Which Spark Plug # to use on a 10HP Tecumseh HH100?

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  #1  
Old 12-21-07, 07:21 AM
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Which Spark Plug # to use on a 10HP Tecumseh HH100?

I have a 1974 10HP Tecumseh HH100-115181E Serial-4255E, Solid State Ignition, on a tube frame Bolens Yard Tractor. I am having a of a time trying to get it running for any length of time. My question on this thread is what is the correct plug to use. The one I pulled out is a RJ8 but I read on a Bolens Forum that the correct plug is an RJ8C.
What is the difference between the two and should I only be using the RJ8C.
The RJ8 was in the engine when I bought it (used) last year.
I'll start with the correct plug and take it from there.

I have other problems with the tractor as well. Should I start a new thread for each individual problem or just keep all the problems on this thread?

Thanks,
Rob
 
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  #2  
Old 12-21-07, 09:27 AM
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Found out by myself

Just got done looking at the Tecumseh website and found where it gives the correct plug which is a RJ8C. It's off to the parts store with me.
Rob
 
  #3  
Old 12-21-07, 10:04 AM
Gunguy45's Avatar
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Thread question

Glad you found what you needed.

If you can edit your original post's title, I would keep it in this thread. If you can't edit the title, start a new one with the other problems you are having.

Best in 2008
 
  #4  
Old 12-22-07, 08:05 PM
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Originally Posted by Intarsian View Post
I have a 1974 10HP Tecumseh HH100-115181E Serial-4255E, Solid State Ignition, on a tube frame Bolens Yard Tractor. I am having a of a time trying to get it running for any length of time. My question on this thread is what is the correct plug to use. The one I pulled out is a RJ8 but I read on a Bolens Forum that the correct plug is an RJ8C.
What is the difference between the two and should I only be using the RJ8C.
The RJ8 was in the engine when I bought it (used) last year.
I'll start with the correct plug and take it from there.

I have other problems with the tractor as well. Should I start a new thread for each individual problem or just keep all the problems on this thread?

Thanks,
Rob
From the Champion spark plug website:
http://www.championsparkplugs.com/re...ID=5483&mfid=2

RJ8C or J8C for the HH100. It didnt list an RJ8, perhaps that's an obsolete number. I bet if you emailed Champion they could tell you about that RJ8 plug.

Good luck,
Paul
 
  #5  
Old 12-23-07, 06:59 AM
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All Champion numbers have been superseded to a "C" suffix.
J8 is now J8C. The "C" was added when they went to copper core plugs. C stands for copper core.
 
  #6  
Old 12-23-07, 09:27 AM
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The RJ8C is the orginal style plug for this engine and has a 3/4 in hex. We have found that as the engine ages you might find that the J19LM will give you better plug life and not foul out. The J19LM or RJ19LM have a 13/16 in hex and are hotter plugs for air cooled engines.
 
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