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Need Help With Tapered Shaft Briggs

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#1 johnaq OFFLINE  

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Posted May 20, 2015 - 06:49 PM

I am going crazy trying to replace a generator head. I can't find anyone that can identify the taper on the briggs and stratton 11hp engine. Even Briggs and stratton! It is a homelite LRE5500. Here are some pic's and shetch if it helps. I do have the old head if someone needs it to make an adapter. Also any ideas on where to buy a head?



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  • shaft pic.JPG
  • shaft2.jpeg

#2 grattone OFFLINE  

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Posted May 20, 2015 - 09:31 PM

John, I'm not sure what you are talking about when you refer to the head. I went through a bunch of trouble trying to replace a motor in a JD Gator , with a tapered shaft for the cvt clutch. What I learned was that there are 2 types of tapers out there. One is a generator taper which you are dealing with and the other is what they refer to as a 1: 10 or 10 % taper which is what the gator and golf carts use. Briggs, Kawasaki, and Robins Subaru + more have these motors with the generator taper.

Hope this helps


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#3 Bill 76 OFFLINE  

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Posted May 20, 2015 - 10:19 PM

Using your dimensions the shaft is 1.878 inch per foot taper,I don't have my machinist handbook with me so I can't convert to degrees.When measuring tapers if you measurements are off a more than a hair the numbers can change fast.

#4 boyscout862 OFFLINE  

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Posted May 21, 2015 - 02:01 AM

Welcome to GTT. You didn't post a pic of the generator "head" but if it is the same as the Coleman Powermate the problem is often the brushes or a blown diode. I have picledup many generators with either a blown engine or head for under $25. Right now, I have three of each and will combine the good parts to get three working generators and leftover parts. The last head I picked up was at the transfer station attached to a blown 8 hp Briggs. Just look around for one and think cheap. Check our Manuals Section for 3 free downloads per day. Good Luck, Rick

#5 johnaq OFFLINE  

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Posted May 21, 2015 - 06:41 AM

This was the one I was looking at on ebay and it doesn't look like the taper on my engine. My head had bad brushes which I fixed and it worked great...... until a bracket inside came loose and ripped up the windings!


pdf.jpg  S16W Spec Sheet
Tapered cone- generator head 5000 watt continous/6250 watt surge.
  • 3600rpm 60hz
  • 3600rpm 60hz, 2-120 volt 20 amp outlets, and 1-120/240 volt 30 amp twistlock receptacle.
  •  This generator head is made to fit an engine with a tapered shaft 4-11/32" or 3-51/64" long. J609B cone taper
  • An 10 hp or more engine is required for full output.
  • S16W-105TP.
  • gen%20taper.JPG vtwin%20taper.JPG
  • Brushless generator design. J609B