Craftsman 536.270290 Manual Del Operador página 22

MAINTENANCE
ENGINE
HOW TO CHANGE THE OIL
HOW TO CHECK THE OIL
NOTE: Do not check the level of the oil while the engine runs.
1. Make sure the unit is level.
2. Clean the area around the dipstick (Figure 17). Remove the
dipstick, Wipe the oil from the dipstick,
3. Insert the dipstick into the oil fill tube. Turn the dipstick clock-
wise until it is tight. Remove the dipstick, Check the oil level on
the dipstick. The oil level must reach the FULL mark on the
dipstick.
4. If necessary, add oil until the oil reaches the FULL mark on the
dipstick, The quantity of oil needed from ADD to FULL is
shown on the dipstick. Do not add too much oil.
Air Screen
Dipstick
Engine Shroud
Figure 17
/
Oil Drain Cap
NOTE: Do not drain the oil from a cold engine. Before you drain
the oil, let the engine run for several minutes. Make sure you do
not get oil on the belts.
1. Remove the oil drain cap. Drain the oil completely from the
engine. Install and tighten the oil drain cap.
Only use a high quality detergent oil rated with API service
classification SF or SG. Select the oil's SAE viscosity grade
according to the expected operating temperature using the
temperature chart below:
Required SAE viscosity grades
4
F 20 0 20 32 40 60 80 100
I , I I I I I I
c 30 20 1_ _ 1_ _0 3'0 40
TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
NOTE: Although multi-viscosity oils (5W30, 10W30, etc.)
improve starting in cold weather, they will result in increased
oil consumption when used above 320 F. Check the engine oil
level more frequently to avoid possible engine damage from
running low on oil.
Clean the area around the dipstick. Remove the dipstick.
Slowly pour approximately 48 ounces (3 pints) of oil into the oil
extension tube.
insert the dipstick into the oil extension tube. Turn the dipstick
in a clockwise direction until it is tight. Remove the dipstick.
Check the oil level on the dipstick. The oil level must reach the
FULL mark on the dipstick.
HOW TO CLEAN THE COOLING SYSTEM
The engine is air cooled. The air that cools the engine enters through 1.
the air screen on top of the engine. Clean the engine every 100
hours or every year as follows. 2.
Remove any grass, dirt or debris from the air screen with a
cloth or brush.
Inspect the edge of the engine shroud for grass or debris.
Remove any grass or debris visible at the bottom edge of the
engine shroud,
HOW TO CHECK THE MUFFLER
Check the muffler every 50 hours. Make sure the muffler is correctly
mounted and is not loose. If the muffler is worn or burnt, replace with
a new muffler. A worn muffler is a fire hazard and can damage the
engine.
F-040607L 22
If you mount a spark arrester to the muffler, also check the spark
arrester when you check the muffler. If the spark arrester is worn or
damaged, replace it with a new spark arrester purchased from a
Sears Service Center.