Yard-Man 503 manual Making Adjustments, Using Your Lawn Mower, Mulching, Cutting Height Adjustment

•Your lawn mower may be equipped with a constant speed throttle, which is set at full throttle for best performance.

•Stand behind the mower and squeeze the blade control handle against the upper handle.

•Grasp recoil starter handle and pull rope out slowly

until engine reaches the start of compression cycle (rope will pull slightly harder at this point).

Let the rope rewind slowly. Pull rope with a rapid, continuous, full arm stroke. Keeping a firm grip on the starter handle, let the rope return to the starter slowly.

Using Your Lawn Mower

Be sure that the lawn is clear of stones, sticks, wire, or other objects which could damage the lawn mower or the engine. Such objects could be accidently thrown by the mower in any direction and cause serious personal injury to the operator and others.

For best results, do not cut wet grass because it tends to stick to the underside of the mower, preventing proper discharge of grass clippings, and could cause you to slip and fall. New grass, thick grass, or wet grass may require a narrower cut.

For a healthier lawn, never cut off more than one-third of the total length of the grass. Your lawn should be cut

in the fall as long as there is growth. This mower is designed to be operated at full throttle to give you the best cut and do the most effective job of mowing or mulching.

WARNING: If you strike a foreign object, stop the engine. Remove wire from the spark plug, thoroughly inspect the mower for any damage, and repair the damage before restarting and operating the mower. Extensive vibration of the mower during operation is an indication of damage. The unit should be promptly inspected and repaired.

Mulching

For effective mulching, do not cut wet grass because it tends to stick to the underside of the deck, preventing proper mulching of grass clippings. New or thick grass may require a narrower cut. The ground speed should be adjusted to the condition of the lawn. If mowing has been delayed and the grass has been allowed to grow in excess of 4”, mulching is not recommended. Mow using the side discharge to reduce the grass height to 3 1/4” maximum before mulching.

SECTION 6: MAKING ADJUSTMENTS

Cutting Height Adjustment

WARNING: Do not at any time make any adjustments without first stopping engine and disconnecting spark plug wire.

Each wheel has a height adjustment lever which provides cutting height adjustment. When the adjustment lever is moved from one location to another the height of cut will be changed. Simply depress the lever towards wheel and move lever assembly to desired position. See Figure 11.

IMPORTANT: All wheels must be placed in the same relative position. For rough or uneven lawns, move the height adjustment lever to a higher position. This will help stop scalping of the grass.

Height Adjustment

Lever

Figure 11

Handle Height Adjustment

Your mower is shipped with the handle in the higher height position. To lower the height proceed as follows:

•Remove the starter rope from the rope guide.

•Disconnect the handle from the handle bracket assemblies by removing the wing nuts.

See Figure 12.

•Position each handle bracket assembly stud into one of the other holes in the lower handle.

•Each end of the lower handle must be placed in same relative position.

•Reassemble wing nuts removed earlier and reattach starter rope to rope guide.

	Lower
Wing	Handle
Nuts
Handle
Bracket
Assemblies

Figure 12

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