Yep after grinding off 4 bolts undoing 4 more I got to see what was happening with the drive belt for cutting blades.
Well it looks like the mount holes for the Honda motor are the same as B&S motor but the shaft on B&S motor is closer to the front of the frame than the Honda thus I get a loose belt.
Cannot move B&S motor back as it is about 1/4 inch from firewall not enough to take up slack.
The belt is the small one with what looks like teeth on inside of belt the belt runs from top of double pulley from motor to another double pulley near front of frame (top) with an tension idiler that you push forward to pull up the slack and make the pulley turn which in turn makes the belt on bottom of pulley turn main belt to drive blades. you cannot see it until you remove front wheel assembly.(which is a great pain)
going to either attach an fixed idiler pulley or if I can find an link belt(ajustable type.Going to check out link belt on net after this post.tried to get pic's but came out not too clear.
ps dealer is good gives me discount but I don't feel they really know about some stuff.

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Last edited by Chrisp9; 04/10/11 10:07 AM.