Billybobscalps
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- Jul 30, 2021
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I have an older Scag tiger cub. The model number is STC48A–20CV. For the past six months or so, the mower has an intermittent starting problem. I replaced the battery in the spring. After sitting for several days, when turning the key on sometimes nothing happens at all - no click or anything. For a while, it seemed if I pulled the PTO switch on and then off, after one or a few times the mower would crank. Lately that hasn’t seemed to work. I do get a strong click from the PTO when I turn the PTO switch on and off with the key in the on position(mower not running) so I believe the PTO switch is working fine. I have cleaned and tested the four other safety switches for continuity and they all have continuity. When the key finally makes the engine crank over, the starter cranks strong and the mower fires right up. Twice in the last 20 hours, the engine has just quit while cutting. It cranked right back up both times. Typically once the mower has started the first time, it can be turned off and back on and starts normally.
Today, after trying to start the mower many times, I decided to jumper the solenoid terminals with the switch in the on position. When I laid a screwdriver across the posts, I could hear the starter spinning up, but the bendix did not engage the flywheel. After a couple more tries simply turning key switch, the motor finally fired right up and ran great.
I am a little technically challenged, but I would love some ideas on what may be going on.
Thank you very much for the help.
Today, after trying to start the mower many times, I decided to jumper the solenoid terminals with the switch in the on position. When I laid a screwdriver across the posts, I could hear the starter spinning up, but the bendix did not engage the flywheel. After a couple more tries simply turning key switch, the motor finally fired right up and ran great.
I am a little technically challenged, but I would love some ideas on what may be going on.
Thank you very much for the help.