Prior to purchasing a forklift truck, you should make sure that it is well checked and given a test run. This applies especially to trucks being bought on line. It is very vital to detect potential issues with trucks purchased from companies on the Internet.
Starting the engine from cold is a great idea. Note whether there is too much smoke and the ease with which the engine turns over. This is especially crucial with IC engine trucks.
The test run should include an inspection of the truck's performance in tough situations. An operator who is trained could drive the truck in forward and reverse, up the ramp.
You can check an IC engine truck yourself. On a clear area of floor, run the truck around for a few minutes while a trained operator tests the hydraulic functions. Afterward, look at the ground beneath for indications of fluid leakage. Even seemingly minor leaking can indicate serious issues which will be really costly to fix later on.
A qualified person should inspect the masts and chains. Check with and without a load that the mast operates smoothly. Watch for 'binding' or sticking of the mast. A warning indication is play in the mast channels or between the mast and fork carriage. One more is creeping down or creeping forward of the mast when loaded. These can be signs of problems with valve, seals or ram.
The mast may 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 sure 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 manufacturer of the truck specifies minimum thickness. A loose fit can mean the carriage or hanger points are worn. Look for cracks on the arms at heels and mountings.