Craftsman PRO Series Operator's Manual page 19

Oil Drain
Plug
4. Tip engine to drain oil into the container. Used oil must be disposed of at a
proper collection center.
Used oil is a hazardous waste product. Dispose of used oil properly. Do not
discard with household waste. Check with your local authorities or Sears
Service Center for safe disposal/recycling facilities.
5. Reinstall the drain plug and tighten it securely.
6. Refill with the recommended oil and check the oil level. See Recommended
Oil Usage chart. The engine's oil capacity is 37 ounces.
DO NOT use non-detergent oil or 2-stroke engine oil. It could shorten the
engine's service life.
-40º -20º
-30º -20º -10º 0º
7. Reinstall the oil filler cap/dipstick securely.
Thoroughly wash your hands with soap and water as soon as possible after
handling used oil.
Checking Spark Plug
DO NOT check for spark with spark plug removed. DO NOT crank engine with
spark plug removed.
SERVICE AND MAINTENANCE
Figure 18
CAUTION
CAUTION
Synthetic
0W-30
5W-30
0º 20º 40º
CAUTION
WARNING
If the engine has been running, the muffler will be very hot. Be careful not
to touch the muffler.
NOTE: Check the spark plug once a season or every 25 hours of operation. Change
the spark plug once a season or every 100 hours.
To ensure proper engine operation, the spark plug must be properly gapped and
free of deposits.
1. Remove the spark plug boot and use a spark plug wrench to remove the
plug. See Figure 19.
2. Visually inspect the spark plug. Discard the spark plug if there is apparent
wear, or if the insulator is cracked or chipped. Clean the spark plug with a
wire brush if it is to be reused.
NOTE: An F6RTC spark plug must be used for replacement. For Sears
purchase, visit a Sears Parts & Repair Center or call 1-888-331-4569. Ask for
replacement spark plug 951-10292.
3. Measure the plug gap with a feeler gauge. Correct as necessary by bending
side electrode. See Figure 20. The gap should be set to 0.020-0.030 inches
(0.60-0.80 mm).
Electrode
0.020-0.030 in.
(0.60-0.80 mm)
19
WARNING
Spark Plug
Spark Plug Boot
Figure 19
Figure 20