Bolens Series 540 Instruction De Maintenance

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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
WARNING: Do not at any time make any
adjustments without first stopping engine
and disconnecting spark plug wire.
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.
Remove the upper handle by removing the hand 
knobs and carriage bolts. Lay the upper handle out 
of the way, being careful not to bend or kink the 
cables.
Remove the hairpin clips from the weld pins on the 
handle brackets and remove the wing nuts and 
carriage bolts from the upper hole on the handle 
mounting bracket.  Press out on the legs of the 
lower handle and remove lower handle from the 
mower.
Turn lower handle around so the notch on the 
bottom of the lower handle is facing forward.
See Figure 10.
Reassemble, placing the bottom holes in the 
handle over the weld pins in the handle mounting 
bracket.
Place the hairpin clips in the inner holes in the weld 
pins and  insert the carriage bolts the upper hole on 
the handle mounting bracket and secure with 
plastic wing nuts.
Reassemble the upper handle to the lower handle.
Attach the starter rope as instructed in the 
Assembly Section.
   
Figure 10
Cutting Height Adjustment
An adjusting plate and spring lever at each wheel 
position provides cutting height adjustment. Each 
adjusting plate has assorted height positions. When the 
spring 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.
Notch
Lower Handle