A forklift should be inspected correctly and given a test run prior to buying it. This applies especially to trucks being bought on-line. It is essential to detect possible issues with trucks purchased from businesses on-line.
Starting the engine from cold is a great idea. Note whether there is excessive smoke and the ease with which the engine turns over. This is specifically vital with trucks that have IC engines.
Testing the performance of the truck in tough situations must be included in the test run. A qualified operator could operate the truck in forward and reverse, up the ramp.
You could inspect an IC engine truck yourself. On a clear part of floor, run the truck around for several minutes while a skilled driver tests the hydraulic functions. Then, look at the ground underneath for signs of fluid leakage. Even seemingly minor leaking can lead to serious problems that would be very pricey to repair later on.
The chains and masts must be checked by a trained person. Check with and without a load that the mast operates well. Watch for 'binding' or sticking of the mast. A warning sign is play in the mast channels or between the mast and fork carriage. Another is creeping down or creeping forward of the mast when loaded. These can be signs of problems with valve, seals or ram.
The mast might have been changed at some time if the truck is used. Make sure that the mast and any fitted attachments adhere to the rating plate on a truck. Make certain that the sideshift is not sticking when loaded.
Looking closely at the thickness of the heel for wear or damage should be included in the inspection. The truck's manufacturer specifies minimum thickness. A loose fit might mean the hanger points or carriage are worn. Watch for cracks on the arms at heels and mountings.