Since it is a used unit the causation can be more troublesome . You have pretty well checked , cleaned or replaced the normal areas of concern . The ignition switch may be faulty as you have indicated which can be bypassed . Secondarily and more likely is that your coil is heating up and breaking down . They are inexpensive on eBay . I would also advise since it is used to ensure your fuel filter and air filter and gas cap vent are clean and check the cylinder and headbolts are tight roy- bilt and ryobi have fastener issues Good luck Bud !

Some roses are really good at staying in a two-dimensional space - even really vigorous ones such as Mermaid and New Dawn....but MAC is, in my experience, not really one of them. It is quite wilful and will throw canes from various points and directions.But, as has been mentioned, secateurs are never far from my holster in the vicinity of MAC and even during midsummer, it is perfectly OK to be ruthless, chopping wayward canes with alacrity if they fail to stay in bounds - my son does his 3 times across the year to prevent his entire tiny front garden being overtaken. As for placing canes - well, they will grow as they grow and initially at least, the canes do have some flexion - not as much as a wichurana but still bendable so get them as low as you can and don't worry too much about placing them too closely - although with MAC, I rely more on having different lengths of canes, rather than training and bending, keeping some really quite short in order to alleviate bare legs....but that would be a bit messy on a trellis. They will, incidentally, bloom pretty much everywhere - none of that only on old wood anxiety, common to many climbers and ramblers - which is just as well, given the amount of pruning it gets. Basically, Susan, you can afford to experiment - nothing much dismays MAC and if you are unhappy, you can prune it to the ground and start over - it is vigorous and forgiving.

Posted by ravencajun "so if you change a name make absolutely certain you are NOT removing the file extension" That's kinda what I suspect. Do you have file extensions set to be shown? Not shown? With extensions shown you'll see a dot in almost all of your file names The extension is the part after the dot(last dot if there's more than one), When you rename the file, you need to not change the part after the last dot. Unfortunately, with extensions shown, it would also be easy to right-click-->rename-->type in a new name, hit "Enter", and wipe out the file extension... causing Windows to throw a warning, which if ignored would cause Windows to no longer know how to open the file. If you have extensions hidden(as Windows comes), it seems unlikely that you would accidentally change/remove the file extension. The extension isn't shown nor highlighted when renaming the file, so couldn't be accidentally changed. Is this possibly the warning you're getting? I don't really know, just throwing it out there... just in case. I agree though, that it would help to have more info. such as file name and especially the file extension. BTW, I always set Windows to show me extensions. Nothing wrong with that, just gotta make sure not to change the extension when renaming. :)

Good idea. It's easier to see when the computer is either off or in sleep mode and the screen is black. Have a light shine on it and then view from an angle. If there are any spots that don't wipe off, contact Apple.