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11

SECTION 6:  MAKING ADJUSTMENTS

WARNING: 

Never attempt to make any

adjustments while the engine is running,
except where specified in the operator’s
manual.

Carburetor 

WARNING: 

 If any adjustments need to be

made to the engine while the engine is
running (e.g. carburetor), keep clear of all
moving parts. Be careful of muffler, engine
and other surrounding heated surfaces.

Minor carburetor adjustments may be required to 
compensate for differences in fuel, temperature, 
altitude and load. To adjust carburetor, refer to the 
engine manual packed with your mower.

NOTE: 

A dirty air cleaner will cause an engine to run

rough. Be certain air cleaner is clean and attached to
the carburetor before adjusting carburetor. 

Cutting Height 

An adjusting plate and thumb lever at each wheel 
position provides cutting height adjustment. Each 
adjusting plate has nine height positions. 

Simply depress the lever towards wheel and move 
wheel and lever assembly to desired position. All 
wheels must be placed in the same relative 
position. See Figure 11.

Figure 11

Handle Height 

Your mower is shipped with the handle in the higher 
height position.To lower the handle height for your 
convenience, proceed as follows.

Remove the starter rope from the rope guide.

Remove the upper handle by removing the hand 
knobs and carriage bolts. Lay upper handle out of 
the way, being careful not to kink the cables.

Remove the hairpin clips from the weld pins on the 
handle brackets. Press outward on the legs of the 
lower handle, and remove it from the mower.

Turn the lower handle around so the notches on the 
bottom of the lower handle are facing forward as 
shown in Figure 12. Reassemble, placing the 
bottom holes in the handle over the weld pins in the 
handle mounting bracket.

Reassemble the upper handle.

Place the hairpin clips in the inner holes in the weld 
pins and attach the starter rope as instructed in the 
assembly instructions on page 7and 8.

Figure 12

SECTION 7:  MAINTAINING YOUR LAWN MOWER

WARNING: 

Before servicing, repairing, or

inspecting, release the blade control handle
and wait until the engine comes to a complete
stop. Disconnect the spark plug wire and
ground it against the engine to prevent
unintended starting.

Replacing Rear Flap 

To remove rear flap, cut off the flat end of the wire 
rod which secures it to the deck. See Figure 13.

 

Height

Adjustment

Lever

Notch

Lower

Handle

Summary of Contents for PR-521

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 workin...

Page 2: ...epartment or an authorized dealer You can locate the model number by standing in the operating position and looking down at the rear of the deck A sample model plate is explained below For future refe...

Page 3: ...n bystanders helpers and pets at least 75 feet from the mower while it is in operation Stop machine if anyone enters the area 6 Always wear safety glasses or safety goggles during operation and while...

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 rea...

Page 5: ...nd operating the mower 8 Never attempt to make a wheel or cutting height adjustment while the engine is running 9 Grass catcher components discharge cover and trail shield are subject to wear and dama...

Page 6: ...LY 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...

Page 7: ...lower handles for shipping purposes Pull up and back on the upper handle to raise the handle into the operating position Make certain the lower handle is seated securely into the handle mounting brack...

Page 8: ...Your lawn mower is equipped with both a mulching baffle and a mulching plug While the mulching baffle is located at the rear of the mower the mulching plug is located on the right side of the cutting...

Page 9: ...g are used only for mulching purposes Instead of collecting the grass clippings in a grass catcher some mower models have the option of recirculating the clippings back to the lawn This is called mulc...

Page 10: ...To Stop Engine and Blade Release the blade control handle to stop the engine and blade WARNING The blade will continue to rotate for three seconds after the blade control lever is released Disconnect...

Page 11: ...the handle in the higher height position To lower the handle height for your convenience proceed as follows Remove the starter rope from the rope guide Remove the upper handle by removing the hand kn...

Page 12: ...he blade adapter with light oil or engine oil Also lubricate the bolt holes bolts and inner surface of the nuts Install the blade adapter on the crankshaft with the star away from the engine Refer to...

Page 13: ...with light oil Engine oil may also be used Engine Follow engine manual for instruction and schedule of lubrication NOTE When tipping the unit empty the fuel tank and keep engine spark plug side up SE...

Page 14: ...tank with clean fresh gasoline 3 Refer to the engine manual packed with your unit Engine overheats 1 Engine oil level low 2 Dirty aircleaner 3 Air flow restricted 4 Carburetor not adjusted 1 Fill cra...

Page 15: ...15 NOTES...

Page 16: ...16 NOTES...

Page 17: ...17 NOTES...

Page 18: ...1 11 9 7 82 16 15 18 3 2 19 4 6 4 31 50 48 47 44 45 64 56 20 55 63 36 34 33 32 40 39 57 59 20 45 44 43 41 42 59 23 66 67 58 30 51 53 62 65 81 49 22 72 21 14 13 12 71 52 54 39 40 29 A A 83 45 46 76 80...

Page 19: ...48 732 0417A Rear Spring Lever 49 14578 Height Adj Assy Comp RH N I 14579 Height Adj Assy Comp LH 50 14765 Pivot Bar R H N I 14766 Pivot Bar L H 51 782 5002 Front Baffle 52 710 0654A Hex L Wash Scr 3...

Page 20: ...det 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...

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