Craftsman riding lawnmower blowing fuses.? My mower starts fine, runs shortly, buts blows a fuse. This has...
My mower starts fine, runs shortly, buts blows a fuse. This has happened a couple times. Battery connections verbs. Good sparkplugs. All new maintence.
I am lost!
Try buying a slow burn fuse. Sounds like you getting a surge contained by the charger. Or maybe just replace the fuse near a breaker at the same amps. Then if it blows you can just reset the breaker and start it up again.
Both concept will just cover up the problem but it sounds like it doesn't start to often?
Are you sure you are using a fuse with the proper current rating?
If your mower doesn't hold a voltage regulator, or if it has one and it's bad, that could create this problem.
Also, don't discount the possibility that there's an intermittent short-circuit that blows the fuse while the mower is running or being used - vibration or other power-driven movement could cause a short that disappears when the mower is stopped.
Answers: I think the fuse is a moment ago for the starter circuit so that's rules out spark, safety switches, etc. Check for a wire that the insulation have been rubbed off or nick near the off/on switch on thru the frame to the starter solenoid. Pay special attention where the wires shift thru holes in the frame or near metal edges. If you be very careful, you could waggle wires with the engine running to try to locate the problem. I guess a bad on/off switch could short out also. Intermittent problems are especially hard to find sometimes.