And so it begins.
 

This afternoon, I got started with the engine swap on my 1712.

I decided to keep the wiring harness in tact, for possible use in a CCC built red 782, that I also need to get running. So, I bought a complete harness and key switch, and will be swapping it as well.

Are you installing an M-18 ???

:bigthink:

Or a Vanguard?

...or a Command?

Or a Kubota…

Or a Honda?

Or eo ........

Maybe the best of the best....an Onan.

I was thinking maybe a Subaru

Yes, an M18. It came out of an 1862, so there are a few differences. The 1862 engine has a different/much larger PTO pulley, and the fuel pump is different. The muffler exit pipe is longer, but some measuring and a hacksaw fixed that. The muffler shrouding is also different, so I will have to transfer that as well.

I performed a M18 swap into my 682. I was able to use all of the exhaust/muffler parts from the series II KT17 onto the M18. I also used the original PTO from the 682. Obviously, I bought a new ignition switch compatible with the M18, and just modified the existing 682 wiring harness.

I am swapping over the exhaust shrouding and PTO, from the 1712. I am keeping the 1712s muffler, because it has IH on it. Yes, I could have modified the existing wiring harness, and Roland sent that to me... But, I have a red CCC built 782, that needs a harness. So I decided to keep the 1712s harness in tact, and I bought a complete harness and key switch from an 1806. That way it is already compatible, with the M18

Tonight the M18 and the 1712s chassis had a date with the air gun. Got them both decently cleaned up. Transferred the fuel pump and lines, complete PTO clutch, and driveshaft coupler with flex disks, from the KT17 Series II onto the M18. Also moved the left cylinder shroud from the KT17 to the M18 (a PO had done some butchering on the M18s left side shroud)

Keep the updates coming.


:IH Trusted Hand:

Well, it runs, but apparently has carb issues.

I have not messed with a carb that has a solenoid on it. This M18 engine came out of an 1862, and it has an adjustable Walbro carb on it (original)

What is the purpose of the solenoid. What are the symptoms of a faulty solenoid, or diode??

I would not mess with it. I would use the one from the KT17 as long as it isn't a fixed jet Walbro! They are terrible. The Carter #26 is the one to have. Full adjustability and no shut off solenoid.

Supposedly it's an anti backfire solenoid, slams shut to stop gas from tricking into the carb to prevent backfire, or so I heard. It has to open to let fuel into the carb from the float bowl to run.

Thanks Gary!

I got rid of the Walbro, and installed the Kohler carb from the 1712s original motor. I made sure the needles were set at 3/4-1 turn on the low, and 2 1/2 turns on the high.

This spring, I had totally disassembled it, soaked it and put a rebuild kit in it....I know it's OK.

IT'S ALIVE!!!!!!!!!

She runs like a top now.

Good to hear, and not surprising.

FWIW:
The the fuel shutoff solenoid does multiple things beside helping to eliminate soiling yer britches when it backfires. :biggrin2:

The EPA had a hand in it to prevent raw fuel from entering the combustion chamber, adding about as much pollution as a flea fart.
Also it tends to prevent "dieseling" which is the engine continuing to run-on, after the spark is stopped because the combustion chamber is hot enough to cause ignition (usually called preignition)

So now you know all the reasons for it.
Its a good device when it works :bigthink:

I guess I have been fortunate with all of my older machines. None of them have ever backfired after a shutdown. Of course, I idle all of them down for a brief period before shutting them down. It's a short cool down. It's the little things like this that make the difference. Also, I engage the electric PTO's at a low engine speed, then place the engine to full throttle to mow.

Me too, no issues.

I worked the 1712/1812 for about 3 hours today. It didn't have a hiccup at all.

I do need to back the idle screw out, just a touch though.

Tomorrow, I'll run it for a few minutes, then do another oil change. Then it will be ready for normal duty.

Interesting stuff!

I'm thinking this one is gunked up, from sitting for 3 years or so.

As you know, I have a 782. I have run both the Kohler and Walbro adjustable Carbs. Although the Walbro adjustable is better than the Walbro fixed jet, I'll take a Kohler (Carter) any day.

:IH Trusted Hand:

It has a place, but it also adds a new failure point :)
Beats a manual shutoff for accessibility, though.

I don't think Carter ever made a bad design Carb!
From a little 2 hp Briggs, to the larger 4 barrel carbs on cars/trucks.
Simple and effective.
I've been around them since the 50's :beerchug:

I worked the 'ol girl for about 1.5hrs tonight. Brought her inside and gave her a compressed air bath. Then did a oil and filter change......the second one in less than 5hrs of use.

I changed the oil and filter before I started it the first time Saturday. And it was already very black, so it might take a few changes, to get the M18 cleaned out.