MZ6125 Won't Crank

SombreroMan

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May 22, 2020
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Hi All,

I have a MZ6125 and this spring she decided to not every other year. She started up and I let it warm up for a few minutes and then hit the PTO to test out that. Once I did that, everything died and hasn't restarted since. I've been working on this for over a month and the wife has been patient, but I need to get this mower fixed soon and most places are backed up for months, so I've taken to working on it myself.

Current situation: When turning the key, the starter solenoid clicks, but the mower doesn't not attempt to start (no movement at all by the motor).

Things checked:
Tested both fuses with a voltmeter for continuity and they passed.
Checked oil and it is 3/4 up the hashed part of the dip stick.

Things replaced:
Starter Solenoid (with a hard wired ground going from the base of the solenoid mounting bolt to the motor ground, by the the dipstick)
Ignition Switch
PTO Switch
Lever switches (both of them)
Battery

Voltages: 12.6 at the battery, 12v on the accessory wire when turning the key, but 0v on the other side of the starter solenoid and thus it does not start.

Historically, this mower has had issues from time to time when turning on the PTO would kill the engine and it would take some time to restart it.

Thank you in advance.
 

bertsmobile1

Lawn Royalty
Joined
Nov 29, 2014
Threads
32
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Hi All,

Voltages: 12.6 at the battery, 12v on the accessory wire when turning the key, but 0v on the other side of the starter solenoid and thus it does not start.

Historically, this mower has had issues from time to time when turning on the PTO would kill the engine and it would take some time to restart it.

Thank you in advance.
0 volts where ?
on the thin wires or heavy cables ?
First step to solving electrical problems s always finding a wiring diagram
In this case on page 34 of the parts book ( should have come with the mower but can be downloaded from Husqvarna )
Because the starting position is a momentary switch I like to pull the plug from the back of the key switch and jump B to S.
Which in your case should energize the yellow wire so then you can check the yellow wire for 12 V all along the circuit till the brake switch where the yellow becomes a white wire which should go to either the engine plug or direct to the starter solenoid.
 

slomo

Well-Known Member
Joined
Jul 14, 2019
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576
Check your ground cable. Clean and snug all connections.

slomo
 
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