saltdawg Thank you for your responses. Toro now owns Lawnboy so part numbers are the same, so yes the part does fit more than one mower. I agree it appears the Lawnboy does not have a key. The only thing I can think of is that the shaft on the engine may have a slight taper to it and when the spacer that goes inside the blade adapter (driver) exerts pressure on the adapter to keep it in place without slipping. I can't tell if the shaft is tapered since I don't have the mower at my house. I'll have a clearer picture when the new parts arrive that I ordered since the old blade adapter is pretty messed up. BTW the blade adapter on the unit does have the cutout for the keyway unlike the one on Ebay that showed it was welded closed. I ordered one with the keyway cutout present. Hopefully someone owning a Lawnboy 10685 can advise why the shaft keyway must align with the blade adpater (driver) when there is no key.

As far as decals, only O.E. decals from Toro/Lawn-Boy are available and what is not already obsolete is hit or miss. Go to www.Lawn-Boy.com look up you particular mower model # and find the part numbers of the decals you need. Then go to ... http://www.rcpw.com/Oem_Parts.htm ... to see if your decals are still available. I usually buy from my local dealer because shipping rates are much higher than sales tax, but rcpw or any other online parts house can at least tell you if it is still available and current price. Doug

Thanks...I am not sure what LB is thinking...the parts link on the front web page titles "find a part number" brings you to something totally useless. I found the one you linked. Thanks.

I'm interested in a D600 Engine for this neverending IH restoration. Oh, and if there happened to be IH/LB parts in there of course I'd be interested.