Update on the 1977 Wheelhorse B80 project.

johnlobb · Aug 20, 2019

Well, I got the fuel grommet and fuel petcock installed in the fuel tank which I also installed, and hooked the fuel line up. I also found out where the throttle cable hooked up, and did that. We bought a new battery and solenoid, and installed them. The motor will not turn over with the key, but I can make it spin over by jumpering the solenoid terminals. Does anyone think the problem could be the ignition switch? Enclosed are 2 pics of the wiring.

FBH44 · Aug 20, 2019

I always replace the ordinary steel nuts and bolts on batteries with stainless steel. Stops corrosion, stops resistance in the electrical circuit, does not corrode. Helps a great deal, I always think. Makes it easy to assemble and dissemble.

gab · Aug 20, 2019

Looks like you jumped the pto switch, is there another one on the clutch pedal switch.

joe csuti · Aug 20, 2019

There is also a safety sw on clutch pedal,you'll probably have to hold clutch pedal down with your foot while starting eng with key,there's also a sw for seat(deadman sw)this usually only affects eng ign.My wiring diagrams for B series only go back to 80.You might try going to red square wheelhorse website or toro website to see if operators manual avail as a free download,same usually has a wiring diagram of tractor.

Rodney51Cub · Aug 21, 2019

Is it possible you have the wrong starter solenoid. In your first picture there is only on wire on the small solenoid posts. You may need the three post solenoid instead of the four post or your missing a wire. I googled a wiring diagram for a B80 and it looked like you need a three post solenoid but could not tell for sure because the drawing was to small.

Keith True · Aug 21, 2019

I have three of those series tractors,12,14,and 16 HP.The only safety start switch is the pedal switch.No seat or PTO switch.Those only switch the ignition anyway,not the starting circuit.I see you have a 4 post solenoid,did you check with a test light to make sure you have the signal wire hooked to the right terminal? Also,how did you come to buy the solenoid that you did?If you just walked into a store and matched it you could easily have gotten the wrong one.Modern snowplow solenoids look like yours,but they work differently.They won't work in your tractor.Just because they look alike doesn't mean they act alike.Some solenoids activate by sending a hot signal to it,and some activate by GROUNDING the little wire.On that series tractors you need what the parts guys called an old Ford solenoid.Hot cable from the battery,cold going to the starter,and a signal terminal that activated when juice was put to it.

johnlobb · Aug 22, 2019

Keith, we bought the new battery and solenoid at Menards in the small engine parts section. And when I first installed the new solenoid, I hooked it up to the other terminal. Did not work. When I had to replace a solenoid on my Troy Bilt (2001 22hp B & S Intek) I replaced a 1 terminal solenoid with a 2 terminal 1 from Family Farm and Home small engine repair parts dept and it has worked well. I did not bring my VOM with me, next time I will to check if there is power coming from the wire that comes from the key switch when the key is turned to start.

Keith True · Aug 23, 2019

If you bought it just by comparing it to one you had it could be the wrong one.Those solenoids might look the same,but do different things.A little parts store here in town had a big display of small engine/tractor parts on the floor.Guys would come in with ignition switches,and try to match them up.The store owner would try to tell them,you need to have me look up your application,just because the plug fits doesn't mean it is right for you.He said he had two customers burn electrical parts in Craftsman tractors because they bought by comparison,not application.You really need to test things first,just throwing parts at it usually doesn't work,and using wrong parts can sometimes make it worse.

Bo dawg · Nov 3, 2019

Your solenoid is fine, its more than likely a safety switch, (seat, clutch, or PTO). You can by-pass all these to see if it will start with key then.
Check all fuses.

Bo dawg · Nov 3, 2019

Your solenoid is fine, its more than likely a safety switch, (seat, clutch, or PTO). You can by-pass all these to see if it will start with key then.
Check all fuses.

Update on the 1977 Wheelhorse B80 project.

johnlobb

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FBH44

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gab

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joe csuti

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Rodney51Cub

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Keith True

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johnlobb

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Keith True

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Bo dawg

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Bo dawg

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