Craftsman 247.887791 Operator's Manual page 17

f
Usedoil is a hazardouswasteproduct.Disposeof usedoil properly.
Donotdiscardwith householdwaste.Checkwith yourlocalauthori-
ties or SearsServiceCenterfor safedisposal/recycling facilities.
.
6.
Reinstallthe drain plugand tightenit securely.
Refillwith the recommended oil and checkthe oil level.See
Recommended Oil Usagechart.Theengine'soil capacityis 20
ounces.
i i
(%-400 -200 0o 200 400
("c)
-30° -20° -10° 0°
Oil Drain
Plug
Figure12
.J
DO NOTuse non-detergent o il or 2-strokeengineoil. It could shorten
the engine'sservicelife.
7. Reinstallthe oil fillercap/dipsticksecurely.
Thoroughlywashyour handswith soapand water as soonas
possibleafter handling usedoil.
Checking Spark Plug
DO NOTcheckfor sparkwith spark plug removed.DO NOTcrank
enginewith sparkplug removed.
If the engine hasbeen running,the mufflerwill be very hot. Be careful
notto touch the muffler.
NOTE: Checkthe sparkplug oncea seasonor every 25 hoursof
operation.Changethe sparkplug oncea seasonor every 100hours.
Toensureproperengine operation,the sparkplug mustbe properly
gappedand freeof deposits.
1. Removethespark plug bootand use a sparkplug wrenchto
removethe plug.See Figure13.
2. Visuallyinspectthe spark plug.Discardthe spark plug if thereis
apparentwear,or if the insulatoris crackedor chipped.Cleanthe
sparkplug with a wirebrush if it is to be reused.
3. Measurethe plug gap with a feelergauge.Correctas necessary
by bendingsideelectrode.See Figure14.The gap shouldbe set
to .02-.03inches(0.60-0.80ram).
4. Checkthatthe sparkplug washeris in good conditionand thread
the sparkplug in by handto preventcross-threading.
5. After thespark plug is seated,tightenwith a spark plugwrenchto
compressthe washer.
SparkPlug
Spark Plug Boot
Figure13
Electrode
___,. ,___ .02-.03 in.
(0.60-0.80 ram)
Figure14
17