Model #917270912 CRAFTSMAN Lawn, Tractor

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Question and Answers

Q:

Tractor shuts off when the break is released 917270912 Craftsman Craftsman 19.5hp 42

Q:

lawn tractor will not start 917270912 Craftsman Craftsman 19.5hp 42

A:

Thanks for the inquiry and for being a valued member.

I am sorry to hear of the issue you’re having with the tractor starting. I know how frustrating that is.

The solenoid has two large cables mounted to it, one from the battery and one going directly to the starter motor. When you turn the key to the Start position, a trigger voltage is sent down to the solenoid and the solenoid should connect those two large cables to send battery voltage directly to the starter motor.

There are a couple things to test for. The first you already noted, the contacts in the solenoid are large and you can normally hear them make the connection with a click when you turn the key to the Start position. The second test is to see if the solenoid is connecting the two large cables. You can do that by removing the cables and checking for continuity across them with an Ohm Meter or Test Light when you turn the key to the Start position. The last test is to confirm the trigger voltage is reaching the solenoid when you turn the key. There should be one or two smaller wires going to the solenoid as well as the two large cables. One of those wires should have approximately 12 volts on it when the key is turned to the Start position (if you have two wires, the other one will be a ground wire only).

In this case, you are hearing a click which likely indicates the solenoid is getting trigger voltage and is trying to connect the cables so the solenoid itself is likely okay. You can do a quick confirmation if you take a screwdriver with a plastic handle and touch the metal blade across the two mount bolts for the two large cables. Be sure to protect yourself and hold the handle of the screwdriver only since there should be battery voltage present that could spark or quickly create heat.

When you manually connect, or jump these two cable points the starter should begin to spin. If the key is off the tractor will not start but the starter will still spin (since you are manually powering the starter motor).

I am guessing that in your case the tractor will not try to start, since it sounds like you can turn the key and the solenoid engages but nothing else happens. If that is the case there are a couple of things that might commonly be happening. You might have a bad battery or starter cable (one of the two large ones connected to the solenoid) or something may be preventing the starter from turning regardless of input. A quick way to check both is simply to test for power where the one large cable connects directly to the starter. If you have 12 volts or more there when you turn the key to Start then everything is working up to that point and the starter has an issue.

It could be a failed starter motor, but often it is something simple like a jammed gear where the starter engages the flywheel to turn the engine over. In that case you can try manually turning the engine to free the jammed gear. Moving the engine output pulley, or even the screen at the blower housing, back-and-forth will often do that.

If you had low, or no, voltage at the starter when you tested and the solenoid tests okay, then one of the two large cables to the solenoid has failed inside or is not making a clean contact at a mount point.

I hope this helps and thanks for using SearsPartsDirect.com. We appreciate your business. 


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Jeff Wallace Sr -
Sears Technician
August 12, 2015
Q:

the lawnmower will not move 917270912 Craftsman Craftsman 19.5hp 42

A:

Thanks for the inquiry and for being a valued member.

I am sorry to hear of the issue you’re having with the tractor. I know how frustrating that is.

The first question is have you removed the rear wheels. The rear wheels have a square axle key that drive them. 

If the axle key is in position, the next check to make is if the drive belt is still on. With the tractor on a level surfaced and the engine off look under the tractor at the drive belt. The belt should be free of slack and go around all of the pulleys.

Next check the brake lever on the transaxle. If it has been sitting for a long period of time it might be stuck on. The lever is located on the right side of the tractor inside of the frame. I recommend working the lever back and forth to make sure it is moving freely.

When you are looking under the tractor, have someone move the shifter. When the shifter is moved, you should see the shifter on the transaxle move. If the shifter is properly attached, have someone start the tractor and let out on the brake. Now carefully look under the tractor at the Trans axle drive pulley. The drive pulley should be spinning. If the pulley is spinning, the problem is most likely an internal transaxle issue and it will need to be serviced.

I hope this helps and thanks for using SearsPartsDirect.com. We appreciate your business.  

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Jeff Wallace Sr -
Sears Technician
August 02, 2015

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