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Ryobi
Gas Line Trimmer

Model # 720R-1 Official Ryobi trimmer

Here are the diagrams and repair parts for Official Ryobi 720R-1 trimmer, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 102 parts  |
Return Line 147290
#20

Engine diagram

Return line

Part #147290

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

Fuel Tank 147580
#22

Engine diagram

Fuel tank

Part #147580

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

Blade Assembly 682061
#20

Boom & trimmer diagram

Blade assembly

Part #682061

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

Adjustment 682048
#5

Engine diagram

Adjustment

Part #682048

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

Eyelet 145566
#23

Boom & trimmer diagram

Eyelet

Part #145566

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

Flywheel Key 610676

#NI

All parts diagram

Flywheel key

Part #610676

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

Housing 180017
#1

Boom & trimmer diagram

Housing

Part #180017

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

Muffler Assembly 180119
#47

Engine diagram

Muffler assembly

Part #180119

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

Screw 683606
#9

Boom & trimmer diagram

Screw

Part #683606

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

Spark Plug 610311
Spark plug

Part #610311

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 …

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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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