Hi rdl75672 I looked at the hardware you ordered and it looks wrong. If you do a search on the make and model ON HERE, the parts diagram should show the proper part number for the screws. The screws you ordered look like too coarse of a thread to thread into the engine housing. The screws should be FINE THREAD machine screws..but the length of the ones you ordered is about right. Check your model again on here and see.