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#1
05-05-2019, 03:17 AM
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1863 Drive control lever won't stay where I put it
The saga of my 1863 problem child continues. It's going to be a great tractor when I get the bugs worked out, I'm sure. So far though, it's been the most expensive free machine I've ever had!
So I get it started, release the brake, then set the forward speed. As I move along, the lever starts to slide back to a crawl. It never goes completely to neutral, but it will move to it's slowest forward speed. Which is SLOW. Coupled with the fact that I have to manually hold the PTO switch in the start position, I currently need 3 hands to mow the lawn if I want to be able to steer. Not optimal, since I only have 2 hands. Ideas? 
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#2
05-05-2019, 06:01 AM
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The speed control is held in position by the compression of a friction disk on the shaft. It is located on the drivers left side behind the edge of the black dash. A little tight to access, but possible without big disassembly. Suggest tightening slightly.
The PTO circuit has a relay. If the battery is low, the relay will not function. It is also wired thru multiple safety switches. Suggest checking wiring connections and functionality. Safety switches located under seat, brake pedal arm (under tunnel cover), speed control arm behind dash. Dirt at contacts, connection terminals or wiring breaks are common on these tractors.
__________________
1863, 1864, 48" and 54" mower decks, 54" snow plow, 451 snow blower, TracVac 580
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#3
05-06-2019, 05:23 PM
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Thanks for your reply. The plastic is cut out around the nut. I never realized what it was before, but the nut to tighten the lever is exposed. Crudely, but it works. Apparently the previous owner or his mechanic had this issue enough before to hack away the plastic for easy access!
As for the PTO, I know it's not the battery. It's 100% charged and checks out fine. I'll check out the switches, but if one of them was bad, wouldnt it prevent the tractor from starting?
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#4
05-07-2019, 10:10 AM
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The interlock switches are used in different circuits. Best advice is to look at the wiring schematics for each function to determine which switch and contacts are used.
Engine crank uses one side of the brake switch and a pair of contacts on the PTO switch PTO start uses three contacts on PTO switch, one seat switch, reverse relay and reverse switch PTO run uses same PTO switch contacts, but current flow is different after relay is energized. After 20 years, I replaced all the switches, cleaned the terminals due to intermittent start and PTO operation.
__________________
1863, 1864, 48" and 54" mower decks, 54" snow plow, 451 snow blower, TracVac 580
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