Poulan PR20PH42STB Tractor, Brake Operation, Tires, Operator Presence System, Blade Care, Battery

Models: PR20PH42STB

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TRACTOR

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 Adjust- ments section of this manual).

TIRES

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

Keep tires free of gasoline, oil, or insect control chemicals 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

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.

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.

Be sure operator presence and interlock systems are

• Slide blade on to an unthreaded portion of the steel bolt

working properly. If your tractor does not function as

or pin and hold the bolt or pin parallel with the ground. If

described, repair the problem immediately.

blade is balanced, it should remain in a horizontal

• The engine should not start unless the brake pedal is

position. If either end of the blade moves downward,

fully depressed and attachement clutch control is in the

sharpen the heavy end until the blade is balanced.

disengaged position.

 

CENTER

• When the engine is running, any attempt by the

 

 

HOLE

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

5/8" BOLT

BLADE

is engaged, any attempt by the operator to leave the

 

OR PIN

 

seat should shut off the engine.

 

 

The attachment clutch should never operate unless the

operator is in the seat.

 

 

FIG. 13

BLADE CARE

 

 

 

 

BATTERY

For best results mower blades must be kept sharp. Replace

Your tractor has a battery charging system which is suffi-

bent or damaged blades.

 

 

SIDE UP" facing deck and mandrel assembly.

cient for normal use. However, periodic charging of the

BLADE REMOVAL (See Fig. 12)

 

 

battery with an automotive charger will extend its life.

 

 

• Keep battery and terminals clean.

• Raise mower to highest position to allow access to

• Keep battery bolts tight.

blades.

 

 

 

 

• Keep small vent holes open.

• Remove hex bolt, lock washer and flat washer securing

• Recharge at 6-10 amperes for 1 hour.

blade.

 

 

 

 

 

• Install new or resharpened blade with trailing edge up

NOTE: The original equipment battery on your tractor is

towards deck as shown.

 

 

maintenance free. Do not attempt to open or remove caps or

 

 

 

covers. Adding or checking level of electrolyte is not neces-

TRAILING

MANDREL

sary.

EDGE UP BLADE

ASSEMBLY

 

CENTER

TO CLEAN BATTERY AND TERMINALS

Corrosion and dirt on the battery and terminals can cause the

HOLE

FLAT WASHER

battery to “leak” power.

Remove terminal guard.

 

LOCK WASHER

Disconnect BLACK battery cable first then RED battery

STAR

 

cable and remove battery from tractor.

 

 

 

• Rinse the battery with plain water and dry.

HEX BOLT (GRADE 8)*

• Clean terminals and battery cable ends with wire brush

 

until bright.

*A GRADE 8 HEAT TREATED BOLT CAN BE

• Coat terminals with grease or petroleum jelly.

IDENTIFIED BY SIX LINES ON THE BOLT HEAD.

• Reinstall battery (See “REPLACING BATTERY" in the

 

FIG. 12

17

SERVICE AND ADJUSTMENTS section of this manual).

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Poulan PR20PH42STB Tractor, Brake Operation, Tires, Operator Presence System, TO SHARPEN BLADE See Fig, Blade Care