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Ryobi
Gas Line Trimmer

Model # 770R Official Ryobi trimmer

Here are the diagrams and repair parts for Official Ryobi 770R 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 86 parts  |
Handle 610300
#33

Engine diagram

Handle

Part #610300

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

Mount Pad 145308
#23

Engine diagram

Mount pad

Part #145308

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

Spool Line 153577

#NI02

All parts diagram

Spool line

Part #153577

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

Pwer Shaft 180022
#12

Engine diagram

Pwer shaft

Part #180022

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

Filter 180350
#2

Engine diagram

Filter

Part #180350

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

Gearbox 180549
#21

Trimmer diagram

Gearbox

Part #180549

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

Repair Kit 153308

#NI05

All parts diagram

Repair kit

Part #153308

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

Lower Drive Shaft Housing 180690
#14

Trimmer diagram

Lower drive shaft housing

Part #180690

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

Housing 180021
#3

Trimmer diagram

Housing

Part #180021

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

Spacer 145918
#27

Engine diagram

Spacer

Part #145918

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 ...

Read more
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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