- 24
PD 50 YS
GB
GB
3
2
1
4
5
6.7 B
ATTERY
CHECK
The battery only needs to be checked periodically for electrolyte
level and, if necessary, topped up with distilled water.
Normally, the acid level must be within the level lines shown
on the battery body.
When the MIN level is reached, top up the cells with distilled
water, taking care not to exceed the MAX level indicated on
the battery case.
The batteries develop a highly explosive gas. It is
recommended not to smoke nor cause sparks in the
vicinity, in particular during charging.
Wear protective goggles. When dismantling the battery,
disconnect the negative cable (-) first.
When remounting it, connect the positive cable (+) first.
6.8 S
UCTION
GRID
AND
VENT
CLEANING
Always check cleanliness of the air suction grids and vents.
These must be free of elements which obstruct regular cooling
air flow (leaves, paper, cloths, etc.).
Do not let the skin come into contact with the fuel.
During maintenance operations wear protective gloves
and glasses.
In the event of accidental contact with fuel, thoroughly
and immediately wash the affected part with soap and
water.
When the operation has been completed, thoroughly
clean off any traces of fuel and dispose of the used
cloths at special Collection Centres
6.4.1 S
YSTEM
BLEEDING
The presence of air bubbles in the fuel system is caused
by irregular functioning of the engine or the incapacity to
reach the nominal number of revolutions. Air might enter
the fuel circuit through a not perfectly tight seal (pipes,
filters, tank) or when the fuel in the tank is at minimum
level. To remove the air bubbles from the fuel circuit, is
necessary, first of all, to remove the cause which has
allowed air to enter the circuit..
Operate manually by carrying out the following operations
with the engine off:
1 Loosen the bleed screw (ref.5)
2 Make flow out the fuel into a container until all the air
bubbles contained in the filter have escaped from the
bleed screw.
3 Retighten the bleed screw and start the engine.
6.5 A
IR
FILTER
CLEANING
/
REPLACEMENT
For proper functioning and a long life of the engine it is
important to periodically clean and replace the air filter. An
inefficient filter may cause loss of engine power and
excessive smoke at the exhaust.
To replace the air filter, carry out the following operations:
- Remove the cover (ref. 1) from the filter holder by
unscrewing the butterfly screw (ref.2)
- Clean the filter (rif.3) and, if necessary, replace it;
- Fix the new filter.
- Remount the cover (ref.1) and fix it with the external
butterfly screw (ref.2).
During the cleaning operation, pay attention to the following:
- never beat the cartridge to remove the dirt, but use dry
compressed air, from the inside to the outside, at a MAX
pressure of 2 bar;
- light up the inside of the cartridge to check its state and
if there are any splits or holes, replace it.
On average replace the filter cartridge every 3 cleaning
operations.
