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Ryobi
Gas Line Trimmer

Model # 704R Official Ryobi gas trimmer

Here are the diagrams and repair parts for Official Ryobi 704R gas 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 79 parts  |
Cylinder Assembly (includes 49) 791-181622
#47

Engine diagram

Cylinder assembly (includes 49)

Part #791-181622

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

Line Trimmer Air Cleaner Filter 791-190350
#2

Engine diagram

Line trimmer air cleaner filter

Part #791-190350

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

Mount Pad 791-612134
#16

Engine diagram

Mount pad

Part #791-612134

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

Lawn & Garden Equipment Engine Carburetor Mounting Bracket 753-1196
#12

Engine diagram

Lawn & garden equipment engine carburetor mounting bracket

Part #753-1196

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

Kit 791-180602

#NI02

All parts diagram

Kit

Part #791-180602

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

Muffler 791-182059
#1

Engine diagram

Muffler

Part #791-182059

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

Housing 791-153312
#12

Boom and trimmer diagram

Housing

Part #791-153312

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

Cover Assembly 791-182797
#36

Engine diagram

Cover assembly

Part #791-182797

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

Cylinder Assembly 753-04323
#26

Engine diagram

Cylinder assembly

Part #753-04323

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

Inner Reel 791-182844
#20

Boom and trimmer diagram

Inner reel

Part #791-182844

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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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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How to tune up a grass line trimmer video

How to tune up a grass line trimmer video

Tune of your grass line trimmer, following the steps in this video.…

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