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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Browse Parts for
720R-1 Line Trimmers
Pwer Shaft 180022
#12

Engine diagram

Pwer shaft

Part #180022

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

Retainer Ring 145570
#14

Boom & trimmer diagram

Retainer ring

Part #145570

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

Clamp Assembly 153597
Clamp assembly

Part #153597

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

Coulping 683605
#8

Boom & trimmer diagram

Coulping

Part #683605

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

Strap 682075

#NI

All parts diagram

Strap

Part #682075

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

Crankcase 147015
#14

Engine diagram

Crankcase

Part #147015

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

Cover 180098
#40

Engine diagram

Cover

Part #180098

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

Blower, See Model Tb720r Ryobi N/P

#NI

All parts diagram

Blower, see model tb720r ryobi

Part #N/P

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

Shaft 153313
#21

Boom & trimmer diagram

Shaft

Part #153313

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

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

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.

Top 10 electric lawn and garden tools for 2023

Top 10 electric lawn and garden tools for 2023

Learn about the top 10 must-have electric lawn & garden tools for 2023…

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.…

Grass line trimmer maintenance checklist

Grass line trimmer maintenance checklist

Find out how to take care of your grass line trimmer from the start of the trimming season until the end, with this help…