

The manufacturer no longer makes this part, and there's no substitute part

Screw 791-180351
#3

Engine diagram

Screw

Part #791-180351

The manufacturer no longer makes this part, and there's no substitute part

Adjustment Knob 791-181981
#14

Boom and trimmer diagram

Adjustment knob

Part #791-181981

The manufacturer no longer makes this part, and there's no substitute part

Screw 791-182519
#38

Engine diagram

Screw

Part #791-182519

The manufacturer no longer makes this part, and there's no substitute part

S/b,cltch 753-04812

#NI02

All parts diagram

S/b,cltch

Part #753-04812

The manufacturer no longer makes this part, and there's no substitute part

Symptoms for gas line trimmers

Choose a symptom to see related grass line trimmer repairs.

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Why does my gas line trimmer run rough?

Main causes: stale fuel, clogged fuel filter, faulty spark plug, clogged air filter, cracked fuel lines, clogged carbure…

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Why won't my gas line trimmer start?

Main causes: stale fuel, cracked fuel lines, dirty carburetor, bad spark plug, worn piston rings…

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Why does my gas line trimmer leak gas?

Main causes: cracked fuel lines, bad carburetor seals, leaky fuel tank cap, damaged fuel tank…

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Repair guides for gas line trimmers

These step-by-step repair guides will help you safely fix what’s broken on your grass line trimmer.

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How to rebuild a line trimmer carburetor

How to rebuild a line trimmer carburetor

If the line trimmer engine won't start even though there's fuel in the tank, the carburetor could be the problem. Follow…

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Repair difficulty
Time required
 15 minutes or less
How to replace a line trimmer carburetor

How to replace a line trimmer carburetor

If the line trimmer won't start even though there's fuel in the tank, the carburetor could be the problem. Follow these …

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a line trimmer fuel line

How to replace a line trimmer fuel line

The fuel line on a grass line trimmer deteriorates with time and eventually can split or crack. You can replace it yours…

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Repair difficulty
Time required
 15 minutes or less

Articles and videos for gas line trimmers

Use the advice and tips in these articles and videos to get the most out of your grass line trimmer.

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Solving 3 common problems with line trimmer cutting lines

Solving 3 common problems with line trimmer cutting lines

Follow these tips to prevent the cutting line on your grass line trimmer from breaking or feeding out too much or too li…

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How to replace a line trimmer fuel line video

How to replace a line trimmer fuel line video

Follow the steps in this video to replace a leaking fuel line in a line trimmer.…

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