Craftsman 917.28700 not starting. No sound or something heard when crucial turned over. Changed battery, solenoid, wiring harness, seat security switch, clutch attachment switch, and also ignition. Can jump off in between solenoid and also battery or battery and starter. When started chisels dont connect unless ns kinda bounce on seat. Once started and brake off It will die, for this reason I understand the safety and security switch ~ above the seat is working.
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The over link is to the wiring diagram for your mower. First, i would additionally check the fuse that is inline between the solenoid and also ignition, and also do a pin-to-pin continuity come make certain the cable harnesses space not damaged. Specifically check the solenoid (white wire connection) to pen S top top the ignition - ns would additionally check this v the PTO both engaged and also disengaged, as well as the clutch/brake pedal on and off. This will also test the PTO and clutch switches in line.
Since you"ve replaced whatever else, mine guess is the PTO move which is breaking the circuit in between the ignition and also the solenoid. Remove, clean the contacts and also see what happens. Maybe even give that a wiggle when trying come start.
Okay, your measurements show you have an open up circuit between the ignition pin S and the solenoid"s white wire post, so now we require to find out wherein we shed continuity. I simply realized that what I call the PTO switch, your mower call a Clutch attachments Switch but labels it as the PTO move in the diagram. Therefore I"m going to still call it the PTO switch because that"s what I"m used to and that"s what the wiring diagram phone call it.
First, let"s check the PTO switch. Remove the PTO switch and test in between pins C and H on the switch. Girlfriend should have continuity as soon as the switch is disengaged and also no continuity when engaged. If not, climate replace.
Second, through the PTO move still removed, check continuity in between ignition pen S and to where the PTO switch pen C plugs into the harness. This should have actually continuity. If not, you have a broken wire in the exploit (it is labeled as the white wire on the diagram). You have the right to either solve or replace the harness.
Third, through the PTO switch still removed, test continuity in between the white wire article of the solenoid and to whereby the PTO switch pin H plugs into the harness. This examine goes with the Clutch/Brake switch, therefore test when the clutch/brake is both in the down and also up positions. Up should present continuity and Down should lose continuity. If not, girlfriend will require to check the area wherein the clutch/brake pedal and the wiring exploit meets. Most likely a dirty terminal, a loosened connection, or a broken wire.
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Now, as to your inquiry of whether depressing the brake have to disengage the blades... No. The wiring diagram reflects the PTO move at pen D goes come the electrical clutch directly, and does no go v the clutch/brake. Additionally, the clutch/brake pedal is part of the starter circuit and also should not influence an already running engine.