My ZTS7500-26HP briggs will not engage blades when PTO pulled nor do I hear a clicking noise.Tested clutch-2.6 ohmes.PTO sw has continuity. What would cause clutch to go bad?
Check voltage at the clutch with a DMM. Connect black lead of the DMM directly to the battery NEG. Then test both sides of the clutch electrical connector with the red probe. One side must read 12 volt battery voltage and the other side must be zero.
Likely you will find either no 12VDC on both sides of the connector or 0VDC on both sides.
If you have 0VDC, then there is no power to the clutch and a safety switch is most likely cause.
If you have 12VDC on both sides, then the clutch return lead has no reference to battery NEG. Likely open frame ground.
The clutches are electro magnetic, so there is an electrical winding inside, once 12 volts is applied to the windings it creates a magnet which draws the centre plates in and engages the pulley, so check you have a 12 volt supply to the clutch, if yes, other than the bearing replacement there is little else that is serviceable.
Answers & Comments
Check voltage at the clutch with a DMM. Connect black lead of the DMM directly to the battery NEG. Then test both sides of the clutch electrical connector with the red probe. One side must read 12 volt battery voltage and the other side must be zero.
Likely you will find either no 12VDC on both sides of the connector or 0VDC on both sides.
If you have 0VDC, then there is no power to the clutch and a safety switch is most likely cause.
If you have 12VDC on both sides, then the clutch return lead has no reference to battery NEG. Likely open frame ground.
The clutches are electro magnetic, so there is an electrical winding inside, once 12 volts is applied to the windings it creates a magnet which draws the centre plates in and engages the pulley, so check you have a 12 volt supply to the clutch, if yes, other than the bearing replacement there is little else that is serviceable.