Poulan PD18H42STB TO ADJUST THROTTLE CONTROL CABLE See Fig, TO ADJUST CARBURETOR See Fig, Engine

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TO ADJUST THROTTLE CONTROL CABLE (See Fig. 32)

SERVICE AND ADJUSTMENTS

ENGINE

Maintenance, repair, or replacement of the emission con- trol devices and systems, which are being done at the customers expense, may be performed by any non-road engine repair establishment or individual. Warranty repairs must be performed by an authorized engine manufacturer's service outlet.

TO ADJUST THROTTLE CONTROL CABLE (See Fig. 32)

The throttle control has been preset at the factory and adjustment should not be necessary. Check adjustment as described below before loosening cable. If adjustment is necessary, proceed as follows:

•With engine not running, move throttle control lever from slow to choke position. Slowly move lever from choke to fast position.

•Check to see if hole in throttle lever and hole in speed control bracket are aligned.

•If holes are not aligned, loosen cable clamp screw and align the holes by inserting a pencil or a 1/4" drill bit through both holes.

•Pull throttle cable up to remove slack and tighten cable clamp screw. Remove alignment pencil or drill bit.

TO ADJUST CARBURETOR (See Fig. 33)

The carburetor has been preset at the factory and adjustment should not be necessary.However, minor adjustment may be required to compensate for differences in fuel, temperature, altitude or load. If the carburetor does need adjustment, proceed as follows:

In general, turning the adjusting needles in (clockwise) decreases the supply of fuel to the engine giving a leaner fuel/air mixture. Turning the adjusting needles out (coun- terclockwise) increases the supply of fuel to the engine giving a richer fuel/air mixture.

IMPORTANT: DAMAGETOTHE NEEDLES ANDTHE SEATS IN CARBURETOR MAY RESULT IF NEEDLE IS TURNED IN TOO TIGHT.

NOTE: The carburetor on this engine is low emission. It is equipped with an idle fuel adjusting needle with a limiter cap, which allows some adjustment within the limits allowed by the cap. Do not attempt to remove the limiter cap. The limiter cap cannot be removed without breaking the adjusting needle.

•Be sure you have a clean air filter and the throttle control cable is adjusted properly (see above).

•Start engine and allow to warm for five minutes. Make adjustments with engine running and shift/motion control lever in neutral (N) position.

•Idle speed setting - With throttle control lever in slow position, engine should idle at 1750 RPM. If engine idles too slow or fast, turn idle speed adjusting screw in or out until correct idle is attained.

•Idle fuel needle setting - With throttle control lever in slow position, turn idle fuel adjustment needle in (clockwise) until engine begins to die and then turn out (counterclockwise) until engine runs rough.Turn needle to a point midway between those two positions.

•Recheck idle speed. Readjust if necessary.

ACCELERATION TEST -

•Move throttle control lever from slow to fast position. If engine hesitates or dies, turn idle fuel adjusting needle out (counterclockwise) 1/8 turn. Repeat test and con- tinue to adjust, if necessary, until engine accelerates smoothly.

High speed stop is factory adjusted. Do not adjust - dam- age may result.

IMPORTANT: NEVER TAMPER WITH THE ENGINE GOVERNOR, WHICH IS FACTORY SET FOR PROPER ENGINE SPEED.OVERSPEEDINGTHE ENGINE ABOVETHE FACTORY HIGH SPEED SETTING CAN BE DANGEROUS. IF YOU THINK THE ENGINE-GOVERNED HIGH SPEED NEEDS ADJUSTING, CONTACTYOUR NEAREST AUTHORIZED SERVICE CENTER/ DEPARTMENT, WHICH HAS PROPER EQUIPMENT AND EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS.

CABLE

CLAMP

SCREW

SPEED CONTROL

BRACKET

THROTTLE

LEVER

FIG. 32

IDLE SPEED

ADJUSTING

SCREW

IDLE FUEL

ADJUSTING

NEEDLE

FIG. 33

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Contents PD18H42STB MODELIMPORTANT MANUAL OWNERS MANUALIV. SERVICE SAFETY RULESSAFE OPERATION PRACTICES FOR RIDE-ON MOWERS I. GENERAL OPERATIONNever carry passengers or children even with the blades off PRODUCT SPECIFICATIONS TABLE OF CONTENTSCUSTOMER RESPONSIBILITIES Steering Wheel UNASSEMBLED PARTSSeat Gauge WheelTOOLS REQUIRED FOR ASSEMBLY ASSEMBLYHOW TO SET UP YOUR TRACTOR INSTALL SEAT See FigASSEMBLE GAUGE WHEELS TO MOWER DECK See Fig. 4A CHECK BATTERY See FigFIG. 4A TO INSTALL MULCHER PLATE See Fig. 4B TO SET UP YOUR MOWER FOR MULCHINGTO CONVERT TO BAGGING OR DISCHARGING CHECK TIRE PRESSUREOPERATION HEIGHT ADJUSTMENT KNOB - Used to adjust the mower cutting height KNOW YOUR TRACTORTO ADJUST MOWER CUTTING HEIGHT See Fig HOW TO USE YOUR TRACTORTO SET PARKING BRAKE See Fig STOPPING See FigTO OPERATE MOWER See Fig TO ADJUST GAUGE WHEELS See FigTO OPERATE ON HILLS TO TRANSPORT See Figs. 5 andTOWING CARTS AND OTHER ATTACH- MENTS BEFORE STARTING THE ENGINECHECK ENGINE OIL LEVEL ADD GASOLINEPURGE TRANSMISSION MOWING TIPSMAX 1/3 MULCHING MOWING TIPSLUBRICATION CHART MAINTENANCEGENERAL RECOMMENDATIONS BEFORE EACH USETRACTOR BATTERYBRAKE OPERATION TIRESCLEAN AIR INTAKE/COOLING AREAS CLEAN AIR SCREENENGINE V-BELTSENGINE OIL FILTER CLEANINGAIR FILTER See Fig MUFFLERTO INSTALL MOWER See Fig SERVICE AND ADJUSTMENTSTO REMOVE MOWER See Fig BOTH FRONT LINKS MUST BE EQUAL IN LENGTH TO LEVEL MOWER HOUSINGTO REPLACE MOWER BLADE DRIVE BELT See Fig TO CHECK AND ADJUST BRAKE See FigTO REPLACE MOTION DRIVE BELT See Fig WITH PARKING BRAKE “ENGAGED”TRANSAXLE MOTION CONTROL LEVER NEUTRAL ADJUSTMENT See Fig TRANSMISSION REMOVAL/REPLACEMENTTO ADJUST STEERING WHEEL ALIGNMENT TO START ENGINE WITH A WEAK BATTERY See FigTO REMOVE HOOD AND GRILL ASSEMBLY See Fig REPLACING BATTERY See Figs. 29 andTO REPLACE HEADLIGHT BULB INTERLOCKS AND RELAYSTO ADJUST CARBURETOR See Fig TO ADJUST THROTTLE CONTROL CABLE See FigOTHER STORAGEFUEL SYSTEM ENGINE OILPROBLEM TROUBLESHOOTING POINTSCAUSE CORRECTIONEngine continues to run SCHEMATIC REPAIR PARTSTRACTOR - - MODEL NUMBER PD18H42STB NON-REMOVABLE REMOVABLE CONNECTIONS CONNECTIONSTRACTOR - - MODEL NUMBER PD18H42STB ELECTRICAL KEY PART NO. NO. DESCRIPTION chassiselite svpro4 TRACTOR - - MODEL NUMBER PD18H42STB CHASSIS AND ENCLOSURES174619 82 165 TRACTOR - - MODEL NUMBER PD18H42STB DRIVEdrive-hydro.stlt34 TRACTOR - - MODEL NUMBER PD18H42STB DRIVE steeringpl.lt29 TRACTOR - - MODEL NUMBER PD18H42STB STEERING ASSEMBLYTRACTOR - - MODEL NUMBER PD18H42STB STEERING ASSEMBLY OPTIONAL EQUIPMENT Spark Arrester TRACTOR - - MODEL NUMBER PD18H42STB ENGINETRACTOR - - MODEL NUMBER PD18H42STB ENGINE seatlt.knob1 TRACTOR - - MODEL NUMBER PD18H42STB SEAT ASSEMBLYWHEELS & TIRES TRACTOR - - MODEL NUMBER PD18H42STB DECALSlift-rh.1pc.stlt12 TRACTOR - - MODEL NUMBER PD18H42STB MOWER LIFTTRACTOR - - MODEL NUMBER PD18H42STB MOWER LIFT TRACTOR - - MODEL NUMBER PD18H42STB MOWER DECK Mower Deck Assembly LIMITED WARRANTY ONLY RIDE UP AND DOWN HILL NOT ACROSS HILL 15 DEGREES MAX SUGGESTED GUIDE FOR SIGHTING SLOPES FOR SAFE OPERATIONFOR SERVICE OR REPLACEMENT PARTS PARTS AND SERVICE
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