If at any time a powered industrial truck is found to be in need of repair, defective, or in any way unsafe, the truck shall be taken out of service until it has been restored to safe operating condition.
Fuel tanks shall not be filled while the engine is running. Spillage shall be avoided.
Spillage of oil or fuel shall be carefully washed away or completely evaporated and the fuel tank cap replaced before restarting engine.
No truck shall be operated with a leak in the fuel system until the leak has been corrected.
Open flames shall not be used for checking electrolyte level in storage batteries or gasoline level in fuel tanks.