Poulan 438706, 96042012400 manual Engine

Page 16

MAINTENANCE

V-BELTS

Check V-belts for deterioration and wear after 100 hours of operation and replace if necessary. The belts are not adjustable. Replace belts if they begin to slip from wear.

TRANSAXLE MAINTENANCE

The transmission fan and cooling fins should be kept clean to assure proper cooling.

Do not attempt to clean fan or transmission while engine is running or while the transmission is hot. To prevent pos- sible damage to seals, do not use high pressure water or steam to clean transmission.

Inspect cooling fan to be sure fan blades are intact and clean.

Inspect cooling fins for dirt, grass clippings and other materials. To prevent damage to seals, do not use compressed air or high pressure sprayer to clean cooling fins.

TRANSAXLE PUMP FLUID

The transaxle was sealed at the factory and fluid mainte- nance is not required for the life of the transaxle. Should the transaxle ever leak or require servicing, contact your nearest authorized service center/department.

ENGINE

LUBRICATION

Only use high quality detergent oil rated with API service classification SG-SL. Select the oil’s SAE viscosity grade according to your expected operating temperature.

SAE VISCOSITY GRADES

 

 

 

 

 

 

 

 

 

 

SAE 30

 

 

 

 

 

 

5W-30

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

F

-20

0

 

 

30 32 40

 

60

80

100

C

-30

-20

-10

0

10

20

30

40

TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE

Fig. 16

NOTE: Although multi-viscosity oils (5W30, 10W30 etc.) improve starting in cold weather, they will result in increased oil consumption when used above 32°F. Check your engine oil level more frequently to avoid possible engine damage from running low on oil.

Change the oil after every 50 hours of operation or at least once a year if the tractor is not used for 50 hours in one year.

Check the crankcase oil level before starting the engine and after each eight (8) hours of operation. Tighten oil fill cap/dipstick securely each time you check the oil level.

TO CHANGE ENGINE OIL (See Fig. 17)

Determine temperature range expected before oil change. All oil must meet API service classification SG-SL..

Be sure tractor is on level surface.

Oil will drain more freely when warm.

Catch oil in a suitable container.

Remove oil fill cap/dipstick. Be careful not to allow dirt to enter the engine when changing oil.

Remove yellow cap from end of drain valve and install the drain tube onto the fitting.

Unlock drain valve by pushing inward and turning counterclockwise.

To open, pull out on the drain valve.

After oil has drained completely, close and lock the drain valve by pushing inward and turning clockwise until the pin is in the locked position as shown.

Remove the drain tube and replace the cap onto to the bottom fitting of the drain valve.

Refill engine with oil through oil fill dipstick tube. Pour slowly. Do not overfill. For approximate capacity see “PRODUCT SPECIFICATIONS” section of this manual.

Use gauge on oil fill cap/dipstick for checking level. Be sure dipstick cap is tightened securely for accurate reading. Keep oil at “FULL” line on dipstick. Tighten cap onto the tube securely when finished.

OIL DRAIN VALVE

CLOSED AND

LOCKED

POSITION

DRAIN

TUBE

YELLOW

CAP

Fig. 17

ENGINE OIL FILTER

Replace the engine oil filter every season or every other oil change if the tractor is used more than 100 hours in one year. See engine manual.

AIR FILTER

Your engine will not run properly using a dirty air filter. Service air cleaner more often under dusty conditions. See Engine Manual.

CLEAN AIR SCREEN

Air screen must be kept free of dirt and chaff to prevent engine damage from overheating. Clean with a wire brush or compressed air to remove dirt and stubborn dried gum fibers.

ENGINE COOLING SYSTEM

To ensure proper cooling, make sure the grass screen, cooling fins, and other external surfaces of the engine are kept clean at all times.

Every 100 hours of operation (more often under extremely dusty, dirty conditions), remove the blower housing and other cooling shrouds. Clean the cooling fins and external surfaces as necessary. Ensure the cooling shrouds are reinstalled.

NOTE: Operating the engine with a blocked grass screen, dirty or plugged cooling fins, and/or cooling shrouds removed will cause engine damage due to overheating.

MUFFLER

Inspect and replace corroded muffler and spark arrester (if equipped) as it could create a fire hazard and/or damage.

16

Image 16
Contents PB20H42YT Safety Rules Safe Operation Practices for Ride-On MowersGeneral Operation II. Slope OperationService General ServiceIII. Children IV. TowingTable of Contents Tools Required for Assembly Unassembled PartsTo Remove Tractor from Carton Before Removing Tractor from SkidAssembly Check Tire PressureCheck Deck Levelness Check for Proper Position of BeltsOperation Know Your Tractor HOW to USE Your Tractor To SET Parking Brake See FigStopping See Fig To USE Throttle Control See FigTo Adjust Mower Cutting Height See Fig To Adjust Gauge Wheels See FigReverse Operation System ROS To Operate MowerBefore Starting the Engine Purge Transmission To Start Engine See FigAutomatic Transmission Warm UP Mowing Tips Maintenance MaintenanceGeneral Recommendations ScheduleTractor BatteryBlade Removal See Fig Engine Cleaning Spark PlugsIN-LINE Fuel Filter See Fig Deck Washout Port See FigTo Install Mower See Fig Service and AdjustmentsTo Remove Mower See Fig Install belt on engine pulley M, in belt keepers G To Level Mower Belt Installation To Replace Mower Blade Drive Belt See FigTo Check Brake To Replace Motion Drive Belt See FigTransaxle Motion Control Lever Neutral Adjustment See Fig To Start Engine with a Weak Battery See FigFront Wheel TOE-IN/CAMBER To Remove Wheel for Repairs See FigTransmission Storage OtherFuel System Engine OILTroubleshooting Problem Cause CorrectionTroubleshooting Points Suggested Guide for Sighting Slopes for Safe Operation Only Ride UP and Down Hill Not Across Hill Degrees MAXLimited Warranty