Husqvarna 5521RS 用户手册

Over time, the drive control system may become “loose”, 
resulting in decreased speed.  There is a button on the 
un der side of the drive control housing to increase tension 
on the drive cable.  Pro ceed as follows:

1.      Turn unit off and disconnect spark plug wire from spark 

plug.

2.   Pull drive control lever ALL THE WAY BACK to the 

handle.

3.    Push button on underside of drive control.  While hold-

ing button in, return drive control lever to dis en gaged 
position ALL THE WAY FORWARD.

NOTE: Do not ratchet the adjustment.

4.    Release button.

5.    Operate mower to test drive speed.  If con di tion be-

 comes worse after the above steps (forward speed 
has become slower), your system was not “loose”. 

 

Re peat ing the above steps will return your unit to the 
proper adjustment and speed.

6.    If condition fails to improve after the above steps (for-

ward speed remains the same), your drive belt is worn 
and should be re placed.

All four wheels are adjusted by a single lever. 

•      Pull adjuster lever toward wheel. To raise mower, move 

lever forward to desired position, To lower mower, move 
the lever toward the rear.

The engine speed was set at the factory for optimum per-
formance.  Speed is not adjustable.

•         Your lawn mower is equipped with an operator presence 

control bar which requires the operator to be positioned 
behind the lawn mower handle to start and operate the 
lawn mower.

•      Self-propelling  is  controlled  by  hold ing the operator 

presence control bar down to the handle and pulling 
the drive control lever rearward to the handle.  The 
farther toward the handle the lever is pulled, the faster 
the unit will travel.

•         Forward motion will stop when either the operator pres-

ence control bar or drive control lever are released. To 
stop forward motion without stop ping engine, re lease 
the drive control lever only. Hold op er a tor presence 
control bar down against handle to con tin ue mowing 
without self-propelling.

NOTE: If after releasing the drive control the mower will 
not roll backwards, push the mower forward slightly to 
disengage drive wheels.

The operation of any lawn mower can  result in foreign objects thrown into the eyes, which can result 
in severe eye damage.  Always wear safety glasses or eye shields while operating your lawn mower or 
performing any adjustments or repairs.  We recommend standard safety glasses or a wide vision safety 
mask over spectacles.