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Model # HBC-40 Official Homelite trimmer
Here are the diagrams and repair parts for Official Homelite HBC-40 trimmer, as well as links to manuals and error code tables, if available.
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HBC-40 Line Trimmers
#38
Replacement parts diagram
Key
Part #75078
The manufacturer no longer makes this part, and there's no substitute part
#1
Carburetor- zama diagram
Repair kit
Part #03172
The manufacturer no longer makes this part, and there's no substitute part
#27
Replacement parts diagram
Screw
Part #80891
The manufacturer no longer makes this part, and there's no substitute part
#31
Shaft and cutting head diagram
Machine screw
Part #04003
The manufacturer no longer makes this part, and there's no substitute part
#15
Replacement parts diagram
Washer
Part #84003
The manufacturer no longer makes this part, and there's no substitute part
#11
Replacement parts diagram
Washer
Part #83102
The manufacturer no longer makes this part, and there's no substitute part
#26
Shaft and cutting head diagram
Retainer nut
Part #04144
The manufacturer no longer makes this part, and there's no substitute part
#40
Replacement parts diagram
Fuel tank
Part #A-03559
The manufacturer no longer makes this part, and there's no substitute part
#2
Shaft and cutting head diagram
Cable tie
Part #JA-99163-6
The manufacturer no longer makes this part, and there's no substitute part
#53
Shaft and cutting head diagram
Thrttl & swc
Part #A-00593
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
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.

Learn about the top 10 must-have electric lawn & garden tools for 2023…

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

Find out how to take care of your grass line trimmer from the start of the trimming season until the end, with this help…