MTD
Gas Line Trimmer

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

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


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Showing 10 of 120 parts

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Lawn & Garden Equipment Hex Flange Nut

#19

Trimmer - series 550 Diagram

Lawn & garden equipment hex flange nut

Part #712-0417A
This item is not returnable
$4.57

In Stock

Lawn & Garden Equipment Lock Nut, 5/16-18

#10

Trimmer - series 260 Diagram

Lawn & garden equipment lock nut, 5/16-18

Part #712-04063
This item is not returnable
$3.36

In Stock

Lawn Tractor Flange Nut

#41

Trimmer - series 260 Diagram

Lawn tractor flange nut

Part #712-04065
This item is not returnable
$2.82 | 
6% OFF MSRP:$3.00

In Stock

Lawn Mower Ground Drive Belt, 3/8 x 36-1/8-in

#55

Trimmer - series 550 Diagram

$18.59

In Stock

Lawn & Garden Equipment Nut

#11

Trimmer - series 260 Diagram

Lawn & garden equipment nut

Part #712-04064
This item is not returnable
$3.32

In Stock

Lawn Mower Handle Knob

#24

Trimmer - series 550 Diagram

Lawn mower handle knob

Part #720-04072A
This item is not returnable
$5.45 | 
19% OFF MSRP:$6.70

In Stock

Lawn & Garden Equipment Flange Nut

#66

Trimmer - series 550 Diagram

Lawn & garden equipment flange nut

Part #712-04217
This item is not returnable
$3.59

In Stock

Lawn & Garden Equipment Shoulder Screw

#43

Trimmer - series 260 Diagram

Lawn & garden equipment shoulder screw

Part #738-04419A
This item is not returnable
$2.67 | 
17% OFF MSRP:$3.20

In Stock

Lawn & Garden Equipment Wing Nut

#42

Trimmer - series 260 Diagram

Lawn & garden equipment wing nut

Part #720-04122
This item is not returnable
$4.44

In Stock

Edger Blade Adjuster Rod

#47

Trimmer - series 550 Diagram

Edger blade adjuster rod

Part #747-04110A
$13.13

In Stock

Showing 10 of 120 parts

Symptoms for gas line trimmers

Choose a symptom to see related grass line trimmer repairs.

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

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.

October 1, 2013
By Lyle Weischwill
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 yourself, following these instructions.

Repair difficulty
Time required
 30 minutes or less
October 1, 2013
By Lyle Weischwill
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 these instructions to do the job in under 30 minutes.

Repair difficulty
Time required
 30 minutes or less
October 1, 2013
By Lyle Weischwill
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 instructions to replace the carburetor in under 30 minutes.

Repair difficulty
Time required
 30 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.

June 1, 2016

Tips for a hard-to-start grass line trimmer

By Sears PartsDirect staff

These tips may help you get your hard-to-start gas line trimmer running.

June 1, 2015

How to replace a line trimmer fuel line video

By Sears PartsDirect staff

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

March 1, 2015

Easy DIY grass line trimmer repairs

By Sears PartsDirect staff

Learn about some very easy do-it-yourself repairs for a grass line trimmer.