Tecumseh 850, 600, HSK845 Maintenance, Adjustments, Muffler and Cylinder Exhaust Ports, Carburetor

MAINTENANCE

WARNING - TEMPERATURE OF MUFFLER AND NEARBY AREAS MAY EXCEED 1500F (650C). AVOID THESE AREAS.

À 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.

STOPPING

À 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.

Á Move remote control on equipment or any ignition stop switch on engine to “STOP” or “OFF” position (see equipment manufacturer’s instructions).

 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 (Continued)

ELECTRODES

PORCELAIN

.030 GAP

Figure 5

Á 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.

 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.

À 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.

Á 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.

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