Tennant ATLV 4300, Service Manual, Page: 195 / 206

ENGINE--DIESEL
6-9 ATLV 4300 330495 (10--98)
FUEL LINES
Check the fuel lines every 50 hours of operation.
If the clamp band is loose, apply oil to the screw
of the band, and securely tighten the band.
Parts of the fuel line are made of rubber. The fuel
lines may become worn out whether the engine
has been used much or not. Replace the rubber
fuel lines and clamp bands every two years.
If the fuel lines and clamp bands are found worn
or damaged before two years’ time, replace or
repair them at once. Bleed the fuel system after
replacement of any of the fuel lines, see TO
PRIME THE FUEL SYSTEM. When the fuel lines
are not installed, plug both ends with clean cloth
or paper to prevent dirt from entering the lines.
Dirt in the lines can cause fuel injection pump
malfunction.
FUEL PUMP
Check the fuel pump every 100 hours of
operation.
Check the clamps and fuel lines that connect to
the fuel pump every 50 hours of operation.