Gas Line Trimmer

Model # 25A-26J7783 Official MTD high wheel line trimmer

Here are the diagrams and repair parts for Official MTD 25A-26J7783 high wheel line trimmer, as well as links to manuals and error code tables, if available.

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25A-26J7783 Line Trimmers
Lawn & Garden Equipment Hex Flange Nut (replaces 753-05549, 912-0417a) 712-0417A
#19

Trimmer - series 550 diagram

Lawn & garden equipment hex flange nut (replaces 753-05549, 912-0417a)

Part #712-0417A

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$8.49
11% OFF Phone Price : $9.49
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Yard Machines Lawn & Garden Equipment Lock Nut, 5/16-18 (replaces 753-05591) 712-04063
Yard machines lawn & garden equipment lock nut, 5/16-18 (replaces 753-05591)

Part #712-04063

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This item is not returnable
$4.40
19% OFF Phone Price : $5.40
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Yard Machines Lawn & Garden Equipment Nut 712-04064
#11

Trimmer - series 260 diagram

Yard machines lawn & garden equipment nut

Part #712-04064

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This item is not returnable
$4.49
18% OFF Phone Price : $5.49
In Stock
Yard Machines Lawn Tractor Flange Nut (replaces 00012173, Wd-129-103) 712-04065
Yard machines lawn tractor flange nut (replaces 00012173, wd-129-103)

Part #712-04065

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$5.27
16% OFF Phone Price : $6.27
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Lawn Mower Ground Drive Belt, 3/8 X 36-1/8-in (replaces 754-04032b, 954-04032, 954-0465) 954-04032B
#55

Trimmer - series 550 diagram

Lawn mower ground drive belt, 3/8 x 36-1/8-in (replaces 754-04032b, 954-04032, 954-0465)

Part #954-04032B

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$28.69
17% OFF Phone Price : $34.69
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Lawn & Garden Equipment Flange Nut 712-04217
#66

Trimmer - series 550 diagram

Lawn & garden equipment flange nut

Part #712-04217

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$6.58
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Yard Machines Lawn Mower Handle Knob (replaces 01000382, 113589, 720-04072, 720-04125) 720-04072A
#24

Trimmer - series 550 diagram

Yard machines lawn mower handle knob (replaces 01000382, 113589, 720-04072, 720-04125)

Part #720-04072A

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$9.33
10% OFF Phone Price : $10.33
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Edger Blade Adjuster Rod (replaces 747-04110) 747-04110A
#47

Trimmer - series 550 diagram

Edger blade adjuster rod (replaces 747-04110)

Part #747-04110A

This item is not returnable
$22.41
21% OFF Phone Price : $28.41
In Stock
Yard Machines Lawn & Garden Equipment Wing Nut (replaces 01002925, 920-0279) 720-0279
Yard machines lawn & garden equipment wing nut (replaces 01002925, 920-0279)

Part #720-0279

This item is not returnable
$6.87
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Yard Machines Lawn & Garden Equipment Guide Bolt 710-1205
Yard machines lawn & garden equipment guide bolt

Part #710-1205

This item is not returnable
$5.01
17% OFF Phone Price : $6.01
In Stock

Symptoms for gas line trimmers

Choose a symptom to see related grass line trimmer repairs.

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

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

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

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.

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…

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 …

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…

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.

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.…

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…

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.…