mikeb89gt
New member
OK I'm starting to think that upgrading to the bigger engine was a big mistake. I got the 40 series drive and driven units today. FIrst off I had to loosen all of the engine mount bolts to get the drive unit on. Once I got it on it seems like the shaft on the engine is too short? Is anyone else running a 11 or 13 hp HF engine with a 40 series? Can you show me a picture of what it looks like? What size bolt did you use?