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MAINTENANCE
(Continued)
(_)
AIR CLEANER:
IMPORTANT: NEVER RUN ENGINE WITHOUT COMPLETE AIR
CLEANER INSTALLED ON ENGINE.
A. TO SERVICE FILTER(S) (see Figure 3):
1. FOAM FILTER:
Clean and re-oilevery three (3) monthsor every 25 operating
hours. Clean and re-oil daily if used in extremely dusty
conditions.
a.
Wash in water and detergent solution and squeeze
(don't twist) until all dirt is removed.
b.
Rinse thoroughly in clear water.
c.
Wrap in a clean cloth and squeeze (don't twist) until
completely dry.
d.
Saturate with engine oil and squeeze (don't twist) to
distributeoil and remove excess oil.
2. PAPER OR FOAM/SCREEN RLTERS:
DO NOT A'rFEMPT TO CLEAN OR OIL FILTER.
Replace once a year or every 100 operating hours, more
often if used in extremely dusty conditions.
Replacement filters are available at any nearby Sears
Rcebuck_and Co. (or Seam Canada, Inc.)_ervice Center.
B. TO REMOVE AND INSTALL FILTER(S):
1. Remova wing nuts and cover.
2. Slide FILTER A Off.l_it.TF?l_l
B.
3. Inspect tilter(s) fordiscoloration
or dirt accumulation. If either
is present, service per preceding "TO SERVICE FILTER(S)"
instructions.
4. Remove nuts and FILTER B. Discard FILTER B and nuts (if
service is necessary).
5. Clean inside of cover and body thoroughly.
6. Install new FILTER B and new nuts. Tighten nuts fingertight
and then turn one (1) more complete turn.
7. Slide foam filter over paper tilter.
8. Install cover and wing nuts. Tighten wing nuts.
COVER
\
WING NUTS
FILTER B
.RLTER A
6
J
Figure 3
MAINTENANCE
(ConUnued)
(_
SPARK
PLUG (see Figure 4):
This spark ignition system meets all requirements of the
Canadian Interference-Causing EquipmentRegulations. This
engine complies with all current Australian and New Zealand
limitations regardingelectromagneticinterference.Checkspark
plug yeady or every 100 operating hours.
A. Clean area around spark plug.
S. Remove and inspect spark plug.
C. Replace spark plugif electrodes are pitted,bumed or porcelain
is cracked. For replacement use Champion RJ-19LM or
equivalent.
NOTE: A resistorspark plug must be used for replacemonL
D. Check electrode gapwith wire feeler gauge andset gapat .030
if necessary.
E. Install spark plug, tighten securely.
ELECTRODES
:
.030 GAP
Figure 4
_)
ALTERNATOR
AND BATTERY
(ifso equipped):
/L ALTERNATOR:
For electrical problems such 8s inoperative starter or
dischargedbattery, see your nearbySears Roebuck and Ca.
(or Sears Canada, Inc.) Service Center for fuse replacement
(if so equipped), maintenance and repairs.
B. BATTERY:
1. Whan earvicin9 battery, always connect cablssto battery
exactly as they were before removal (ground cable to
batterynegative [- or neg.] post). If incorrecgyconnected,
alternator won't charge battery. If thishappens, see your
Sears Roebuck and Co. (or Sears Canada, Inc.) Sewise
Center.
2. Never expose engine ignitionsystem to battery power. If
battery cable or any live wire contacts ignition system
groundwire, engine ignition system may be damaged.
3. If external battery charger is used, disconnectpositive(+
or pos.) cable from battery to prevent possibledamage.
4. See battery manufacturer's instructions for service end
storage.
I_)
COOLING
SYSTEM;
IMPORTANT: Frequently remove any grass clippings, dirt and
debris from coolingfins, air intake screen and levers and linkage
(see Figures 1 and 5), This will helpensure adequate coolingand
correct engine speed.
AIR INTAKESCREEN
Figure 5
(_
CHECK ENGINE AND EQUIPMENT OFTEN FOR LOOSE NUTSJ
_lL
BOLTS AND ATTACHMENTS
AND KEEP THESE ITEMS_
TIGHTENED.
/
Page3
t81-1192-11
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