The old combined fuel tank and recoil starter have been separated into two separate units by the manufacturers due to leakage problems with theold fuel tank. I have purchased the new kit and the instructions require the fitting of a new recoil unit on top of the engine which is secured by a nut. when attempting to undo the nut the whole assembly rotates. How do I hold the assemly stationary whilst I undo the nut. I wonder if I can fix the blade under the mower by some means which should solve the problem.

Stuart B, June 2010