Ryobi 17.5hp riding mower will not start. New battery, solenoid, starter, and battery dables. Was turning over very slowly, now only clicks at solenoid.

Try jumpering battery directly to the starter terminal. The ignition switch or start relay could be the problem.

Clicking Sound While Attempting to Key Start - Riding Mower

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Jul 19, 2002 - Why does the tractor make a clicking sound and not start? ... Thesolenoid connects the battery to the starter motor when the solenoid is energized. ...It can click, but not make a complete connection. ... Starting - Riding Mower · Professional Shop Manuals · Basic Troubleshooting - Lawn & Garden Tractors.

How Do I Tell If the Starter Solenoid Is Bad on My Kohler ...

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Most large Kohler engines on riding lawn mowers use an electric starting system. ... A bad solenoid can deny electricity to the starter motor and prevent engine startup. ...Lawn Mower Will Fire but Not Start · Replacing a Solenoid on a Craftsman Lawn Mower or Tractor · How Does a Starter Solenoid on a Lawn Mower Work?

My Bolens lawn tractor won't start. It just clicks when I turn ...

CLicking is usually a sign of low battery voltage. When the solenoid clicks on , the starter is added to the battery load. The voltage drops to below what will hold the solenoid and it disconnects the starter. No starter in the circuit raises the voltage enough to click on the solenoid and the cycle repeats. If you have a red jumper cable, jump the battery positive (+) to the big bolt on the side of the starter motor with a heavy duty red wire on it.
If the engine does not turn over, you have a battery isue.

Clean all the large wires to the battery and to the Starter solenoid

what engine does it have? also try using jumper cables between the battery and the starter this will see if the cable is bad

bypass the safety switches to test them while looking for the bad one the clutch/brake is the most common one

Slow turning and the click click of the starter solenoid indicates either a low battery and/or a loos battery or ground connection. One also couldn't rule out a bad starter motor or solenoid.

The starter solenoid sounds to be bad. Follow the + cable from the starter and it will lead to the solenoid. This is usually about $10. The battery produces power to the solenoid which then produces power to kick the starter over. The clicking is the contacts in the solenoid you are hearing.

The starter itself may be bad. Take the starter off, connect it to the battery on the mower with jumping cables + to + and - to battery and ground other to starter. It should spin as if it was going to start the mower. You may have to try different places on the starter for a good ground. If the starter spins, then it's not the starter, but binding. If it was electrical such as seat switch or blade switch it would still turn over but not start. With the starter clicking, it sounds to me that the solenoid is fine.

Sounds like the cable or connection between the battery and starter.