Qn. Have the squares on your handles rounded off and the locking bolts will not tighten. If so then replacing with these handles will solve your problem.
GTech CLM021 Lawnmower - Grass box flap
GTech CLM021 Lawnmower - Lower Handles
Genuine Gtech Cordless LawnMower CLM021 & CLM50 & SLM50 - Safety key and switch
Gtech Cordless Lawnmower CLM021 - starting bar
