Part Location Diagram of 31740-Z0A-003 Honda Diode Assembly- Engine Stop
See part S-8 in the diagram
( Grid squares measure 1x1 inch )

Diode Assembly- Engine Stop 31740-Z0A-003

Manufactured by:
Honda
ERP Number:
ERP9941419
Part Number:
31740-Z0A-003
Original Equipment Manufacturer ?
  Works with your model  GCV520U!
$31.95
Special Order

A Bit Difficult 

1- 2 hours 

(2 rated repairs) ?
  Works with your model   GCV520U!

Troubleshooting

This part works with the following brands:
  • Honda
  • Toro
This part works with the following products:
  • Engine

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Customer Repair Instructions

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A Bit Difficult 

1- 2 hours 

(2 rated repairs) ?
  • 1
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Sorry, we couldn't find any existing installation instruction that matched.

Would not start

Harold from Cumberland, Virginia

3 of 3 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
30 - 60 mins
Tools:
Nutdriver, Socket set, Wrench set
Removed engine top cover. Removed coils and diode.Replaced coils and spiced in diode.Used .010 thickness guage to set air gap between coil and flywheel. A business card or cardboard of similar thickness will work. Replaced top cover and tested.
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Lawn mower would not start. No spark noted during diagnosis.

William from Macon, Georgia

3 of 4 people found this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Screw drivers, Socket set, Wrench set
Removed the engine shroud on top of the engine. Ignitions and diode immediately underneath with. 5 bolts loosened freeing the ignitions and diode. Ereplacenent makes it very easy to order parts at reasonable prices.
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  • 1

Model Cross Reference

This part works with the following models:
ERP Number: ERP9941419
Manufacturer Part Number: 31740-Z0A-003
Brand Model Number Description
Toro 74425 Lawn Tractor - Lawn Tractor
Toro 74434 Lawn Tractor - Lawn Tractor
Honda GCV520U Engine - Small Engine
Honda GCV530 Engine - Small Engine
Honda GCV530R Engine - Small Engine
Honda GCV530U Engine - Small Engine
Honda GXV520U Engine - Small Engine
Honda GXV530 Engine - Small Engine
Honda GXV530R Engine - Small Engine
Honda GXV530U Engine - Small Engine