Nanni N4.40, Workshop Manual

Page: 27 / 175

GENERAL
03-M-E3B, 03-M-DI-E3B, 03-M-E3BG, WSM
G-12
[3] CHECK POINTS FOR EVERY 50 HOURS
Check of Fuel Hoses and Clamp Bands
CAUTION
• Stop the engine before you do the check below.
1. If the clamp (2) is loose, apply oil to the threads and tighten it
again correctly.
2. The fuel hose (1) material is rubber and deteriorates naturally.
Replace the fuel hose together with the clamp in a 2-years
interval.
3. But if the fuel hose and clamp has damages before 2 years, then
replace them.
4. After you replace the fuel hose and the clamp, bleed the fuel
system.
(When you bleed the fuel system)
1. Fill the tank with fuel.
2. Open the fuel cock (4). (
[B] only)
3. Loosen the air vent plug (3) of the fuel filter by a few turns.
4. Tighten the plug when the bubbles do not come up.
5. Open the air vent cock (5) on top of the fuel injection pump.
6.
Engine with the electrical fuel feed pump
Turn the key to the AC position and supply the fuel with the
pump for 10 to 15 seconds.
Engine with the mechanical fuel feed pump
Set the stop lever on STOP position and crank the engine with
the starter for 10 to 15 seconds.
7. Close the air vent cock correctly after you bled the air.
NOTE
• Always keep the air vent cock on the fuel injection pump
closed unless when you release the air. If not, it can cause
the engine to stop.
M00000003GEG0012US1
(1) Fuel Hose
(2) Clamp
(3) Air Vent Plug
(4) Fuel Cock
(5) Air Vent Cock [A] Cartridge Type
[B] Element Type
KiSC issued 06, 2009 A