Makita
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.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

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

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 131 parts  |

Filter 523-65039-00

#87

All parts diagram

Filter

Part #523-65039-00

In Stock
Blade Sliding Screw (l=19) (4) 040-00200-9A

#19

All parts diagram

Blade sliding screw (l=19) (4)

Part #040-00200-9A

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

Set Screw 519-50020-60

#75

All parts diagram

Set screw

Part #519-50020-60

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

Wire Complete 525-70180-01

#102

All parts diagram

Wire complete

Part #525-70180-01

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

Screw Assembly M5 X 60 (2) 004-33056-00

#137

All parts diagram

Screw assembly m5 x 60 (2)

Part #004-33056-00

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

Hex. Bolt M6x15 (2) 054-06015-0K

#3

All parts diagram

Hex. bolt m6x15 (2)

Part #054-06015-0K

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

Coil 519-70030-21

#97

All parts diagram

Coil

Part #519-70030-21

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

Metering Diaphragm Gasket 523-60460-40

#123

All parts diagram

Metering diaphragm gasket

Part #523-60460-40

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

Rearhandle Complete (incl. Fig. 31-39, 40a) 287-00300-1A

#30

All parts diagram

Rearhandle complete (incl. fig. 31-39, 40a)

Part #287-00300-1A

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

Pump Diaphragm 524-60010-40

#124

All parts diagram

Pump diaphragm

Part #524-60010-40

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, clogged fuel filter, faulty spark plug, clogged air filter, cracked fuel lines, clogged carbure…

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

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

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.

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.…

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…

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.…