Poulan PR20H42STA Tractor, Brake Operation, Tires, Operator Presence System, Blade Care

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CUSTOMER RESPONSIBILITIES

TRACTOR

Always observe safety rules when performing any mainte- nance.

BRAKE OPERATION

If tractor requires more than six (6) feet stopping distance at high speed in highest gear, then brake must be adjusted. (See “TO ADJUST BRAKE” in the Service and Adjustments section of this manual).

TIRES

Maintain proper air pressure in all tires (See “PRODUCT SPECIFICATIONS” section of this manual).

Keep tires free of gasoline, oil, or insect control chemi- cals which can harm rubber.

Avoid stumps, stones, deep ruts, sharp objects and other hazards that may cause tire damage.

NOTE: To seal tire punctures and prevent flat tires due to slow leaks, tire sealant may be purchased from your local parts dealer. Tire sealant also prevents tire dry rot and corrosion.

OPERATOR PRESENCE SYSTEM

Be sure operator presence and interlock systems are work- ing properly. If your tractor does not function as described, repair the problem immediately.

The engine should not start unless the clutch/brake pedal is fully depressed and attachement clutch control is in the disengaged position.

When the engine is running, any attempt by the operator to leave the seat without first setting the parking brake should shut off the engine.

When the engine is running and the attachment clutch is engaged, any attempt by the operator to leave the seat should shut off the engine.

The attachment clutch should never operate unless the operator is in the seat.

BLADE CARE

For best results mower blades must be kept sharp. Replace bent or damaged blades.

BLADE REMOVAL (See Fig. 12)

Raise mower to highest position to allow access to blades.

Remove hex bolt, lock washer and flat washer securing blade.

Install new or resharpened blade with trailing edge up towards deck as shown.

IMPORTANT: TO ENSURE PROPER ASSEMBLY, CENTER HOLE IN BLADE MUST ALIGN WITH STAR ON MANDREL ASSEMBLY.

Reassemble hex bolt, lock washer and flat washer in exact order as shown.

Tighten bolt securely (27-35 Ft. Lbs. torque).

IMPORTANT: BLADE BOLT IS GRADE 8 HEAT TREATED.

TRAILING

MANDREL

ASSEMBLY

EDGE UP

 

BLADE

 

 

CENTER

 

HOLE

LOCK WASHER

STAR

FLAT WASHER

HEX BOLT (GRADE 8)*

*A GRADE 8 HEAT TREATED BOLT CAN BE

IDENTIFIED BY SIX LINES ON THE BOLT HEAD.

FIG. 12

TO SHARPEN BLADE (See Fig. 13)

NOTE: We do not recommend sharpening blade - but if you do, be sure the blade is balanced.

Care should be taken to keep the blade balanced. An unbalanced blade will cause excessive vibration and even- tual damage to mower and engine.

The blade can be sharpened with a file or on a grinding wheel. Do not attempt to sharpen while on the mower.

To check blade balance, you will need a 5/8" diameter steel bolt, pin, or a cone balancer. (When using a cone balancer, follow the instructions supplied with balancer).

NOTE: Do not use a nail for balancing blade. The lobes of the center hole may appear to be centered, but are not.

Slide blade on to an unthreaded portion of the steel bolt or pin and hold the bolt or pin parallel with the ground. If blade is balanced, it should remain in a horizontal position. If either end of the blade moves downward, sharpen the heavy end until the blade is balanced.

CENTER HOLE

5/8" BOLT

BLADE

OR PIN

 

FIG. 13

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Contents PR20H42STA Safety Rules Safety Rules Table of Contents Steering Wheel Seat Unassembled PartsSlope Sheet Assembly Tools Required for AssemblyHOW to SET UP Your Tractor To Remove Tractor from CartonInstall Seat See Fig To SET UP Your Mower for MulchingTo Convert to Bagging or Discharging Check Tire PressureCheck Deck Levelness Check for Proper Position of ALL BeltsOperation Know Your Tractor Motion Control Lever Selects the speedHOW to USE Your Tractor To Adjust Gauge Wheels See Fig To Operate Mower See FigTo Operate on Hills To Transport See FigsBefore Starting the Engine Check Engine OIL Level See FigADD Gasoline To Start Engine See FigMowing Tips Mulching Mowing Tips¿ Lubrication Chart Customer ResponsibilitiesGeneral Recommendations Before Each USETractor Brake OperationTires Operator Presence SystemEngine Clean AIR INTAKE/COOLING Areas CleaningMuffler Spark PlugsService and Adjustments To Install Mower See FigTo Level Mower Housing To Remove Mower See FigRecheck side-to-side adjustment To Adjust Brake See Fig Belt InstallationTo Replace Mower Blade Drive Belt See Fig To Replace Motion Drive Belt See FigTransmission REMOVAL/REPLACEMENT Transaxle Motion Control Lever Neutral Adjustment See FigTo Adjust Steering Wheel Alignment Front Wheel TOE-IN/CAMBERTo Start Engine with a Weak Battery See Fig Replacing Battery SeeTo Replace Headlight Bulb To Attach Jumper CablesInterlocks and Relays To Adjust CarburetorTo Replace Fuse Storage OtherFuel System Engine OILTroubleshooting Points OFF Service Notes Schematic Tractor - Model Number PR20H42STAElectrical KEY Part Description Chassis Screw Hex Wshd 8-18 x 7/8 Drive Transaxle Hydro Gear Steering Assembly KEY Part NO. NO.DESCRIPTION Seat Assembly Decals Wheels and TiresEngine Optional Equipment Spark ArresterEngine 141295 Control ThrotMower Deck Repair Parts Mower Lift 159460 Wire Asm Inner/Sprg W/plunger LT Limited Warranty Suggested Guide for Sighting Slopes for Safe Operation Only Ride UP and Down Hill Not Across Hill Degrees MAXParts and Service