NOTE: U secaution whenremoving thebladeto avoid
contacting t heweldboltsonthehousing.
® Whensharpeningthe blade, followthe original
angleof grindas a guide.It is extremely i mportant
thateachcutting edgereceives anequal a mount o f
grinding toprevent a nunbalanced b lade. A nunbal-
ancedbladewill causeexcessive vibration when
rotating at highspeeds andmaycausedamage to
e The blade can be tested for balance by balancing it
on a round shaft screwdriver or nail. Remove metal
from the heavy side until it is balanced evenly See
e When reassembling the blade, tighten to between
550 and 650 inch pounds,
wrench, tighten securely
reversed when they become dull. It is suggested that
by your nearest Sears
IF ANY ADJUSTMENTS
OF ALL MOVING
PARTS. BE CAREFUL OF HEATED SUR-
FACES AND MUFFLER°
Minor carburetor adjustment may be required to com-
pensate for differences
in fuel, temperature,
TORn DO NOT MAKE UNNECESSARY
RY FOR MOST APPLICATIONS
Never attempt to change maximum engine speed It is
pre-set at the factory and should be changed only by
a qualified service technician who has the necessary
The carburetor may need re-adjusting if engine lacks
power or does not idle properly
needed, proceed as follows.
((-_) finger tight only. Forcing may cause damage
Then open 1-1/2 turns counterclockwise
® Start engine and allow to warm for five minutes.
e With throttle in FAST position, close needle valve
((-'_) until engine starts to lose speed
(lean mixture)_ Then slowly
open needle valve
(_'_) until engine JUST BEGINS
to run unevenly.. This mixture
enough for best performance under Ioado
e Place throttle control in IDLE position.
If engine idles, no further adjustment is necessary..
If engine idles too fast, turn idle speed adjusting
(v--_) until slower speed is
If engine dies, turn idle speed adjusting screw 1/4
turn clockwise (_).
Place throttle control in FAST
position and restart engine.
Move throttle control to tDLE position_ If engine
does not idle, repeat third step.
e Test the engine by using the chipper-shredder_
engine tends to stall or die out, it usually indicates
that the mixture is slightly lean and it may be nec-
essary to open (_'_)
the needle valve slightly to
provide a richer mixture, This richer mixture may
cause a slight unevenness in idling°
Your engine speed
has been factory
seL Do not
attempt to increase engine speed or it may result in
personal injury_ If you believe the engine is running
too fast or too slow, take your chipper-shredder
nearest SEARS Service Center for repair and adjust-