How to replace latche on jonsered cs2250s for the hood?

SOURCE: Have a jonsered CS2250S chain-saw. Have

The CS2250s is the Husqvarna 450 in red and black, if you have a spark, and there is fresh fuel in the tank there is a number of other possible reasons why it will not start, before doing anything pull the muffler off ( it only takes a few minutes ) and check the condition of the piston through the exhaust port, any signs of scuffing or damage to the piston and the saw will need to come apart, if all looks ok replace the muffler, pull the pipe out of the fuel tank and check the condition of the fuel filter on the end of it, if it looks fairly black replace it, pull the choke out and press the fuel bulb as many times as it takes to fill the bubble, crank the engine, if it still does not fire remove the spark plug, check if it is wet with fuel, if it is completly soaked it may well be flooded, put the switch to off, crank the engine with the plug out, leave for twenty minutes and try to start, if the plug is dry then it could well be a blockage in the carb itself, this will be a shop repair, it is quite difficult to remove and re assemble this component.