Honda Lawnmower wont spark

[Neddy flanders]

Hi
Honda GCV530 twin Cylinder engine.
No spark at either of plugs
was running perfectly yesterday.
everything else fine. good battery, new starter motor. good fuel pump.

if i remove the kill wire from the ignition coils, I get a full spark and can start the mower, which tells me there is something earthing this wire normally and preventing the Coil from creating a spark. fine... ill check everything.
But..
1. can i run mower without this wire connected?? stopping the engine is tricky , as is engaging the belts to drive the deck. bit confusing..

any help appreciated

 

[Lakesdigger]

Hi
Honda GCV530 twin Cylinder engine.
No spark at either of plugs
was running perfectly yesterday.
everything else fine. good battery, new starter motor. good fuel pump.

if i remove the kill wire from the ignition coils, I get a full spark and can start the mower, which tells me there is something earthing this wire normally and preventing the Coil from creating a spark. fine... ill check everything.
But..
1. can i run mower without this wire connected?? stopping the engine is tricky , as is engaging the belts to drive the deck. bit confusing..

any help appreciated

Plenty oil in it?

 

[Neddy flanders]

Yes topped it up. No difference

 

[Bury the Trash]

as you discribe it sounds as if kill /off switch/wiring knackered fit a new /or spurious simple and wire in ?

 

[Pan mixer]

A friend has a Honda scraper for pig poop, it is 25 years old and the kill switch died 15 years ago. He says that you can easily kill the engine with one of the little lever things that are part of the governor.

 

[TripleSix]

Yeah you can run it with the kill wires disconnected.
Pull the choke out to stop it...

Sounds like you have a safety switch issue, what make tractor is it?

 

[Neddy flanders]

It's an ignition key. There is a wire off it( think it's the aux wire) not sure if it was on or off before this happened

 

[Neddy flanders]

Yeah you can run it with the kill wires disconnected.
Pull the choke out to stop it...

Sounds like you have a safety switch issue, what make tractor is it?

Thanks. Any reason why it won't engage the deck with the kill wire removed???

 

[TripleSix]

It's an ignition key. There is a wire off it( think it's the aux wire) not sure if it was on or off before this happened

What machine is the engine fitted to?

 

[TripleSix]

Thanks. Any reason why it won't engage the deck with the kill wire removed???

No, but beware it won't stop when you get off the seat with the blades running, obvs

 

[Lakesdigger]

Thanks. Any reason why it won't engage the deck with the kill wire removed???

Depends how any safety switches are connected (likely into the kill switch circuit) could be that it's a safety switch at fault not the kill switch (I don't know what lawnmower it is but does it have switch in the seat one linked to the bag if fitted etc?

 

[Neddy flanders]

Depends how any safety switches are connected (likely into the kill switch circuit) could be that it's a safety switch at fault not the kill switch (I don't know what lawnmower it is but does it have switch in the seat one linked to the bag if fitted etc?

Yes three safety switches. Tested all of them and seem ok

 

[Bury the Trash]

wiring fault.
get a new one and a this time walk behind to save on the dieting

 

[Alchad]

Not Honda. But had a similar problem with a twin Briggs and Stratton. On those the kill wire includes a diode, these diodes fail and cause this problem. If your kill wire has a diode you can use a multimeter to check it.