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Nanni N3.21 Instruction Manual

Nanni N3.21
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Inspection and adjustment of the levels
Bleeding the fuel system
The fuel system is self-priming but it needs to be manually
bled when the lter is changed, after it runs out of fuel or after
work on the system if it has run dry or it has been emptied.
Open the fuel valve
Place a container beneath the bleed screw A and loosen it.
Activate repeatedly the priming pump by pressing the lever
B until fuel with no air bubbles ows through the bleed
screw. If the fuel is not owing after few minutes, rotate the
crankshaft a quarter turn.
Tighten the bleed screw A
I Warning !: Avoid emptying all the fuel in the lter
during bleeding.
Replacing the fuel lter cartridge
This lter treats the water and impurities contained in the fuel
before it ows into the injection system.
Cut off fuel intake at the tank.
Place a container below the lter and then dispose of the
used lter cartridge C.
• Re t the new lter by attaching it securely to the engine.
Turn up the hoses on the lter by squeezing the clamps.
Loosen the bleed screw to bleed the air, open the fuel valve
again and bleed the system.
Start the engine and check that the assembly is properly
sealed
I Warning! : Used lters must be disposed of in containers
designed for this purpose.
Zinc anode
I Warning !: Perform this operation with the engine
stopped and cold.
A zinc anode forms part of the exhaust elbow . It serves as
an anticorrosion anode. The anode must be replaced when
more than 50% of it has been consumed.
Diameter : 10 mm
Length : 16 mm
A
C
B

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Nanni N3.21 Specifications

General IconGeneral
BrandNanni
ModelN3.21
CategoryEngine
LanguageEnglish

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