Bolens 111-338A - Manual (Page 11)

I WARNING {
Unless the entire grass catcher is
correctly positioned on the mower,
do not open the discharge chute
doors when the engine is running.
NOTE
Periodicaliy check the cam lever on
grass catcher for correct alignment
on roller. The cam lever MUST hit on
center of roller to lock the grass
catcher in position and open the
doors ail the way open.
1
Throttle
Control Wire
Screw on
Engine
FIGURE 16.
ADJUSTMENTS
CARBURETOR ADJUSTMENTS (See figure 17)
A
CAUTION
Do not at any time make any adjust­
ment to lawn mower without first
stopping engine and disconnecting
spark piug wire.
CUTTING HEIGHT
An adjusting plate and thumb lever at each wheel
position provides cutting height adjustment. Each
adjusting plate has five holes. Height of cut wiil
be changed when the thumb lever is moved from
one hole to another. Simply depress thumb lever
towards wheel and move wheel and lever
assembly to desired position. All wheels must be
placed in the same relative position.
THROTTLE
If adjustment becomes necessary, the throttle
control wire assembly can be reset as follows:
1. Loosen, but do not remove, screw securing
throttle control wire assembly at engine. See
figure 16.
2. Move throttle control lever on handle to
“FAST” position.
3. Move lever, to which control wire is fastened
at engine, to full open position and retighten
screw
to secure throttle control wire
assembly.
\
WARNING
\
If any adjustments are made to the
engine while the engine is running
(e.g. carburetor), disengage all
clutches and blades. Keep clear of
all moving parts. Be careful of
heated surfaces and muffler.
Minor carburetor adjustment may be required to
compensate for differences in fuel, temperature,
altitude and load.
All carburetor adjustments should be made with
the air cleaner on engine. Air cleaner mounting
screw must be in carburetor when engine is run.
Best adjustment is made with a fuel tank half full
of gasoline.
To Adjust Carburetor:
1. Start engine and run long enough to warm it to
operating temperature. If engine is out of ad­
justment so that it will not start, close the
needle valve by turning it clockwise. Then
open needle valve ^Vг turns counter­
clockwise.
2. Move engine control to run engine at normal
operating speed.
a. Turn needle valve in clockwise until engine
starts to lose speed (lean mixture).
b. Then slowly turn needle valve out
counterclockwise past the point of
smoothest operation until engine just
begins to run unevenly (rich mixture).
11