Cranking Speed

This is a 1955 International 100 with a new 6 volt battery. It hasn't started in 1-2 years but I now have it running. Not having been a tractor owner, it seems the cranking speed is slow. It about 55 degrees that day. Thoughts?
Cranking Speed
 
A six volt turns over a lot slower than 12 volt engine. Make sure all your starter/battery connections are clean and bright. Check the size of the cables to the battery, a much heavier cable is used on 6 volt systems. My Cubs have a 1ga cable and my Case 310 has 00ga cables,
Chuck
 
On my 6 volt Farmalls that I want to keep 6 volt to retain the originality of the system I try and run the ground cable to one of the starter to frame mounting bolts. I also use 00 size cable with the terminals soldered on the cable. Any decent auto parts supplier can make them up for you and try to keep most of the slack (extra length) out of the cable as well. All connections should be clean and bright and I also use external washers at the ground connection to get a "good bite" into the cable terminal and cast tractor metal.
I purchased a Farmall H tractor which was delivered to me and whole time the seller was driving here his main concern was if it would start once he arrived to unload the tractor. Sure enough it barely turned over but did start. After I had new cables made and on the tractor along with cleaning all mounting areas and hardware along with grounding the cable as noted above I got on my cell phone and let him hear it start. He indicted he had never heard it start so easy, Hal.
 
cant get into video , but anyway... that little engine should wheel over pretty much like a 12 volt system if thing are in order. my 100 would just wheel over. i have mostly 6 volt tractors and they wheel over good. from the W400 to the W4. if you were standing by my W400 when cranking you would think its 12 volt. they started good when new and no reason not to now. that temp. would have little impact on starting.
 
Slow cranking can be symptom of brush issues. The starter has four brushes, two hot and two ground. If one is bad, it will crank at half power. Ir real cold it might just give you a half-turn or nothing at all.

The issue can be broken or worn brush, broken spring or mount, or bad wire connections to field coil or starter body ground. Open it up and have a look. Parts are easy to find. NAPA has brushes and springs for those Delco starters.
 
yes saw the video, it is cranking way too slow. the starter needs work and check the cables.
 

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