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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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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 86 parts  |
Guard 180548
#18

Trimmer diagram

Guard

Part #180548

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

Ring 180530

#NI07

All parts diagram

Ring

Part #180530

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

Screw 147544

#NI10

All parts diagram

Screw

Part #147544

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

Spool 153619
#22

Trimmer diagram

Spool

Part #153619

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

Bolt 147575
#47

Engine diagram

Bolt

Part #147575

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

Seal 610309
#16

Engine diagram

Seal

Part #610309

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

Repair Kit 153309

#NI06

All parts diagram

Repair kit

Part #153309

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

Inner Reel 153600
#26

Trimmer diagram

Inner reel

Part #153600

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

Symptoms for gas line trimmers

Choose a symptom to see related grass line trimmer repairs.

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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 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 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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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…

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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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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…

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