Your drive belt that turns the self propelled unit is worn or stretched and not turning the gears. or the gears themselves are worn down causing them not to engage. check your belt first that is most likely your problem. hope this helps
SOURCE: need drive belt for old yard king 21" self-propelled mower
most small engine repair or equipment repair shops can cross reference or get a replacement also most online parts stores can get replacement
350 views
Usually answered in minutes!
×