Report "Hi, I have a Rover Pedigree push mower with 148cc Briggs & Stratton engine. Recently, a fairly severe oil leak has developed when it is run. As it is rather old (mid to late '70's), I thought I would further my mechanical knowledge and investigate replacement of what I expect is a perished gasket, or tightening of components that may have loosened over the last 30 years. I like my old mower and would like to see her back to good health. Knowledge of where to obtain a workshop manual would be greatly appreciated as it is an engine of some advanced years..... \r\nThanks for your assistance, Swifty"