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Honda, Yamaha, Kawasaki, Isuszu Generators

Honda ES3500 Generator


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  #1  
Old 10-26-2017, 03:19:19 PM
americancopier americancopier is offline
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Photo Honda ES3500 Generator

Just bought a Honda ES3500 at an estate sale this weekend.Got it cheap but is missing the carburetor and related hardware.I did manage to get it running after cleaning the points and using a gas soaked rag as a carb.I was hoping someone might have a scrap engine they could sell me that has the parts I need,I think it is a Honda G80.The generator appears to have little use and would love restoring it.
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  #2  
Old 10-26-2017, 04:18:50 PM
robertathonda robertathonda is offline
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Default Re: Honda ES3500 Generator

Quote:
Originally Posted by americancopier View Post
Just bought a Honda ES3500 at an estate sale this weekend.Got it cheap but is missing the carburetor
I can verify the carb has been long gone / discontinued from Honda. Might try eBay for an NOS one, or maybe a clone?

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Caveat: I work for Honda, but the preceding is my opinion alone.
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  #3  
Old 10-27-2017, 08:50:31 PM
Newoldstock Newoldstock is offline
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Default Re: Honda ES3500 Generator

I was at tractor supply recently and saw what looked like a G100 on a brand new minibike.
I am 99% sure this engine is still being made as a clone in China.
https://www.tractorsupply.com/tsc/pr...bike-105cc-ohv

This car direct from China might work.
https://www.aliexpress.com/store/pro...12f124325fMWhd
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  #4  
Old 10-27-2017, 09:50:30 PM
americancopier americancopier is offline
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Default Re: Honda ES3500 Generator

Thanks,that does look like a close fit.My engine needs the throttle actuator on the side for the governor to work unfortunately.Not sure but I think it is a g80 engine on the generator.The engine has the exhaust on the front side and most newer ones have it on the rear.Hope that could narrow down what engine is on it.

Hard to believe Honda discontinued parts for this already.Dont think it’s more than 40 years old!
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  #5  
Old 10-28-2017, 07:16:55 PM
Newoldstock Newoldstock is offline
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Default Re: Honda ES3500 Generator

Those G motors are very old.
They were designed in the 60s as a direct response to Honda trying to get into the US market and seeing how companies like Clinton were crushed by B&S or Tecumseh.

The Honda solution was to build a really good engine on par with the best in the industry but from aluminum ( not iron so they were light like the other brands ).
The success of these aluminum engines with ball bearings and iron liners forced B&S for example to match them in quality ( the IC series ) and try to beat them on price ( volume ).

The follow up to this story is the GX series from Honda.
All eggs in one basket and so forth it had to be significantly better than the G series to command a premium price in the market....
The great irony is the Chinese did something Honda and Briggs could not do.
Build a GX engine at cheaper than low end consumer grade Briggs prices.

Your not surprised your local autoparts store does not provide EOM parts for your 72 Polara, but you do expect Honda to support products almost as old.
There again are those Chinese that clone everything.
I am sure if you search hard enough not only will Aliexpress find you parts, but complete clones of G motors and other brands.

This is not a unique to China situation by the way.
This is not a restored Villiers, its a clone made in India.


---------- Post added at 07:16:55 PM ---------- Previous post was at 07:13:01 PM ----------

I thought I should add a photo of a Mk25 for the purists....
I love these engines sadly they are so rare over here.


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  #6  
Old 10-28-2017, 07:43:02 PM
americancopier americancopier is offline
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Default Re: Honda ES3500 Generator

Thanks for the Honda history! This makes it all the more worth restoring this old but like new generator.I don’t expect Honda to support their products for ever but hoping for at least an after market supplier.The carb does appear to be too unique to easily match up.I know someone has a g Honda engine for parts,just a matter of time.
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  #7  
Old 10-29-2017, 07:15:29 PM
Newoldstock Newoldstock is offline
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Default Re: Honda ES3500 Generator

Anything you can make fit off another 4 stroke of about the same displacement and performance will work.
Easier if you can turn some screws to adjust it..

You would be surprised what you can graft together to make work.
I was in Cuba on holiday and saw all kinds of old American cars that are running because the mechanics are very good at adapting parts to keep things running.

Here's an interesting video of a clone GX200 ( 196cc with a carb off an engine 150 cc larger ).
I bet you can adapt something from another Honda product or clone.

https://www.youtube.com/watch?v=PQ9U7flWop0
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Old 10-29-2017, 07:49:37 PM
americancopier americancopier is offline
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Default Re: Honda ES3500 Generator

Honda made it really difficult to retrofit a modern carburetor..The mounts are at a 45 degree angle and the choke and the throttle and choke shafts are horizontal.
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  #9  
Old 10-30-2017, 10:34:31 AM
Newoldstock Newoldstock is offline
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Default Re: Honda ES3500 Generator

Yes I know.
There are many aftermarket kits that allow you to use a GX390 carb for example on a race prepared GX200, or a Tilllotson kit that allows you to use one of a number of aftermarket carbs with a standard flange pattern.
There are even adjustable jet kits that let you turn screws on jap carbs.

How badly you want to fix something you can not find the correct parts for is entirely up to you.
I think if you head over to your local small engine shop and explain the problem you might find the right carb or the owner might have something you can adapt.
If you are going to build an adapter I suggest a thick aluminum plate with studs for the new carb and recessed Allen head cap screws for the adapter.
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Old 10-30-2017, 10:39:28 PM
americancopier americancopier is offline
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Default Re: Honda ES3500 Generator

That still wouldn’t get around the problem of getting the governor to work with vertical throttle controls.the control rod pulls from the bottom and connects to the side of the carb.
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  #11  
Old 10-31-2017, 12:47:00 AM
Wayne 440 Wayne 440 is offline
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Default Re: Honda ES3500 Generator

I'm reasonably sure that I have a similar set in my "good junk pile".

IIRC, the carb is on it and doesn't look too bad.
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  #12  
Old 10-31-2017, 07:33:15 PM
bo4huskers bo4huskers is offline
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Default Re: Honda ES3500 Generator

Do you have a air filter cover and the parts ,?
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  #13  
Old 11-01-2017, 11:11:43 AM
Wayne 440 Wayne 440 is offline
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Default Re: Honda ES3500 Generator

Quote:
Originally Posted by bo4huskers View Post
Do you have a air filter cover and the parts ,?
Already gone, sorry.
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  #14  
Old 11-01-2017, 06:17:28 PM
americancopier americancopier is offline
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Default Re: Honda ES3500 Generator

I found a complete engine for my ES3500 on Craigslist.It is still on the generator and complete.Only problem was is it is in California and I'm in Florida.I got FedEx to pick it up and it's on the way.I only needed the carb so if anyone needs a good G90 long block I got one on the way.
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  #15  
Old 11-01-2017, 06:54:10 PM
I like oldstuff I like oldstuff is offline
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Default Re: Honda ES3500 Generator

Those early engines on the 3500's were bulletproof. They have a roller bearing rod on a heavy crank supported by big ball bearings. You can and of course many did run them out of oil and the piston would seize. But the crank was untouched. Acid swab the aluminum off the cylinder, a quick hone and feed it a new piston and they'd run another bazillion hours.
You can identify them by a crankcase that splits horizontally.

The later engines had a side cover and use a conventional plain bearing rod as it was a cheaper engine to make. The newer engines also vibrated a lot more which would shake the carb linkage apart and lasted perhaps 1/3 as long as the oldie goodie ones.

By all means fix it as it's made many times better than the new stuff from Honda. Unless of course you run into head gen head parts grief such as the regulator. Then ya gotta get creative.
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  #16  
Old 11-10-2017, 09:03:11 AM
Joe Romas Joe Romas is offline
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Default Re: Honda ES3500 Generator

I bought one of those with a blown engine, had a hole in the block, just for the gen head.
Advertised the engine for parts on CL and shipped it across country to a guy who had a unit with a good block but had caught on fire.
I sold him the engine for $20 but shipping was EXPENSIVE
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Old 11-11-2017, 02:19:50 PM
americancopier americancopier is offline
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Photo Re: Honda ES3500 Generator

I just bought a ES3500 from a guy way out in California.
It had a great complete engine with the carb assembly that I needed to fix mine.
The gen head was gone.
I had Fedex grab it they shipped it here to me in Florida.
Very tight engine,smooth and quiet with no smoke or blowby.
Only needed the carb and air cleaner assembly so I might sell the engine eventually.
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  #18  
Old 11-29-2017, 09:24:03 PM
bo4huskers bo4huskers is offline
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Default Re: Honda ES3500 Generator

Did you get it going ?
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  #19  
Old 11-30-2017, 03:08:33 AM
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Default Re: Honda ES3500 Generator

I would say just keep looking on Ebay parts will come up sooner or later and when they do grab them. Those parts are beyond obsolete
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Hey I'll get right back to you on that
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Old 12-01-2017, 06:40:35 PM
Joe Romas Joe Romas is offline
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Default Re: Honda ES3500 Generator

There are two versions of that engine.
Mine was the older and did not have roller bearings on the rod and it went through the block when it broke, I think I paid $75 for it. The oil looked like tar and it was obvious why it blew.
At the time parts were available for the newer version but that was maybe 17 years ago.

Joe
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