my old 3810 needs a new coil. the honda part 30500-890-952 is no longer availble thru honda. Has anyone used another brand coil to replace this one. even a Briggs or anything?
my old 3810 needs a new coil. the honda part 30500-890-952 is no longer availble thru honda. Has anyone used another brand coil to replace this one. even a Briggs or anything?
My parts list shows two coils for the 3810, and which one depends on your serial number:
For frame serial numbers <=1414934, the coil is part # 30500-890-591 ($79.62)
For frame serial numbers >=1414935, yes, that is the right number and it has been discontinued.
Nothing I can see in the catalog that describes the difference. I checked the shop manuals and they show the same drawing. Obviously, there must be some kind of differences, but what?
The one engineer I know here who might recall is on vacation, but I'll see what he can contribute when back in the office on Monday.
However, its not the frame serial number that you need, its the engine serial number. From what I have learned the HT3810/K2 requires the 30500-890-952 and that coil is a replacement for the 30500-890-951.
It appears that you can't get either of the two. I couldn't even find a used one on ebay. You would think there would be a replacement for them but I can't find mention of one anywhere.
Thanks for the Boats.net lead for the coil replacement. However, I found that site more than a week ago and ordered the part. Three days later a got an email from them saying that they couldn't get the part and they canceled the order.
Best Regards,
Tom
#7
EngineMan
Sorry about that, make's you think why site's like that can't take them off the sale list.
has it got a Honda G400 engine..?
Hi, I checked the engine block and it is a G400. I can't find the serial number however.
I looked up G400 ignition coils and they sell sets of ignition coil, condenser, and breaker points. But none of the HT3810 parts sources that I have looked at mention a condenser or breaker points for the HT3810. It doesn't give me a warm and fuzzy that I have located the right part.
I looked at the page you sent me, and I found it earlier today as well. Unfortunately, the item that would be the ignition coil indicates two options: L1 which is discontinued, and L2 which isn't shown (or priced) in the parts ordering listing below the diagram.
I think that pursuing the G400 option is the best bet. I'm going to remove the engine cowling, take a close look at the coil (and surrounding stuff) and go from there.
I don't know about other 3810 mowers but mine does not have a condeser. I do not hink it has points either. not positive as have not removed the flywheel.
Well, I finally got around to pulling out the ignition coil from the engine. In order to get at the ignition coil, you have to remove the engine. In order to remove the engine you have to dismantle a lot of the chassis and remove the drive shaft.
Now that I have the ignition coil out and sitting in front of me, there are no points, there is no condenser. It is an ignition coil period. There are undoubtedly electronics inside the casing of the ignition coil.
In doing a search for the part, I cannot find a replacement. To date, the places that show that they have the part don't have the part when I call them and they tell me that they can't reorder it. Why do they still then show the part and availability for it on their sites; sloppiness is all I can guess. I can imagine that I was not the only person to contact them for that part.
Anyway, if you are looking for a replacement to the ignition coil for this tractor then you're out of luck until someone can find a source for a replacement. I can't find the replacement and I have put a fair number of hours into looking for a replacement.
Wish I had better news to report,
Tom
#15
EngineMan
Is there a way that you could take a photo of it and post it up here, there's got to be a coil out there that would fit it.
Hi - I think that ignition coil you pictured, although very similar, is for a smaller engine and is very likely to have a smaller flywheel. The ignition wire is considerably shorter indicating that it is for a smaller engine.
And if it is for a smaller engine, I see another problem. The armature of the ignition coil has to be situated fairly close to the surface of the magnets on the flywheel. If the ignition coil is designed for a significantly smaller flywheel (of a smaller engine) then the outside edges of the armature can be situated close to the surface of the flywheel magnets but the inside edges will not be as close. And finally, the spacing for the mounting holes are rather critical. I have not seen dimensions provided for any of the ignition coils out there.
There may be a equivalent ignition coil out there but I haven't seen one close enough to take a chance on getting it.
Unfortunately, I have not found a replacement for this ignition coil. However, I have found a simple test to determine if your ignition coil is bad. One of the two wires has a snap connector end, the other of the two wires goes to the spark plug. The wire with the snap connector end connects to the ignition switch. The ignition switch also relays the switch states of 1) the clutch being in neutral, 2) the mower deck not being engaged, 3) the ignition switch in the on position and 4) the driver being seated. If you disconnect that wire from the ignition switch then all those safety mechanisms are disabled; that is, you can start the motor but you can't turn it off with the ignition switch. In order to turn it off, you have to connect the wire from the ignition coil to the ignition switch.
This test will help you determine if the problem is in the ignition switch or the ignition coil. One last bit of bad news though - the ignition switch is no longer available either. But if the problem is the ignition switch you can operate the mower (albeit unsafely) until you figure out how to fix the ignition switch.
Found used coil on ebay, posted link below. I did not search entire site for new coil, something you might want to do. Also check out freedomcyclenh.com lighting coils. Hope this helps, Mark
Found used coil on ebay, posted link below. I did not search entire site for new coil, something you might want to do. Also check out freedomcyclenh.com lighting coils. Hope this helps, Mark
In stock, $79.63 plus $12.95 shipping. Contacted them yesterday, received email back saying part was available. They have a huge parts inventory, new and used parts, as well as five acres of older lawnmowers and tractors, they ship worldwide.
Honda stopped making ride on lawn mower engines a long time ago because they would not degrade their brand name by making the garbage engines that the mower companies would pay for.
A little latter they exited the ride on tractor market all together as the market wanted junk and not quality mowers.
Thus your part is now obsolete.
Honda continued to sell into Europe where the population can recognise good quality and were willing to pay a reasonable amount for it.
Volume wise a lot more were sold in the USA so you have a better chance of finding a good ? used one there, or perhaps even a NOS item sitting on a shelf.
I have had very little success finding G 400 electrical parts.
Honda have an excellent customer service division so if there is a work around they will usually help you.
And th USa version had a different ignition system to the European version, ( we got them both down here )
If the tractor is in good condition , and it is very hard work to destroy one you might consider fitting a different engine.
Thank your bertsmobile 1 for your fast reaction.
As a matter of fact my lawn tractor is in very good condition and it would be a pity to destroy it an put it to the thrash.
It is a little bit strange that this thread about replacement of the ignition coil for an HT3810 is not active since 2013.
Does it meant that I am the one and only owner of an HT3810 which is still operational ?
On the other hand, you can find a lots of other spareparts for this model on the net : dealers, eBay, amazon...
I hope that someone had to face a similar problem since 2013 and can give me some precious information.
Perhaps an information on the way to repair the broken coil...
or perhaps the address for "Alibaba's Cave" where I can get this d...ed coil.
I repair mowers and there are 6 Hondas in run.
The only thing I ever replace are belts, blades , filters and the occasional bearing, they just never stop
If everything is working well replace the entire engine.
Just remember to measure the shaft diameter as if yours was a Euro engine the shaft will most likely me 20 or 25 mm where as most USA engines shafts will be 3/4" or 1"
