I have a chance to buy a honda model 100 4-stroke. Was told is a 9.9hp. Is that right. About what year or range of years would this be. Is this a good model or something to stay away from. Would someone want to give a range of values for something like this? I know that is a loaded question but some help please. Motor turns over and looks very clean. Was told it run fine 1 year age. Ant help would be great. Thanks