While you wait for answers, we may have found some information which could help you.
Click here for Lawn Mower Engine BatteryRover Rancher 15hp Model18189. Ser No 184009?
hard to start B&S 37 egine fitted to Rover quickstart mower?
Rover hand mower?
How can I fix my lawn mower (Rover ES)?
How to replace pull start rope on old Rover mover?
change and tension drive belt on 1977 rover rancher 2 rideon?