My self propel cable on my mower does not work.

There should be 3 pulleys one on the motor on top of the blade, one on the axle for the wheels and one that goes to your cable to engage that pully and tighten the belt, take the cover off that hides the axle and pull your handle for the self propell and see if its tighting, some mowers have a little adjuster to tighten the cable on the self propell handle or even on the cable itself, did you make sure to run the belt between the guides over the blade, let me know what you find so we can further help

Yes it is the transmission. A Mower shop will charge you about $225 to fix.. I order parts online and fixed mine for $90. Transmission consist of 3 gears which turns the rear wheels to self-propel.

I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309

Make sure the cable to the transmission moves freely. If all the cables and lever s move freely than it more than likey is an internal gear needs replacing.

You've not provided much information, but my guess is that you need a new belt. If this is not the issue, then please elaborate. Best of luck to you.

The self propel cable needs to be adjusted. This can be done with a 7/16 wrench. loosen the nut that holds the self propel cable in place. You may need to pry this open with a screwdriver. Don't overdo it or you could break the plastic. Once the cable is loose pull it toward the mower deck, once the slack is out of the cable press the self propel handle in about a half of an inch. This should be close to what it was from the factory. Then re tighten the nut. And check the self propel to make sure it is engaging properly. If you hear a grinding noise when trying to engage the transmission then you will need a new transmission. Depending on if it is a front or rear self propel the part alone is either $60-$75 retail. Most repair shops will charge an hour to do this repair. I hope this answers your question.

Get a replacement cable, part number should be in your user manual...when you get the cable it should have directions on how to replace.

Hi,
I tried to find your specific number but had no luck. I did find a manual for 917-372850
The link below is the manual. Page 4 is the exploded view of the drive... I'm hoping it is similar to yours.

http://www.outdoordistributors.com/pdf/AYP/AYP-MODEL-917.372850-PARTS-LIST.pdf

you may have lost the spring that pulls the transmission drive belt down or have the cable adjuster too tight.word of caution here, the cable goes thru the engagement lever and if you overtighten it the lever will crack or break. if it does the complete transmission will have to be replaced.seems they dont make the lever avalible seperate.

you probaly have a broken gear or engagment lever. the part the cable goes through before the cable goes thru the deck. you also could have sheared a pin or the plastic gear that drives it.

there is a panel in front of the gear that completes the curve of the blade path that you can remove with a single bolt on the outside of the mower between the wheel and the deck