Maintenance and repair instructions (continued) – Ryobi 990r User Manual

Page 19

NOTE:

CLEAN AND RE-OIL THE AIR FILTER
EVERY 10 HOURS OF OPERATION.
Your unit’s air filter is one of the most
important areas to maintain. If it is not
maintained, you will void the warranty.
Before cleaning, make sure the unit is
turned off.

1. Remove the three (3) screws on the carburetor/air

filter cover assembly. Remove the air filter cover
(Fig. 35).

NOTE: The choke lever should be in the

"PARTIAL" position to remove and
install the air filter cover.

AIR FILTER MAINTENANCE

2. Remove the air filter (Fig. 36).

5. Squeeze the filter to spread the oil (Fig. 39).

MAINTENANCE AND REPAIR INSTRUCTIONS (Continued)

3. Wash the filter in detergent and water (Fig. 37). Rinse

the filter thoroughly and allow it to dry.

4. Apply enough clean SAE 30 oil to saturate the filter

(Fig. 38).

Fig. 38

Fig. 39

Fig. 37

Fig. 36

6. Reinstall the filter (see Fig. 36), air filter cover and

screws (see Fig. 35). Torque the screws to 2.8-3.4
N•m (25-30 in•lb).

NOTE: If the unit is operated without the air

filter cover installed, you will void
the warranty.

Air Filter

Choke Lever

Screws

Screw

Fig. 35