Craftsman 247.116830 Operator's Manual page 13

2. Place a suitable oil collection container under the oil drain plug.
3. Remove the oil drain plug. See Figure 11.
Oil Drain Plug
4. Tip the snow thrower back to drain oil into the container. Used oil must be
disposed of at a proper collection center.
5. Reinstall the drain plug and tighten it securely.
6. Refill with the recommended oil and check the oil level; refer to Checking
and Adding Oil in the Assembly Section.
7. Reinstall the oil filler cap/dipstick securely.
Spark Plug
DO NOT check for a spark with the spark plug removed. DO NOT crank the
engine with the spark plug removed.
If the engine has been running, the muffler will be very hot. Be careful not
to touch the muffler.
The spark plug should be checked every 25 hours and changed once a season or
every 100 hours. To ensure proper engine operation, the spark plug must also be
properly gapped and free of deposits.
SERVICE AND MAINTENANCE
Figure 11
WARNING
WARNING
1. Remove the spark plug boot and use a spark plug wrench to remove the
plug. See Figure 12.
2. Visually inspect the spark plug. Discard the spark plug if there is any
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: A resistor spark plug must be used for replacement. Contact a Sears
Parts and Repair Center for a replacement spark plug (Part # 951-10292).
3. Measure the plug gap with a feeler gauge. Correct as necessary by bending
the side electrode. See Figure 13. The gap should be set to .02-.03 inches
(0.60-0.80 mm).
Electrode
.02-.03 in.
(0.60-0.80 mm)
4. Check that the spark plug washer is in good condition and thread the spark
plug in by hand to prevent cross-threading.
13
Spark Plug
Spark Plug Boot
Figure 12
Figure 13