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20. Never operate mower without proper trail shield, 

discharge cover, grass catcher, blade control handle or 
other safety protective devices in place and working. 
Never operate mower with damaged safety devices. 
Failure to do so, can result in personal injury.

21. Muffler and engine become hot and can cause a burn. Do 

not touch.

22. Only use parts and accessories made for this machine by 

the manufacturer. Failure to do so, can result in personal 
injury.

23. If situations occur which are not covered in this manual, 

use care and good judgment. Contact your dealer for 
assistance or call 1-800-528-1009 for the name of your 
nearest dealer.

Slope Operation

Slopes are a major factor related to slip and fall accidents 
which can result in severe injury. Operation on slopes 
requires extra caution. If you feel uneasy on a slope, do not 
mow it. For your safety, use the slope gauge included as part 
of this manual to measure slopes before operating this unit on 
a sloped or hilly area. If the slope is greater than 15 degrees, 
do not mow it.

Do:

1.

Mow across the face of slopes; never up and down. 
Exercise extreme caution when changing direction on 
slopes.

2.

Watch for holes, ruts, rocks, hidden objects, or bumps 
which can cause you to slip or trip. Tall grass can hide 
obstacles.

3.

Always be sure of your footing. A slip and fall can cause 
serious personal injury. If you feel you are losing your 
balance, release the blade control handle immediately, 
and the blade will stop rotating within 3 seconds.

Do Not:

1.

Do not mow near drop-offs, ditches or embankments, 
you could lose your footing or balance.

2.

Do not mow slopes greater than 15 degrees as shown on 
the slope gauge.

3.

Do not mow on wet grass. Unstable footing could cause 
slipping.

Children

Tragic accidents can occur if the operator is not alert to the 
presence of children. Children are often attracted to the 
mower and the mowing activity. They do not understand the 
dangers. Never assume that children will remain where you 
last saw them.

1.

Keep children out of the mowing area and under the 
watchful care of a responsible adult other than the 
operator.

2.

Be alert and turn mower off if a child enters the area.

3.

Before and while moving backwards, look behind and 
down for small children.

4.

Use extreme care when approaching blind corners, 
doorways, shrubs, trees, or other objects that may 
obscure your vision of a child who may run into the 
mower.

5.

Keep children away from hot or running engines. They 
can suffer burns from a hot muffler. 

6.

Never allow children under 14 years old to operate a 
power mower. Children 14 years old and over should 
read and understand the operation instructions and 
safety rules in this manual and should be trained and 
supervised by a parent.

Service

Safe Handling Of Gasoline:

1.

To avoid personal injury or property damage use extreme 
care in handling gasoline. Gasoline is extremely 
flammable and the vapors are explosive. Serious 
personal injury can occur when gasoline is spilled on 
yourself or your clothes which can ignite. 

2.

Wash your skin and change clothes immediately.

3.

Use only an approved gasoline container.

4.

Never fill containers inside a vehicle or on a truck or 
trailer bed with a plastic liner. Always place containers on 
the ground away from your vehicle before filling.

5.

When practical, remove gas-powered equipment from 
the truck or trailer and refuel it on the ground. If this is not 
possible, then refuel such equipment on a trailer with a 
portable container, rather than from a gasoline dispenser 
nozzle.

6.

Keep the nozzle in contact with the rim of the fuel tank or 
container opening at all times until fueling is complete. Do 
not use a nozzle lock-open device.

7.

Extinguish all cigarettes, cigars, pipes and other sources 
of ignition.

8.

Never fuel machine indoors because flammable vapors 
will accumulate in the area.

9.

Never remove gas cap or add fuel while the engine is hot 
or running. Allow engine to cool at least two minutes 
before refueling.

10. Never over fill fuel tank. Fill tank to no more than ½ inch 

below bottom of filler neck to provide space for fuel 
expansion.

11. Replace gasoline cap and tighten securely.
12. If gasoline is spilled, wipe it off the engine and 

equipment. Move unit to another area. Wait 5 minutes 
before starting the engine.

13. Never store the machine or fuel container inside where 

there is an open flame, spark or pilot light as on a water 
heater, space heater, furnace, clothes dryer or other gas 
appliances. 

14. To reduce fire hazard, keep mower free of grass, leaves, 

or other debris build-up. Clean up oil or fuel spillage and 
remove any fuel soaked debris. 

15. Allow a mower to cool at least 5 minutes before storing.

General Service:

1.

Never run an engine indoors or in a poorly ventilated 
area. Engine exhaust contains carbon monoxide, an 
odorless and deadly gas.

2.

Before cleaning, repairing, or inspecting, make certain 
the blade and all moving parts have stopped. Disconnect 
the spark plug wire and ground against the engine to 
prevent unintended starting. 

Summary of Contents for S621 SS

Page 1: ...covered land unless the engine s exhaust system is equipped with a spark arrester meeting applicable local or 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 California Public Resources Code Other states may have similar laws Federal laws apply on federal lan...

Page 2: ... help from our Customer Support Department or an authorized dealer You can locate the model number by standing behind the unit in the operating position and looking at the rear of the deck A sample model plate is explained below For future reference please copy the model number and the serial number of the equipment in the space below CALLING CUSTOMER SUPPORT If you have difficulty assembling this...

Page 3: ...ers helpers children and pets at least 75 feet from the machine while it is in operation Stop machine if anyone enters the area 6 Always wear safety glasses or safety goggles during operation and while performing an adjustment or repair to protect your eyes Thrown objects which ricochet can cause serious injury to the eyes 7 Wear sturdy rough soled work shoes and close fitting slacks and shirts Sh...

Page 4: ...r 5 Keep children away from hot or running engines They can suffer burns from a hot muffler 6 Never allow children under 14 years old to operate a power mower Children 14 years old and over should read and understand the operation instructions and safety rules in this manual and should be trained and supervised by a parent Service Safe Handling Of Gasoline 1 To avoid personal injury or property da...

Page 5: ...stment while the engine is running 9 Grass catcher components discharge cover and trail shield are subject to wear and damage which could expose moving parts or allow objects to be thrown For safety protection frequently check components and replace immediately with original equipment manufacturer s O E M parts only listed in this manual Use of parts which do not meet the original equipment specif...

Page 6: ... N T I N G A 1 5 S L O P E WARNING Do not mow on inclines with a slope in excess of 15 degrees a rise of approximately 2 1 2 feet every 10 feet A riding mower could overturn and cause serious injury If operating a walk behind mower on such a slope it is extremely difficult to maintain your footing and you could slip resulting in serious injury Operate RIDING mowers up and down slopes never across ...

Page 7: ...le carriage bolts must be seated properly into the handles See Figure 1 Figure 1 NOTE Your mower is shipped with the handle in the higher height position If you wish to lower the height of the handle refer to the Adjustment Section at this time Remove the hairpin clip from the outer hole in the weld pin on the handle mounting bracket Using a pair of pliers squeeze one leg of the lower handle again...

Page 8: ...le making sure the inner lip of attachment goes under the edge of the deck Secure with the wing nuts previously removed See Figure 6 Lift chute door on the grass bag adapter and slide grass bag onto the adapter See Figure 7 NOTE The chute door has been designed to move the starter rope out of the way of the bag when the chute door is opened Figure 7 Attaching Side Discharge Chute Remove mulching b...

Page 9: ... lever is located on the drive clutch control housing on the upper handle This lever is used to select the forward speed of the mower When changing speed selection release the drive clutch control See Figure 9 NOTE Slide the shift lever to a different speed position only when the engine is running Otherwise it may cause damage to the mower Safety Key The safety key is located on the engine See Fig...

Page 10: ...ire firmly on spark plug 7 Turn SwiftStart safety key 1 4 turn clockwise to RUN position 8 Firmly push primer bulb three times 9 While standing at the operating position and behind the upper handle depress the starter control button fully with your right thumb 10 Using your left hand pull the blade control handle all the way toward the upper handle 11 Release the button 12 Grasp the recoil rope st...

Page 11: ...ransporting mower ALWAYS lock and remove safety key and store in a safe place until next use The safety key is designed and intended to be removed from engine when not in use Removing key will prevent unsupervised or unexpected starting of mower by children or unsuspecting adults The safety key must be in the locked position before it can be removed Using Your Lawn Mower Thoroughly inspect the are...

Page 12: ...g height adjustment lever is located above the left rear wheel To adjust the cutting height pull the lever out and away from the mower and choose a cutting height Slide it into the new position See Figure 12 Figure 12 NOTE For rough or uneven lawns move the height adjustment lever to the highest position This will help stop scalping Handle Height Adjustment Your mower is shipped with the handle in...

Page 13: ...on the adjustable cable bracket and tighten hex nut Figure 16 SECTION 7 MAINTAINING YOUR LAWN MOWER WARNING Be sure to disconnect the spark plug wire and De energize starter before performing any repairs or maintenance DO NOT attempt any maintenance or service to the engine and or mower equipped with the safety key in the unlocked and or energized mode WARNING NEVER assume the starter is de energi...

Page 14: ...ower and reduce serviceability Blade Replacement Sharpening WARNING When removing the cutting blade for sharpening or replacement protect your hands by using heavy gloves or a rag to grasp the cutting blade Remove the bolt and the blade bell support which hold the blade and the blade adapter to the engine crankshaft See Figure 18 Remove the blade and the adapter from the crankshaft WARNING Periodi...

Page 15: ...ve the three hex screws holding the baffle to the deck and pivot baffle towards the rear of the mower See Figure 19 Figure 19 Remove hex bolt from the rear of unit holding the transmission to the mower housing See Figure 20 Figure 20 Tilt the transmission forward and loosen the idler pulley bolt and lock nut half a turn See Figure 21 Using a pair of pliers pull back and rotate belt keeper bracket ...

Page 16: ...ard pin Reinstall the bolt securing transmission to rear mower housing Pivot the baffle back to its original position and secure with three hex screws earlier removed Lightly lubricate the inside of the blade adapter and reinstall the spacer wave washer blade adapter assembly and blade in the correct order Tighten the hex bolt to secure the blade to torque 450 600 in lbs SECTION 8 OFF SEASON STORA...

Page 17: ...ct wire to spark plug 4 Place safety key in run position 5 Fill tank with clean fresh gasoline 6 Clean fuel line 7 Clean adjust gap or replace 8 Wait a few minutes to start 9 Use recoil starter to start engine Engine runs erratic 1 Spark plug wire loose 2 Blocked fuel line or stale fuel 3 Vent in gas plugged 4 Water or dirt in fuel system 5 Dirty air cleaner 6 Carburetor out of adjustment 1 Connec...

Page 18: ... 7 55 56 59 61 16 25 31 39 37 73 6 1 2 4 5 1 6 3 6 2 44 Pulley Assembly for reference only 45 49 45 46 47 48 43 42 48 43 9 5 4 5 4 74 78 80 77 79 75 76 68 68 67 69 70 9 8 10 8 61 54 53 50 52 72 2 66 IMPORTANT For a proper working machine use Factory Approved Parts V BELTS are specially designed to en gage and disengage safely A substitute non OEM V Belt can be dangerous by not disengaging complete...

Page 19: ...ield Wire 42 611 0064 Front Axle Assembly 43 710 1241 Hx Scr Wash Hd Hi Lo 44 710 1242 Scr Torx Truss Hi Lo 45 714 0104 Cotter Pin 072 x 1 12 Lg 46 731 1836 Front Axle Cover Black 47 736 0286 Bowed Washer 48 741 0492A Bush Block 505 Dia x 62 49 782 0565 Control Arm 50 734 2008 Wheel 8 x 2 51 734 2010 Wheel 9 x 2 52 736 0105 Spring Washer 53 736 0504 Wave Wash 510 x 750 x 017 54 738 0102 Shldr Scr ...

Page 20: ...732 1172 Torsion Spring 16 731 0904A Upper Control Housing 17 731 0924 6 Speed Shift Lever 18 713 0397 Gear Insert 19 710 1667A C Sunk Tap Screw 10 x 75 L 20 732 0627 Shift Lever Spring 21 16864 6 Speed Rack Cable Brkt 22 731 0905A Lower Control Housing 23 731 0906 Cable Mounting Cap 24 731 0620 Control Lever 25 746 0939 6 Speed Cable 26 746 0711A Self Propelled Cable 27 647 0058 Control Handle 28...

Page 21: ...712 0896 Hex Jam Nut 1 4 28 6 782 7598 Belt Keeper 7 741 0600 Bearing 8 750 1050 Flange Spacer 9 682 0027A Idler Bracket Assembly 10 710 0299 Hex Cap Screw 1 4 28x 1 0 11 732 0849A Extension Spring 12 741 0682A Bearing Sleeve 13 736 0570 Flat Washer 885 x 1 45 14 721 0329 Oil Seal 15 618 0253 Upper Housing Assembly 16 736 0616 Thrust Washer 504 x 70 17 717 1487 Pinion Shaft 10T 18 736 0314 Thrust ...

Page 22: ...22 Safety Decorative Labels ...

Page 23: ...23 YOUR NOTES Comments Date ...

Page 24: ...adet equipment used commercially is warranted for one year only Commercial use is defined as either having hired operators or used for income producing purposes Items not covered The warranty does not cover routine maintenance items such as lubricants filters oil fuel air and hydraulic cleaning tune ups brake and or clutch inspection adjustments made as part of normal maintenance blade sharpening ...

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