Poulan 161608 owner manual To Adjust Throttle Control Cable See Fig, To Adjust Carburetor See Fig

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SERVICE AND ADJUSTMENTS

ENGINE

TO ADJUST THROTTLE CONTROL CABLE (See Fig. 28)

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 that holes “A” in governor control lever and hole in governor plate line-up. If holes “A” are not aligned, loosen clamp screw and move throttle cable until holes are aligned. Tighten clamp screw securely.

TO ADJUST CARBURETOR (See Fig. 29)

The carburetor has been preset at the factory and adjustment should not be necessary. However, minor adjustment may be required to compensate

GOVERNOR

 

GOVERNOR

CONTROL LEVER

CONTROL PLATE

 

 

HOLES “A”

CLAMP

THROTTLE

 

 

SCREW

CABLE

 

FIG. 28

 

for differences in fuel, temperature, altitude or load. If the carburetor does need adjustment, proceed as follows:

In general, turning idle mixture valve in (clockwise) decreases the sup- ply of fuel to the engine giving a leaner fuel/air mixture. Turning the idle mixture valve out (counterclockwise) increases the supply of fuel to the engine giving a richer fuel/air mixture.

IMPORTANT: DAMAGE TO THE NEEDLE VALVE AND THE SEAT IN CARBURETOR MAY RESULT IF SCREW IS TURNED IN TOO TIGHT.

PRELIMINARY SETTING -

•Air cleaner assembly must be assembled to the carburetor when making carburetor adjustments.

•Be sure the throttle control cable is adjusted properly (see above).

•With engine off turn idle mixture valve in (clockwise) closing it finger tight and then turn out (counterclockwise) 1 full turn.

FINAL SETTING -

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

•Move throttle control lever to slow position. With finger, rotate and hold throttle lever against idle speed screw. Turn idle speed screw to attain 1750 RPM.

•While still holding throttle lever against idle speed screw, turn idle mixture valve in (clockwise) until engine begins to die and then turn out (counter- clockwise) until engine runs rough. Turn valve to a point midway between those two positions. Release throttle lever.

ACCELERATION TEST -

•Move throttle control lever from slow to fast position. If engine hesitates or dies, turn idle mixture valve out (counterclockwise) 1/8 turn. Repeat test and continue to adjust, if necessary, until engine accelerates smoothly.

High speed stop is factory adjusted. Do not adjust - 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. IF YOU THINK THE ENGINE-GOVERNED HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR NEAREST AUTHORIZED SERVICE CENTER/DEPARTMENT, WHICH HAS PROPER EQUIPMENT AND EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS.

THROTTLE

IDLE SPEED

LEVER

SCREW

IDLE MIXTURE

VALVE

FIG. 29

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Contents Model NO. HD145H42G Safe Operation Practices for Ride-On Mowers Turn off blades when not mowingMow only in daylight or good artificial light Do not use grass catcher on steep slopesCustomer Responsibilities Product SpecificationsModel NUMBERHD145H42G Serial Number Date of PurchaseBattery AdjustmentsMower Adjustment MowerContents of Hardware Pack To Remove Tractor from CAR- TON Tools Required for AssemblyBefore Rolling Tractor OFF Skid Unpack CartonConnect Battery See Figs HOW to SET UP Your TractorInstall Seat See Fig Adjust seat before tightening adjustment boltCheck Brake System Assemble Gauge Wheels to Mower Deck See FigCheck Tire Pressure Check Deck LevelnessUnlocked Battery Reverse Forward FastLock Locked Reverse Neutral High LOW Hydro Models onlyKnow Your Tractor HOW to USE Your Tractor To Operate on Hills To Operate Mower See FigTo Transport See Figs Check Engine OIL Level See Fig Before Starting the EngineADD Gasoline To Start Engine See FigPurge Transmission Mowing TipsService Dates Lubrication ChartGeneral Recommendations Before Each USETractor BatteryBrake Operation TiresBelts EngineTransaxle Cooling Transaxle Pump FluidService air cleaner more often under dusty conditions Clean AIR Screen See aAIR Filter See a Engine OIL Filter See BMuffler CleaningSpark Plugs IN-LINE Fuel Filter See FigTo Remove Mower See Fig To Install Mower See FigSIDE-TO-SIDE Adjustment See Figs To Level Mower HousingRaise mower to its highest position Belt Installation To Adjust Brake See FigTo Replace Mower Blade Drive Belt See Fig To Replace Motion Drive Belt See FigFront Wheel TOE-IN/CAMBER To Adjust Steering Wheel ALIGN- MentTo Remove Wheel for Repairs See Fig Block up axle securelyTo Remove Hood and Grill Assembly See Fig To Start Engine with a Weak Battery See FigTo Replace Headlight Bulb Interlocks and RelaysTo Adjust Carburetor See Fig To Adjust Throttle Control Cable See FigPreliminary Setting Final SettingTroubleshooting Points OFF Because of THIS, SchematicElectrical Tractor - Model Number HD145H42GHarness Eng B&S 14 OHV Dual KEY Part DescriptionChassis and Enclosures 74180512 159530 Chassis Wldmt 140356 Drawbar Stretch 1749061274780616 19131312Drive 140607 Steering Assembly 19272016 14004410040600 124035X Support Shaft 126684XSeat Assembly LBD48 Wheels and TiresLSB42 LAO18Engine Muffler Exhaust LT B&S 14HP IC OHV Lift 159460 Wire Asm Inner W/Plunger139868 Arm Suspension Rear 3146R Retainer Spring 140302 73540600 Nut Crownlock 3/8-24Mower Deck Washer Hard Blade Mower Vented 137729 Screw Hex Thd CutWasher 17/32 x 15/16 x 12 Gauge Transaxle Hydro Gear Model Number 75 x 1.25 x 142986 Housing, Lower 15077820 x 142937 Swashplate, Variable 142965 PinService Notes Service Notes Canada contact Service DepartmentBox Orangeburg, SC 29116 USACUT Only Ride UP and Down HillThis OUT Dotted Lines Slope

161608 specifications

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