Troy-Bilt TB490BC - Manual (Page 20)

20
MAINTENANCE AND REPAIR INSTRUCTIONS
CHANGING THE OIL
For a new engine, change the oil after the first 10 hours of
operation. Change the oil while the engine is still warm. The
oil will flow freely and carry away more impurities.
1. Unplug spark plug boot to prevent accidental starting.
2. Remove the oil fill plug/dipstick.
3. Pour the oil out of the oil fill hole and into a container
by tipping the unit to a vertical position (Fig. 42).
Allow ample time for complete drainage.
Fig. 42
6. Replace the oil fill plug/dipstick.
7. Reconnect the spark plug boot.
4. Wipe up any oil residue on the unit and clean up any
oil that may have spilled. Dispose of the oil
according to Federal, State and local regulations.
5. Refill the crankcase with 3.0 fluid ounce (90 ml) of
SAE 30 SF, SG, SH oil.
NOTE: Use the bottle and spout saved from initial use to
measure the correct amount of oil. The top of the
label on the bottle measures approximately 3.0 fl
oz (90 ml) (Fig. 43). Check the level with the
dipstick. If the level is low, add a small amount of
oil and recheck. Do not overfill (Fig. 43).
Fill Level
Fig. 43
Wear gloves to
prevent injury when
handling the unit.
CAUTION:
AIR FILTER MAINTENANCE
Cleaning the Air Filter
Clean and re-oil the air filter every 10 hours of operation.
It is an important item to maintain. Failure to maintain
your air filter properly can result in poor performance or
can cause permanent damage to your engine.
1. Open the air filter cover. Push the tab on the right
side of the cover inward. Then pull the air filter cover
out and to the left (Fig. 44).
NOTE: It may be necessary to remove the fuel cap to
completely remove the air filter cover.
2. Remove the air filter (Fig. 44).
Air Filter
Air Filter Cover
Tab
Fig. 44
To avoid serious
personal injury,
always turn the unit off and allow it to cool
before you clean or service it.
WARNING: