Itm ITM 800, Инструкция по эксплуатации, Страница: 74 / 118

Maintenance and adjustment 68
4
Fuel filters (Fig. 22)
Change the fuel filters every 500
hours.
Fig. 22:
1
3
2
1. Clean the outside of the filter assem-
bly.
3. Drain the filters by unscrewing the tap
(1).
4. Turn the filter element (3) with strap
wrench and remove filter element.
5. Remove the element and discard it.
6. Clean the inside of the filter head (3
Fig. 22).
7. Renew the seals and reassemble with
new filter element.
8. Remove the air from the system.
Removing air from the system
(Figs. 23 to 25)
If at any time air enters the fuel sys-
tem, either due to fuel system servicing,
or running out of fuel, the following pro-
cedure must be used:
1. Loosen the thermostart fuel pipe nut
(Fig. 23).
Fig. 23:
2. Operate the priming lever on the fuel
lift pump (Fig. 24) until fuel, free from
air, comes from the fuel pipe connec-
tion. Tighten the thermostart fuel pipe
nut.
Note
If the drive cam of the fuel lift pump
is at the point of maximum lift, it will
not be possible to operate the priming
lever. In this situation, the crankshaft
must be turned one revolution.
Fig. 24:
3. Loosen the vent plug (1 and 2 Fig. 25)
on the fuel injection pump and operate
the priming lever of the lift pump un-
til fuel, free from air, comes from the
vent screws. Tighten the vent screws.