MTD 839 Series Lawn Mower User Manual


 
8
4
Operating
Your Lawn
Mower
Blade Control Handle
The blade control handle is located on the upper handle
of the mower. See Figure 4-1. The blade control handle
must be depressed in order to operate the unit. Release
the blade control handle to stop the engine and blade.
Drive Control Handle
The drive control handle is located on the upper handle.
Squeeze the drive control handle against the upper
handle to engage drive system. Release the control
handle to disengage the drive system in order to stop,
slow down, or backup.
Recoil Starter
The recoil starter is attached to the right upper handle.
Stand behind the unit and pull the recoil starter rope to
start the unit.
Cutting Height Adjustment Lever
The height adjuster determines the cutting height of the
mower. The adjuster is located above the left rear wheel,
refer to the Adjustment Section.
Before Starting
1. Service the engine with gasoline and oil as instructed
in the separate engine manual.
WARNING: Be sure no one other
than the operator is standing
near the lawn mower while
Know Your Lawn Mower
starting engine or operating mower. Never
run engine indoors or in enclosed, poorly
ventilated areas. Engine exhaust contains
carbon monoxide, an odorless and deadly
gas. Keep hands, feet, hair and loose clothing
away from any moving parts on engine and
lawn mower.
2. Attach spark plug wire to spark plug. If unit is
equipped with a rubber boot over the end of the spark
plug wire, make certain the metal loop on the end of
the spark plug wire (inside the rubber boot) is fastened
securely over the metal tip on the spark plug.
3. Before each use, check for proper drive clutch opera-
tion by performing the following before starting the
engine:
a. With the drive control released, push mower
forward. It should move freely. Pull mower back-
ward. It should move with only a small amount of
resistance.
b. If it does not the clutch may not be releasing
completely. Do not start the engine until corrections
have been made. Check the control cable for
severe bend, kinks and binding. Also check for
grass build-up around the belt.
WARNING
Figure 4-1
Read, understand,
and follow all instruc-
tions and warnings
on the machine and
in this manual before
operating.
This blade control
mechanism is a
safety device. Never
attempt to bypass its
operations.
Use extreme care
when handling
gasoline. Gasoline is
extremely flammable
and the vapors are
explosive. Never fuel
the machine indoors
or while the engine
is hot or running.
Extinguish cigarettes,
cigars, pipes and
other sources of
ignition.