If you want to accomplish fixes for your GAS GAS Halley 125 then it is always recommended to have access to a Workshop Manual to keep just for a reference in the event that you want to know ways to strip off a certain component much like the Door and match it again accurately.
GAS GAS Halley 125 Workshop Manuals can offer you identifiable diagnostic info with regards to your car or truck therefore if something is not working it helps you determine what the issue is and the way to resolve it. Then you are able to decide if this can be done yourself or in case the job is just too big you can book your Halley 125 in with a suitable friendly mechanic.
GAS GAS Halley 125 manual