Tighten the blade bolt..shaft cud b bent causing vibration. Belts cud b bad
SOURCE: my craftsman rotory lawn mower 6.5 hp self
You have water in in the carborator, I'll bet. I had this same problem. Here's what I did.
I emptied the gas tank, put in a new spark plug, changed the oil and then unscrewed thd big nut on the bottom of the float container (attached to the carborator near the rubber gas injector button) and emptied and cleand the float container. Then i put it all back together, pulled the cord and the same thing happened, but this time i could keep it going by having my daughter constantly pushing the rubber gas injector button. After it had run for a minute with this constant pushing of the button, all the water was gone from everytwhere and it worked.
SOURCE: Craftsman self propelled lawn mower will not propell
Take off the cover up front on the self propel. Engage the self propel and make sure your cable is not broken. If that is ok then remove the wheels and inspect the molded cogs on the inside of the wheels and make sure they are not stripped out. If they are stripped go to www.sears.com and on the tool bar click on parts direct. Under model number enter yours and it will take you to a parts diagram. Get the part number for the wheels and go to local small engine parts dealer and get new. You can also do a search on the web for the wheels and maybe get them cheaper.
Good luck and let me know if this helps or you need any more help.
roundo4
SOURCE: my craftsman self propelled lawn mower no longer
if it is a belt driven drive check the belt for tension or break. or check the cable that engages the drive wheels.
SOURCE: craftsman self propelled walk behind lawn mower
Normally grass and debris are clogged under the belt/transmission cover, preventing the full engagement of the transmission cable/lever.
The cover is located on the topside, left front corner of the mower shell. Clean debris, try it again. If OK, re-install cover, If not, there is a cable adjustment (threaded portion with a nut on either side of a fastening arm) move the cable adjustment towards the rear, this will tighten the cable. Sometimes the cable assembly (includes the cable and the control box) needs to be replaced
I’m happy to assist further over the phone at https://www.6ya.com/expert/rolandw_c013176d62ee17ae
SOURCE: Engine runs at full throttle.
Well I would, suspect, that some sort, of drive or clutch mechanism, that isn't transferring the Drive, to the Propelling wheels. You need to troubleshoot, that, see if a belt, or chain, maybe has come off or broken? If it is all intact, but it goes through a gear train, well that maybe faulty, broken.
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