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10

Choke Control

Full Choke

Position (A)

Starter

Rope

Throttle

Control

Primer Bulb

Starting Engine

WARNING:  Avoid accidental starting. Be
in the starting position when pulling the
starter rope. See Figure 19. The operator
and unit must be in a stable position
while starting to avoid serious personal
injury.

WARNING: Operate this unit only in a
well ventilated area outdoors. Carbon
monoxide exhaust fumes can be lethal 
in a confined area.

1.

Mix gas with oil. Fill fuel tank with fuel/oil mixture.
See Oil and Gas Mixing Instructions.

2.

Put the On/Off Stop Control in the START (I) 
position. See Figure 17.

3.

Fully press and release primer bulb slowly 5 to 7
times. Fuel should be visible in the bulb. If fuel is
not visible, press three (3) more times, or until it
is. See Figure 18.

4.

Place the choke lever in the FULL choke position 
(A 

). See Figure 18.

5.

With the unit on the ground, squeeze the throttle
control and pull starter rope briskly. See Figure
18. Continue pulling until the engine sounds as 
though it wants to run (normally 2 to 5 pulls).

NOTE: Squeeze the throttle control until the engine
has started and warmed up.

6.

Place the choke lever in the PARTIAL choke 
position (B 

). See Figure 18.

NOTE: The unit will not run in the FULL choke 
position (A 

).

7.

Pull starter rope briskly 1 to 3 times to start the
engine. See Figure 19.

8.

If the engine does not start, repeat steps 
4 through 7.

Run

Position (C)

Partial Position (B)

NOTE: If the engine floods while trying to start, place
the choke lever in the RUN position (C 

). Squeeze

the throttle control. Pull the starter rope briskly. The
engine should start within three (3) to eight (8) pulls.

9.

Squeeze the throttle control to warm up engine
for 5 to 10 seconds. Place the choke lever in the
RUN position (C 

). See Figure 18.

NOTE: Choking is unnecessary when starting a warm
engine. Put the On/Off Stop Control in the START (I)
position and start in PARTIAL Choke 
position (B 

). See Figures 17 and 18.

To Stop Engine

1.

Release your hand from the throttle control. See
Figure 19. Allow the engine to cool down by
idling.

2.

Put the On/Off Stop Control in the STOP (O) 
position. See Figure 17.

On/Off Stop

Control

STOP/OFF (O)

START/ON (I)

Figure 17

Figure 18

Figure 19

Summary of Contents for 21A-120R000

Page 1: ...r state laws if any If a spark arrester is used it should be maintained in effective working order by the operator In the State of California the above is required by law Section 4442 of the Californi...

Page 2: ...nt or an authorized dealer You can locate the model number by standing in the operating position behind the unit and looking on the left side of the engine next to the On Off Stop Control Switch A sam...

Page 3: ...nside a closed room or building Breathing exhaust fumes can kill Operate this unit only in a well ventilated area outdoors Wear safety glasses or goggles that are marked as meeting ANSI Z87 1 standard...

Page 4: ...ard replace faulty muffler and spark arrestor keep the engine and muffler free from grass leaves excessive grease or carbon build up Never store the unit with fuel in the tank inside a building where...

Page 5: ...IVATOR SETTING UP YOUR CULTIVATOR Installing The Wheel Bracket Assembly WARNING To avoid injury from the tines wear heavy gloves and a long sleeve shirt when installing the wheel bracket assembly 1 Wi...

Page 6: ...ion the two 2 handlebar clamps with one on each side near the top of the handlebar Swing the handlebar up until it sets to the outside of the two mounting brackets on the engine See Figure 6 NOTE Posi...

Page 7: ...e of the trigger See Figure 11 4 Release the throttle trigger and guide the cable up into the slot of the trigger housing 5 Push the throttle cable housing into the trigger housing until it snaps into...

Page 8: ...ontrols the engine speed See Figure 14 On Off Stop Control The On Off Stop control switch is located on the left side mounting bracket It is used to turn the unit on and off The switch must be in the...

Page 9: ...maximum reliability pay strict attention to the oil and fuel mixing instructions on the 2 cycle oil container Using improperly mixed fuel can severely damage the engine Thoroughly mix the proper rati...

Page 10: ...as though it wants to run normally 2 to 5 pulls NOTE Squeeze the throttle control until the engine has started and warmed up 6 Place the choke lever in the PARTIAL choke position B See Figure 18 NOTE...

Page 11: ...grips firmly slowly lower the cultivator until the tines make contact with the ground See Figure 20 5 As cultivating action begins pull back on the cultivator so that the tines can penetrate the grou...

Page 12: ...TIVATOR in Section 6 Adjusting Idle Speed WARNING This unit will need to be running during idle speed adjustment Wear protective clothing and observe all safety instructions to prevent serious persona...

Page 13: ...iver 3 Pull the cover from the engine Do not force 4 Remove the air filter from behind the air filter muffler cover See Figure 24 4 Wash the filter in detergent and water Rinse the filter thoroughly S...

Page 14: ...the cylinder 4 Install a correctly gapped spark plug in the cylin der head Tighten by turning the 5 8 inch socket clockwise until snug If using a torque wrench torque to 110 120 in lb 12 3 13 5 N m Do...

Page 15: ...rized use or damage Store the unit in a dry well ventilated area Do not store next to corrosive materials such a fertilizer Store the unit out of the reach of children ENGINE WILL NOT START ENGINE WIL...

Page 16: ...41 1 2 3 8 10 12 3 4 5 7 6 11 15 16 50 51 14 13 20 52 22 17 18 19 21 37 38 39 40 42 41 32 33 26 27 28 30 41 34 36 35 30 25 44 29 43 49 45 46 47 48 24 31 23 9 SECTION 9 PARTS LIST FOR MODEL 21A 120R00...

Page 17: ...ainer Assembly 31 611061 Rope Guide 32 180317 Fuel Tank Guard Assembly 33 181079 Pull Handle 34 613103 Rope 35 181912 Housing Screw 36 182776 Starter Housing Assembly includes items 28 31 33 35 37 182...

Page 18: ...18 1 1 3 2 4 11 12 13 10 17 18 19 20 22 25 21 26 22 28 27 27 29 30 24 23 24 28 29 14 15 16 9 6 7 8 6 9 5 MODEL 21A 120R000...

Page 19: ...ndle Clamp 15 181815 Nut 16 145569 Anti Rotation Screw 17 181575 Grip 18 180943 Drive Shaft Housing Assembly 19 181577 Flexible Drive Shaft 20 181578 Retainer Sleeve includes 21 21 180288 Sleeve Retai...

Page 20: ...set forth below is given by MTD SOUTHWEST INC MTD with respect with new merchandise purchased and used in the United States its possessions and territories MTD warrants this product against defects in...

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