I apologise if i may have inadvertantly misled you re the Honda engines! i was speaking generally and not specifically for your quad. Basically what i meant was that you will find most chinese or eastern import quads are copies of most popular brands, so replacing parts can be quite easy.
Find out what make the engine is and then search ebay for something that looks similar, then you will know what to look out for regarding spares.
If it is a no sparker, its quite likely to be the coil or ignitor. these are also pretty generic parts so finding replacements should be a doddle. I may even still have some in stock at my lockup.
I hope i have made this a bit clearer and not confused you.
Don't worry, Marks easily confused!!