Tecumseh OV490EA Operator'S Manual Download Page 9

181-887-14

Four-Cycle Engine • Vertical Crankshaft • Air-Cooled

Page 7

II. Independent Speed and Choke Controls

1.

To avoid carbon monoxide poisoning, make sure 
engine is outdoors in a well-ventilated area.

2.

Move engine speed control to “FAST” position and set 
choke control to “FULL” position (see equipment manu-
facturer’s instructions). See Figures 9, 10, 11 and 12.

 NOTES

Generator and Water Pump applications may have the 
choke lever mounted on the engine. See Figure 12. 

If restarting a warm engine after a short shutdown, move 
Speed Control to “FAST” position and move Choke Control 
to “NO CHOKE” position.

3.

Push starter button or turn ignition switch key (see 
equipment manufacturer’s instructions) to start engine.

 NOTES

DO NOT operate an electric starter for more than 5 seconds 
each attempt.

If engine fails to start after 3 attempts repeat steps 2 thru 3.

4.

When engine starts:

a. Release starter button or ignition switch key.

b. Next, move choke control to “1/2 CHOKE” position 

until engine runs smoothly.

c. Next, move choke control to “NO CHOKE” position.

5.

Finally, move engine speed control to desired speed in 
“RUN” range.

 NOTES

If engine starts, but falters when choke is moved to “NO 
CHOKE” position:

a. Momentarily move choke control back to “FULL 

CHOKE” position.

b. Next, move choke control to “1/2 CHOKE” position 

until engine runs smoothly.

c. Finally, move choke control to “NO CHOKE” 

position.

If engine dies after control is moved to “NO CHOKE” 
position, repeat steps 2 thru 5 to restart engine.

6.

If engine fires but does not continue to run, move 
choke control lever to “NO CHOKE” position and start 
engine.

7.

If engine fails to start after 3 attempts in the “NO 
CHOKE” position, move choke control to “FULL 
CHOKE” position and start engine.

8.

If engine does not start after following steps 1 thru 7, 
contact your Authorized Tecumseh Servicing Dealer. 
DO NOT attempt to start or troubleshoot this engine in 
any other way

.

Figure 10. Independent Speed and Choke Controls

Figure 11. Choke Control Positions

Figure 12. Engine Mounted Choke Lever

Choke 
Control

Speed 
Control

1. No Choke

2. 1/2 Choke

3. Full Choke

1

2

3

1. No Choke

2. 1/2 Choke

3. Full Choke

1

2

3

Summary of Contents for OV490EA

Page 1: ...ore Starting Your Engine 4 V Starting Your Engine 6 VI Stopping Your Engine and Short Term Storage 9 VII Maintenance 10 VIII Transporting Your Engine 13 IX Storing Your Engine 13 X Preventing Forest B...

Page 2: ...rsonal safety Keep this manual handy at all times for future reference Read it carefully and familiarize yourself with operating maintenance components and safety instructions Notice Regarding Emissio...

Page 3: ...GASOLINE container to store and dispense fuel Tecumseh recommends purchasing gasoline in containers with a capacity of 2 5 gallons or less Small containers are easier to handle and help eliminate spil...

Page 4: ...d Accidental Starts To prevent accidental starting when working on equipment always Disconnect spark plug wire and keep it away from spark plug See Figure 2 Keep the disconnected spark plug wire secur...

Page 5: ...for individuals who have had adequate training experience and who practice proper tool usage Service procedures should be clearly understood and practiced when servicing Tecumseh Engines Order as part...

Page 6: ...every 5 operating hours when engine is warm Check oil level more frequently during engine break in Keep oil level between FULL and ADD marks on dipstick See Figure 6 Insure oil fill cap plug is tight...

Page 7: ...nd be ignited by a spark or flame many feet away from engine To prevent injury or death from fuel fires follow these instructions 1 Stop engine and allow it to cool before refueling 2 Be sure engine i...

Page 8: ...e Fig ures 8 and 9 NOTE If restarting a warm engine after a short shutdown move combined control to FAST instead of CHOKE or START position See Figures 8 and 9 3 Push starter button or turn ignition s...

Page 9: ...tion until engine runs smoothly c Next move choke control to NO CHOKE position 5 Finally move engine speed control to desired speed in RUN range NOTES If engine starts but falters when choke is moved...

Page 10: ...il mechanism If engine fails after 3 pulls repeat steps 2 thru 3 4 When engine starts d Move combined control to FAST position e Next move combined control to desired speed in RUN range See Figure 13...

Page 11: ...NOTES If engine starts but falters when choke is moved to NO CHOKE position a Momentarily move choke control back to FULL CHOKE position b Next move control to 1 2 CHOKE position until engine runs smo...

Page 12: ...rect drain plug location if present See equipment manufacturer s instructions See Figure 19 2 Disconnect spark plug wire and keep it away from spark plug See G Avoid Accidental Starts instruc tions on...

Page 13: ...iscoloration or dirt accumulation If either is present see I Servicing Foam Pre Filter instructions on page 12 or see II Servicing Paper Fil ters instructions on page 12 4 Replace air cleaner cover an...

Page 14: ...cleaner cover while lifting upward then outward 3 Remove fasteners 4 Remove and inspect filter s for discoloration or dirt accumulation If either is present see I Servicing Foam Pre Filter instruction...

Page 15: ...ower housing In addition remove grass clippings dirt and debris from the following areas Cooling Fins Air Intake Screen Levers Linkage Guards Carburetor Head Removing debris will facilitate adequate c...

Page 16: ...such as hot water and space heaters clothes dryers electric motors etc NOTE Instead of using a fuel preservative stabilizer you can empty the fuel tank as described under I Draining Fuel instructions...

Page 17: ...ter cord handle and pull out slowly using a full arm stroke Repeat once This will distribute oil throughout the cylinder to prevent corrosion during storage 6 Install spark plug 7 Carefully disconnect...

Page 18: ...ner Dealer Date_______________Owner Dealer Date_______________Owner Dealer Date_______________Owner Dealer Date_______________Owner Dealer Date_______________Owner Dealer Date_______________Owner Deal...

Page 19: ...__________Owner Dealer Date_______________Owner Dealer Date_______________Owner Dealer Date_______________Owner Dealer Every 100 Hours or Seasonally Scheduled Maintenance 1 Replace Paper Filter 2 Repl...

Page 20: ...Page 18 Four Cycle Engine Vertical Crankshaft Air Cooled 181 887 14...

Page 21: ...181 887 14 Four Cycle Engine Vertical Crankshaft Air Cooled Page 19 NOTES...

Page 22: ...reof has failed due to abuse neglect improper maintenance or unapproved modifications You are responsible for presenting your small off road engine to a Tecumseh Authorized Service Outlet any Tecumseh...

Page 23: ...for replacement as required maintenance in the Operator s Manual shall be warranted for the period of time prior to the first scheduled replacement point for that part If the part fails prior to the...

Page 24: ...eview of the engine model number on the Important Engine Information decal One letter in the engine model number will be surrounded by parenthesis A B C D E H K or M and that letter is your engine war...

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