Air Filter; Fuel Filter; Engine Oil Change - Ruggerini RY70 Usage Et Entretien

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• Air filter

- Oil bath air filter
Unscrew screw "A", figure 4, remove the lower container of the air filter, wash all
parts thoroughly with diesel (figure 13) and dry them with compressed air. Before
assembly fill the float chamber with engine oil up to the level mark (figure 4).
Do not exceed the level shown in the filter when adding oil. The extra oil
might be sucked by the engine thus causing a sudden increase in the
rotation speed.
Always use protective goggles when compressed air is used.
Never use solvents with a low flash point to clean the filter element. Such
action could cause an explosion.
- Dry-type air filter:
Open the cover (figure 5) and if necessary check the state of the filter every day
(figure 6). The cartridge must be changed in any event every 100 hours of work
(figure 7).
Make sure that the filter is mounted in the correct way otherwise dust and other
impurities could ilfiltrate into the intake ducts.
Clean the air filter frequently, as dust particles can wear the internal parts of the engine
(cylinder, piston, crankshaft, pivots, etc.) very quickly (in just a few operation hours). If
the working area is very dusty, change the oil in the filter every 4-5 working hours.
Choose filters which are adequate for the specific operating conditions.

• Fuel filter

Drain the fuel tank completely, slacken the screw ("A", figure 14), remove clamps (B,
figure 14), remove fuel filter ("C", figure 14), replace the fuel filter.
Original Ruggerini cartridges are recommended.
If the fuel supply circuit is empty, it is not necessary to purge the air as the engine is
supplied with an automatic air relief valve.
The breather pipe and the thread of the fuel tank cap should be checked regularly to
verify that they are free of impurities ("B", figure 8), particularly if the machine is
operated in a dusty environment.
Do not throw away spent cartridges, but hand them to specialised waste
disposal centres.

• Engine oil change

Run the engine for a few minutes at minimum and then stop it; remove the cap and
drain the oil (figure 15-16). Wash the internal oil filter with diesel fuel (figure 17-18),
refit the cap, pour in the oil (figure 19-20) and check the level as described on page
27.
Before restarting, make sure that the oil dipstick and the oil drain and fill plugs have
been correctly fitted back in place to prevent lubricant from spilling out. Original
Ruggerini cartridges are recommended.
CAUTION! Hot oil can cause serious burns.
Do not throw away spent oil and cartridges, but hand them to specialised
waste disposal centres.