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Model # 51974 (310000001 AND UP) Official Toro trimmer
Here are the diagrams and repair parts for Official Toro 51974 (310000001 AND UP) trimmer, as well as links to manuals and error code tables, if available.
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Browse Parts for
51974 (310000001 AND UP) Line Trimmers
#8
Trimmer head/straight shaft/guard diagram
Line trimmer washer
Part #099078001005
The manufacturer no longer makes this part, and there's no substitute part
#29
Powerhead/upper shaft/handle diagram
(ut-04005) eagle (no.67) (name 5-15r, single)
Part #N/P
The manufacturer no longer makes this part, and there's no substitute part
#7
Powerhead/upper shaft/handle diagram
Throttle
Part #690694002
The manufacturer no longer makes this part, and there's no substitute part
#3
Powerhead/upper shaft/handle diagram
Starter label
Part #940686064
The manufacturer no longer makes this part, and there's no substitute part
#36
Muffler/carburetor/fuel tank/housing diagram
Line trimmer housing
Part #300754023
The manufacturer no longer makes this part, and there's no substitute part
#34
Muffler/carburetor/fuel tank/housing diagram
Screw, m6
Part #6635301
The manufacturer no longer makes this part, and there's no substitute part
#5
Powerhead/upper shaft/handle diagram
Support-handle, rear
Part #518122001
The manufacturer no longer makes this part, and there's no substitute part
#23
Powerhead/upper shaft/handle diagram
Line trimmer clamp
Part #518038001
The manufacturer no longer makes this part, and there's no substitute part
#43
Muffler/carburetor/fuel tank/housing diagram
Screw, m4
Part #660349001
The manufacturer no longer makes this part, and there's no substitute part
#8
Powerhead/upper shaft/handle diagram
Trigger
Part #518124001
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
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.
Trying to decide between a straight shaft and curved shaft trimmer? This guide compares both designs to help you underst…
Wondering if your weed whacker can pick up the slack for your broken lawn mower? You're not alone. In this guide, we bre…