This is a rear wheel self propelled.when I engauge the drive it will take off but then it slows to a stop.
I don't think there IS an adjustment. That is what prompted me to construct a tensioner device to add just that little more tension needed. This was MY fix after trying a new belt and spring.
My Craftsman
mower lost the self propel feature. The small pulley on the top of the
transmission would slip under load, There was just not enough tension on
the belt to over come it. Tried a new belt and also replaced the
tensioner spring...still slipping when going uphill or with full bag.
Possible pulleys worn...not wanting to gamble more time and labor, I
bought a 4" 1/4" cap screw with extra nuts and flat washers, a 3"16
eye bolt as well. Drill a 1/4" hole in the bracket that holds the trans
activation cable in place and a 3/16" hole in the mower deck so the
holes are in alignment with each other. Put the cap screw through the
1/4" hole with the threads facing toward the front of the mower. Fasten
the eye bolt into the 3/16" hole in the mower deck locking it in place
with one nut on each side of the metal. Now you have the 1/4" bole
protruding through the eye bolt. Using a flat washer and nut, tighten
then nut easily and when there is room put a second nut on it. When you
have tightened it up to the desired belt tension lock the two nuts
together using two wrenches. Note...do NOT make the belt incredibly
tight or you will destroy the trans in a short time. Go a little at a
time till the drive does not slip under load. Good luck hope this helps.
Oh....you will have to trim the plastic cover that covers the
transmission so the added bolt will clear it and you can put the cover
back in it's proper place.
SOURCE: Toro 6.5 self propelled Mower - Self Propell won't engage
see if the lever going to the gearbox is cracked or broken. there is a gear inside the box that has a pin going thru the shaft that may have broken but usually it is external. these mowers have a plastic lever to put the transmission lever in gear if the cable is overtightened they wont hold up.if it cracks it leaves practially no tension on the engagment system
SOURCE: My self propelled mower doesn't fully engauge
What usually causes this is called belt stretch, this happens due the weather and the heat from the engine
SOURCE: Honda Harmony self propelled not propelling. Belt
Do you know for sure that the belt is not stretched. Make sure also that it is on the pulley correctly and the pulley is spinning with the shaft you also might have spun a key.
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