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Nanni N3.21 Instruction Manual

Nanni N3.21
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Inspection and adjustment of the levels
6
Alternator belt
I Warning !: Perform this operation with the engine
stopped.
A. Alternator
B. Alternator belt
Regularly check the tensions of the alternator belt. Tension
the belt between the pulleys in accordance with the tension
or de ection given in the technical characteristics using a
DENSO meter.
Inspect drive belt : Visually check the belt for excessive
wear, frayed cords, etc. If any defect has been found, replace
the drive belt. If the belt has chunks missing from the ribs, it
should be replaced.
Check that it ts properly in the ribbed grooves. Check with
your hand to con rm that the belt has not slipped out of the
groove on the bottom of the pulley.
Seawater pump
I Warning !: Close the seawater intake valve as there is
a risk of water penetrating into the engine.
A. Seawater pump
B. Impeller
C. Gasket
Close the seawater intake valve
Close the seawater pump cover
Using a channel lock pliers, remove the worn Impeller
If the rotor shows any signs of cracks or defects, it should
be replaced
Clean the parts preserved
Fit a new rotor by applying a clockwise rotary movement
Install the seawater pump cover using a new seal
Open the seawater intake valve
Start-up the engine and check for any leaks in the circuit
B
A
B
C
A

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Nanni N3.21 Specifications

General IconGeneral
BrandNanni
ModelN3.21
CategoryEngine
LanguageEnglish

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