Hi jezza, that trimmer is one I haven't seen, and at this point I haven't found any other brand it is sold under. I notice that it is a full-crank design of 20 cc, and the L20 version seems to be straight shaft.
Please post pictures of the trimmer, showing the engine and the ignition switch in particular. Since you believe you have an ignition problem, we can start with that. Remove the spark plug, then re-attach the plug lead and hold the metal body of the plug in contact with a metal part of the engine. With the ignition switched on, pull the starter cord while watching the gap between the electrodes to see if you get an even stream of blue sparks.
