A forklift must be checked correctly and given a test run before purchasing it. This applies particularly to trucks being obtained on-line. It is very important to find possible issues with trucks bought from companies online.
Be certain to start the engine from cold, and note the ease with which the engine turns over and whether there is too much smoke. This is specifically vital with IC engine trucks.
Testing the performance of the truck in challenging situations should be included in the test run. A driver who is trained can maneuver the truck in reverse and forward, up the ramp.
You could perform your own inspection of an IC engine truck. On a clear area of floor, run the truck around for several minutes while a skilled operator tests the hydraulic functions. After that, examine the ground underneath for indications of fluid leakage. Even seemingly insignificant leaking could result in serious issues which will be very expensive to repair later on.
A trained person must inspect the chains and masts. Check with and without a load that the mast works well. Watch for sticking or 'binding' of the mast. A warning sign is play in the mast channels or between the fork carriage and mast. Another is creeping down or creeping forward of the mast when loaded. These can be signs of issues with valve, seals or ram.
If the truck is not new, the mast may have been changed at some time. Make sure that the mast and any fitted attachments follow the rating plate on a truck. Make sure that the sideshift is not sticking when loaded.
Looking closely at the thickness of the heel for damage or wear must be included in the inspection. The truck's manufacturer specifies minimum thickness. A loose fit could mean the carriage or hanger points are worn. Watch for cracks on the arms at heels and mountings.