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Jacobsen Chief 100A


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#1 bessy61 OFFLINE  

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Posted May 13, 2016 - 11:54 AM

Working on resurrecting a 2nd generation tractor. Does anyone have an image of where the voltage regulator would mount? The dash on this old Jake doesn't allow enough clearance for new generation regulators.

#2 crittersf1 OFFLINE  

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Posted May 13, 2016 - 12:00 PM

:welcometogttalk: :camera:


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#3 bessy61 OFFLINE  

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Posted May 13, 2016 - 03:32 PM

Been working with this tractor on and off again for two years. Have the frame, body and a couple implements. Located and installed a K181 engine, found an original starter generator. Rebuilt a wire harness. Need to identify a voltage reg. and figure out where stock location is on the tractor. Also searching for a couple other parts to be complete. Any input out there?

#4 boyscout862 OFFLINE  

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Posted May 13, 2016 - 04:24 PM

Welcome to GTT. Have you checked our Manuals Section for the info that you need? Good Luck, Rick



#5 KennyP OFFLINE  

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Posted May 13, 2016 - 05:22 PM

:wave: Welcome to the forum! From looking at the parts manual, I'd say it fits below the switch.



#6 bessy61 OFFLINE  

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Posted May 13, 2016 - 08:21 PM

The reg. Dimensions must have changed. The one I have is too large to fit in that location. Also looked at fabricating a bracket to mount just above the starter generator, however the fuel tank with sediment bowl mounts just above the gen.

#7 bessy61 OFFLINE  

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Posted May 16, 2016 - 11:44 AM

Anyone know if the first generation Jacobsen chief had a special voltage regulator? I had one but the terminals come in contact with the sheet metal. Just received one I ordered on line for a K181 and same issue. Each has 4 terminals, 3 on one side and a 4th on the opposite side. Can any 12 volt reg work or does it need to match the starter generator or engine

#8 HALFSCALE OFFLINE  

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Posted May 17, 2016 - 02:53 AM

There are different voltage regulators, there is a version where the wires come up from the bottom, MTD used this type on the tractors with very little clearance, haven't had any luck finding a replacement. We've been taking them out of scrap tractors and then having them tested.



#9 bessy61 OFFLINE  

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Posted May 18, 2016 - 08:05 PM

I guess if getting an old tractor running was easy, it wouldn't be fun. Came across a reg. From a cub a few years newer than my name. I got it to fit but it was tight. I insulated the terminal and near by potential contact point just to be safe. After polarizing the reg. I turned the key and pressed the starter button. The starter generator spins but not enough amps to crank the engine. Going to install a new battery this weekend. If the engine has spark everyone here will hear me screeming.
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#10 bessy61 OFFLINE  

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Posted May 19, 2016 - 03:38 PM

New issue. Couldn't wait til the weekends to drop a new battery in. The issue ihave is the tractor turns over fine with use of the push button regardless of the two position key on or off. Is this normal? Seems like the key should cut power to the starter generator when off or does it only cut spark? Any help is greatly appreciated.

#11 bessy61 OFFLINE  

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Posted May 21, 2016 - 03:04 PM

Okay, so the old Jacobsen lives. After a couple hits with the push button, the engine fired right up. After it ran for a few seconds, white to a light grey smoke and oil Bevan discharging from the muffler. No abnormal noises were heard but shut it down promptly. The engine before this had been sitting in someones shop for an unknown # of years. The oil was replaced prior to the engine install. Has anyone experienced what I'm seeing. Engine # 30290D K181.

#12 KennyP OFFLINE  

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Posted May 21, 2016 - 04:18 PM

Sounds like the rings are stuck.



#13 bessy61 OFFLINE  

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Posted May 22, 2016 - 01:49 PM

Any suggestions on a fix? I've never opened en engine before. What should I look for

#14 bessy61 OFFLINE  

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Posted July 25, 2016 - 08:13 PM

Anyone happen to know what oil to put in a gearcase on a Jacobsen chief 100A. The rear end spins freely, but when in gear, the tractor hesitates when trying to move?

#15 KennyP OFFLINE  

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Posted July 26, 2016 - 05:48 AM

Well, according to the manual for the 100C & D, it is SAE250. No Idea what that is. I would think the 100C would be the same. Here's some info I Googled.






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