ATV 4 wheeler mechanic needed
How old, Decent shape? If it ran good 6 years ago I would do a few things myself. I would start with a new spark plug, drain all fuel, get fresh. Make sure there are no mouse nests in the air intake, and anywhere else.
With fresh gas and plug I would have some 'starter fluid' handy, give a squirt into the intake and pull. If a battery is involved you could get one yourself. These items would cost little. After that if no-go, then consider the shop options.