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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  |
Spring 610314
#2

Trimmer diagram

Spring

Part #610314

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

Spark Plug 610311
#44

Engine diagram

Spark plug

Part #610311

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

Retainer 153644
#30

Engine diagram

Retainer

Part #153644

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

Lead Wire 180036
#42

Engine diagram

Lead wire

Part #180036

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

Cable 180127
#4

Trimmer diagram

Cable

Part #180127

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

Gasket 145564
#50

Engine diagram

Gasket

Part #145564

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

Flywheel 153624
#26

Engine diagram

Flywheel

Part #153624

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

Screw 147544

#NI10

All parts diagram

Screw

Part #147544

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

Block Assembly 180027

#NI08

All parts diagram

Block assembly

Part #180027

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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