© STIHL Inc., Virginia Beach, VA 2013 US/STR
confidential
19. Fuel Tank
If the tank is empty look down in the tank to see if it appears
contaminated with debris or anything else that shouldn’t be
there
If the unit has fuel in it carefully remove the cap and wave your
hand over the opening while smelling for a sour odor that may
indicate old stale fuel
© STIHL Inc., Virginia Beach, VA 2013 US/STR
confidential
19. Fuel Tank
If fuel is present carefully pour the fuel out in a pan and see if
there is trash or debris, or any evidence of other contaminants
such as water in the fuel
This sample is
contaminated with
water and debris
Dispose of fuel properly