Model # RBC321 Official Makita string trimmer

Here are the diagrams and repair parts for Official Makita RBC321 string 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 129 parts |

#404

String trimmer diagram

Hex wrench

Part #783202-0

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

#94

String trimmer diagram

Wire

Part #616-55002-00

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

#56

String trimmer diagram

Exhaust muffler

Part #531-30090-01

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

#129

String trimmer diagram

Tapping screw m4x8

Part #015-00499-80

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

#27

String trimmer diagram

Ball bearing #6200ddu

Part #060-01099-70

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

#98

String trimmer diagram

Pipe bracket 1

Part #627-15003-01

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

#131

String trimmer diagram

Hose clamp

Part #085-11699-70

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

#120

String trimmer diagram

Screw cable adj.

Part #531-60200-20

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

#123

String trimmer diagram

Air case cleaner

Part #531-35032-00

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

#12

String trimmer diagram

Handle (loop type)

Part #621-45000-01

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…

Why won't my gas line trimmer start?

Main causes: stale fuel, cracked fuel lines, dirty carburetor, bad spark plug, worn piston rings…

Why does my gas line trimmer leak gas?

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.

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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

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

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.

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Solving 3 common problems with line trimmer cutting lines

Model # RBC321 Official Makita string trimmer

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Symptoms for gas line trimmers

Why does my gas line trimmer run rough?

Why won't my gas line trimmer start?

Why does my gas line trimmer leak gas?

Repair guides for gas line trimmers

How to rebuild a line trimmer carburetor

How to replace a line trimmer carburetor

How to replace a line trimmer fuel line

Articles and videos for gas line trimmers

Solving 3 common problems with line trimmer cutting lines

How to replace a line trimmer fuel line video

How to tune up a grass line trimmer video

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