Gas Line Trimmer

Model # EH450 Official Makita hedge trimmer

Here are the diagrams and repair parts for Official Makita EH450 hedge trimmer, as well as links to manuals and error code tables, if available.

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Browse Parts for
EH450 Line Trimmers
Filter 523-65039-00

#87

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Filter

Part #523-65039-00

In Stock
O-ring 524-60010-10

#127

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O-ring

Part #524-60010-10

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

Gear Crank Assembly 286-10300-4A

#14

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Gear crank assembly

Part #286-10300-4A

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

Spacer 550-35030-01

#80

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Spacer

Part #550-35030-01

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

Collar 519-50021-10

#72

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Collar

Part #519-50021-10

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

Hex U-nut M5 (2) 164-06000-0K

#8

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Hex u-nut m5 (2)

Part #164-06000-0K

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

Screw 014-00594-90

#78

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Screw

Part #014-00594-90

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

Retaining Ring Stw-26 283-02600-0K

#42

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Retaining ring stw-26

Part #283-02600-0K

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

Grommet 525-75003-00

#79

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Grommet

Part #525-75003-00

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

Slide Switch 005-08800-4A

#39

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Slide switch

Part #005-08800-4A

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.

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

Main causes: stale fuel, clogged fuel filter, faulty spark plug, clogged air filter, cracked fuel lines, clogged carbure…

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.

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…

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 …

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…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your line trimmers

Use the advice and tips in these articles and videos to get the most out of your grass line trimmer.

Straight shaft vs curved shaft trimmers: What’s the difference?

Straight shaft vs curved shaft trimmers: What’s the difference?

Trying to decide between a straight shaft and curved shaft trimmer? This guide compares both designs to help you underst…

Can you cut grass with a weed whacker?

Can you cut grass with a weed whacker?

Wondering if your weed whacker can pick up the slack for your broken lawn mower? You're not alone. In this guide, we bre…