BOSCH ROTAK 34 PROBLEM As soon as I pull the handle to start the mower, it just starts or tries to start for a split second and then cuts out. If you then try and start it again straight away it will not even try and start, but if you then leave it for a short period and try again it will repeat the process and try and start for a split second and cut out. Any help, much appreciated. I have checked for any breaks in cables and poor connections and can't find any. The mower is only 2 years old Thanks