Operator`s manual

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 inextremely dusty conditions.
a. Wash in water and detergent solution and squeeze (don't twist)
untilall dirt is removed.
b. Rinse thoroughly inclear water.
c. Wrap inaclean clothand squeeze (don'ttwist) 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 ayear 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 discolorationor dirtaccumulation. Ifeither 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
allcurrentAustralian and New Zealand limitationsregardingelectromagnetic
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 orany live wirecontacts ignitionsystem groundwire, engine
ignition system may be damaged.
3. Ifexternal 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 grass clippings, dirt and debris from
cooling fins, air intake screen and levers and linkage (see Figurss 1and 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
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