Belt Guard - Craftsman 917.295450 Owner's Manual

SERVmCE AND ADJUSTMENTS
TO REMOVE BELT GUARD (See Fig. 22)
• Remove two (2) cap nutsand washers from side of belt
guard_
• Loosen (do not remove) tine shield nut on underside of
tine shield,.
• Pull belt guard out and away from uniL
• Replace belt guard by reversing above procedure° Be
sure slot in bottom of belt guard is under head of tine
shield bolt and all nuts are tightened securely.
CAP NUTS
_IDWASHERS
__-'_ BELT
\\ GUARD
TINE SHIELD NUT
FIG. 22
ENGINE
TO ADJUST CARBURETOR (See Fig. 23)
The carburetor has a high speed fixed jet and has been
preset at the factory and adjustment shouId not be neces-
saryo However, minor adjustments may be required to
compensate for differences in fuel, temperature, altitude or
toad.. If the carburetor does need adjustment, proceed as
follows.,
In general, turning the idle needle valve in (clockwise)
decreases the supply of fuel to the engine giving a leaner
fuel!air mixture.. Turning the needle valve out (counter-
clockwise) increases the supply of fuel to the engine giving
a richer fue!/air mixture°
IMPORTANT: DAMAGE TO THE NEEDLES AND THE
SEATS IN CARBURETOR MAY RESULT IF SCREWS
ARE TURNED IN TOO TIGHT°
PRELIMINARY SETTING
* Air cleaner assembly must be assembled to the carbu-
retor when making carburetor adjustments°
o With engine off, turn idle needle valve in (clockwise)
closingit finger tight and then turn valve out (counter-
clockwise) I-I/2 turns..
FINAL SETTING
• Start engine and allow to warm for five minutes_ Make
final adjustments with engine running at idle and tine
controliever in "OFF'' position°
° Withthrottiecontrolin"SLOW"position, turn idleneedle
valve in (clock"wise) u ntil engine begins to die then turn
out (counterclockWise)until engine runs rough° Turn
valve to a point midway between those two positions,.
IDLE RPM ADJUSTMENT
• To adjust idle RPM, rotate throttle linkage counter-
clock,vise and hold against stop while adjusting idle
speed adjusting screw to obtain 1750 RPM. Release
throttle linkage.,
ACCELERATION TEST
° Move throttle control lever from "SLOW" to "FAST"
position° If engine hesitates or dies, turn idle needle
valve out (counterclockwise) 1/8 turn, Repeattest and
continue to adjust, if necessary, until engine acceter -
ates smoothly,,
High speed stop is factory adjusted Do not adjust or
damage may result,
IMPORTANT: NEVER TAMPER WITH THE ENGINE
GOVERNOR, WHICH IS FACTORY SET FOR PROPER
ENGINE SPEED, OVERSPEEDING THE ENGINE ABOVE
THE FACTORY HIGH SPEED SETTING CAN BE
DANGEROUS,, IFYOU THINKTHE ENGINE-GOVERNED
HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR
NEAREST SEARS SERVICE CENTER/DEPARTMENT,
WHICH HAS PROPER EQUIPMENT AND EXPERIENCE
TO MAKE ANY NECESSARY ADJUSTMENTS,
THROTTLE LINKAGE THROTTLE STOP
IDLE SPEED
ADJUSTING SCREW
IDLE NEEDLE VALVE
FIG. 23
17