Re: 18HP saga continues. Can’t get past 14mph and 3,900 RPM. Home › Forum › Ask A Member › 18HP saga continues. Can’t get past 14mph and 3,900 RPM. › Re: 18HP saga continues. Can’t get past 14mph and 3,900 RPM. stephenspann27Replies: 86Topics: 2 October 14, 2017 at 4:11 am #66173 Looks like the bearings have always been caged.