Tecumseh 850 - Manual (Page 4)

MAINTENANCE
(Continued)
STOPPING
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BEFORE STOPPING :
A. Run engine for a few minutes to help dry off any moisture on
engine.
B. To help avoid possible freeze-up of starter, proceed as
follows:
RECOIL STARTER:
With engine running, pull starter rope with a rapid continuous
full arm stroke three or four times.
NOTE: The unusual sound made by pulling starter rope will
not harm engine or starter.
ELECTRIC STARTER:
1. Connect power cord to switchbox, then to wall outlet.
2. With engine running, push starter button and spin starter
for several seconds.
NOTE: The unusual sound made by spinning starter will
not harm engine or starter.
3. Disconnect power cord from receptacle first, and then
from switchbox.
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Move remote control on equipment or any ignition stop switch
on engine to “STOP” or “OFF” position (see equipment
manufacturer’s instructions).
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AFTER ENGINE IS STOPPED:
A. DISCONNECT SPARK PLUG WIRE FROM SPARK
PLUG AND KEEP IT AWAY FROM SPARK PLUG.
B. TURN IGNITION SWITCH KEY (IF SO EQUIPPED) TO
“OFF” POSITION AND REMOVE KEY FROM SWITCH.
THIS WILL REDUCE THE POSSIBILITY OF UNAUTHO-
RIZED STARTING OF ENGINE WHILE EQUIPMENT IS
NOT IN USE.
NEVER STORE ENGINE WITH FUEL IN TANK IN-
DOORS OR IN ENCLOSED, POORLY VENTILATED
AREAS, WHERE FUEL FUMES MAY REACH AN OPEN
FLAME, SPARK OR PILOT LIGHT AS ON A FURNACE,
WATER HEATER, CLOTHES DRYER OR OTHER GAS
APPLIANCE.
MAINTENANCE
WARNING - TEMPERATURE OF MUFFLER AND NEARBY
AREAS MAY EXCEED 150 0 F (65 0 C). AVOID THESE AREAS.
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SPARK PLUG
(see Figure 5):
This spark ignition system meets all requirements of the
Canadian Interference-Causing Equipment Regulations. This
engine complies with all current Australian and New Zealand
limitations regarding 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
RCJ8Y or equivalent.
NOTE: A resistor spark plug must be used for replace-
ment.
D. Check electrode gap with wire feeler gauge and set gap
at .030 if necessary.
E. Install spark plug, tighten securely.
Page 4 181-807-14
Figure 5
ELECTRODES
.030 GAP
PORCELAIN
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MUFFLER AND CYLINDER EXHAUST PORTS:
The muffler, cylinder exhaust and compression release ports
re quire cleaning after 75 to 100 hours of operation. For this
maintenance procedure we recommend that you take your
engine to your Authorized Tecumseh Service Dealer.
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CHECK ENGINE AND EQUIPMENT OFTEN FOR LOOSE
NUTS, BOLTS AND ATTACHMENTS AND KEEP THESE
ITEMS TIGHTENED.
ADJUSTMENTS
DO NOT MAKE UNNECESSARY ADJUSTMENTS. FACTORY
SETTINGS ARE SATISFACTORY FOR MOST CONDITIONS.
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CARBURETOR:
If you think your carburetor needs adjusting, see your nearest
AUTHORIZED TECUMSEH SERVICE OUTLET. Engine
performance should not be affected at altitudes up to 7,000
feet. For operation at higher elevations, contact your AUTHO-
RIZED TECUMSEH SERVICE OUTLET.
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ENGINE SPEED:
NEVER TAMPER WITH ENGINE GOVERNOR WHICH IS
FACTORY SET FOR PROPER ENGINE SPEED.
OVERSPEEDING ENGINE ABOVE FACTORY HIGH SPEED
SETTING CAN BE DANGEROUS. CHANGING OF ENGINE
GOVERNED SPEED WILL VOID ENGINE WARRANTY.
For engine adjustments and/or repairs not covered in this “OPERA-
TOR’S MANUAL” see “WARRANTY & REPAIR” on Page 6.