Jinma is a Chinese company that produces farm equipment for international distribution. Jinma tractors are considered durable and long lasting and are also sold under the brand name JM. Jinma tractors are cheaper than domestic varieties --- fully assembled models are available for under $6,000 as of September 2010 --- but finding a technician that can service the tractor is difficult since the manufacturers do not have headquarters in the U.S.
Fluid leaks are common on Jinma tractors. Typically these leaks are minor cracks in the fuel or oil tank. If the leaks are small enough, you can repair them with a liquid filler or patch them with an epoxy. Fluid leaks are a problem that Jinma is aware of, and the company plans to rectify it with future models.
Jinma tractors have hard plastic seats that are not ideal for long days at the wheel. Jinma does offer a soft seat cover separately from its factory headquarters in China. If you spend a lot of time on your tractor, the extra cost is worth the comfort.
Jinma tractors have turf tires, which are useful for driving over lawns because they don't leave large divots. However, for driving over muddy terrain these tires tend to get clogged with debris easily and lose traction, which is dangerous. Invest in some standard AG tires from a separate retailer, and outfit your Jinma with tires that are appropriate for your work.
Many Jinma dealers in the U.S. are ill equipped to satisfactorily inspect a Jinma tractor, according to John's Tractor. If you are mechanically inclined, you can perform the inspection yourself. If you're not, review the credentials of the person selling you the tractor. Ask her if she has sold many Jinma models in the past. Large dealers and distributors are generally more reliable, though a small expert dealer can provide more personal attention.