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MAINTENANCE
(Continued)
(_)
AIR CLEANER:
IMPORTANT:
NEVER RUN ENGINE WlTHOUTCOMPLETE
AIR CLEANER
INSTALLED ON ENGINE.
A. TO SERVICE FILTER(S) (see Figure 3):
1. FOAM FILTER:
Clean and re-oil every three (3) months or 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 aclean clothand squeeze (don't twist) untilcompletely dry.
d. Saturata with engine oil and squeeze (don't twist) to distdbuta oil
and remove excess oil.
2. PAPER OR FOAM/SCREEN
FILTERS:
DO NOT A'rI'EMPT
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 Roebuck and
Co. (or Sears Canada, Inc.) Service Center.
B. TO REMOVE AND INSTALL FILTER(S):
1. Remove wing nuts and cover.
2. Slide FILTER A off FILTER B.
3. Inspect filter(s) for discoloration or dirt accumulation. If either ispresent,
service per preceding "TO SERVICE FILTER(S)" instructions.
4. Remove nuts and FILTER B. Discerd 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 finger tight and then
tam one (1) more complete turn.
7. Slide foam filter over paper filter.
8. Install cover and wing nuts. Tighten wing nuts.
NUTS
--
FILTER A
(FOAM)
FILTER B
Figure 3
MAINTENANCE
(Continued)
®
SPARK
PLUG
(see Figure 4):
This spark ignition system meets all requirements of the Canadian
Interference-Causing Equipment Regulations. This engine complies with
all current Australian and New Zealand limitationsregarding electromagnetic
interference. Check spark plug yearly or every 100 operating hours.
A. Clean area around spark plug.
B. Remove and inspect spark plug.
C. Replace spark plug if electrodes
are pitted, burned or porcelain is
cracked. For replacement use Champion RN4C or equivalent.
NOTE: A resistor spark plug must be used for replacement.
D. Check electrode gap with wire feeler gauge and set gap at .030 if
necessary.
E. Install spark plug, tighten securely.
CTRODES
.030 GAP
'PORCELAIN
Figure4
(_) ALTERNATOR
AND BATTERY
(ifso equipped):
A. ALTERNATOR:
For electrical problems such as inoperative starter or discharged
battery, see your nearby Sears Roebuck and CO. (or Sears Canada,
Inc.)Service Center forfuse replacement (if so equipped), maintenance
and repairs.
B. BATrERY:
1.
Whenservicingbattery,
alwaysconnectcablestobatteryexactly
as they were before removal (ground cable to battery negative [-
or neg.] post). If incorrectly connected, altemator won't charge
battery. If this happens, see your Sears Roebuck and Co. (or
Sears Canada, Inc.) Service Center.
2.
Never expose engine igniti0n system to battery power. If battery
cable or any live wire contacts ignition system ground wire, engine
ignition system may be damaged.
3.
If external battery charger is used, disconnect positive (+ or pus.)
cable from battery to prevent possible damage.
4.
See battery manufacturer's
instructions for service and storage.
(_) COOLING
SYSTEM:
IMPORTANT:
Frequently remove any g rass clippings, dirt and debris from
cooling fins, air intake screen and levers and linkage (see Figurss 1 and 5).
This will help ensure adequate cooling and correct engine speed.
AIR INTAKE SCREEN
Figure 5
@CHECK
ENGINE
AND
EQUIPMENT
OFTEN
FOR
LOOS_
NUTS, BOLTS AND ATTACHMENTS AND KEEP THES_
==,
ITEMS
TIGHTENED.
J
Page 3
181-1251-11
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