Poulan 437970 owner manual Service and Adjustments, To Adjust Snow Thrower Height, Chute Deflector

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SERVICE AND ADJUSTMENTS

WARNING: To avoid serious injury, before performing any service or adjustments:

1.Be sure the on/off switch is in the OFF position.

2.Remove safety ignition key.

3.Make sure the augers and all moving parts have completely stopped.

4.Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with plug.

SNOW THROWER

TO ADJUST SNOW THROWER HEIGHT

See “TO ADJUST SKID PLATES” and “SCRAPER BAR” in the Operation section of this manual.

CHUTE DEFLECTOR

The chute deflector, attached to the top of the discharge chute, is provided to direct discharging snow away from the operator. If the deflector becomes damaged, it should be replaced.

2.Remove safety ignition key and disconnect spark plug wire from spark plug. Place wire where it cannot come in contact with spark plug.

3.Align holes in impeller hub with holes in impeller shaft and install two (2) new 1/4-20 x 1-5/8" capscrew/shear bolts. Install 1/4-20 locknuts and tighten securely.

CAUTION: Do not substitute. Use only original equipment capscrew/shear bolts as supplied with your snow thrower.

WARNING: To avoid serious injury, never operate your snow thrower with the deflector removed or damaged.

•To change direction and/or distance snow is discharged, see “TO CONTROL SNOW DISCHARGE” in the Op- eration section of this manual.

SHEAR BOLTS (See Fig. 19)

AUGER SHEAR BOLTS

Both right and left-hand augers are secured to the auger shaft with a shear bolt and hex nut. Should a foreign ob- ject or ice become lodged in the augers, the shear bolts are designed to break, preventing damage to any other components. If one or both augers do not turn when auger control lever is engaged, check to see if one or both of the bolts have sheared. To replace the shear bolts:

1.Disengage all controls and move throttle control to STOP position. Wait for all moving parts to stop.

2.Remove safety ignition key and disconnect spark plug wire from spark plug. Place wire where it cannot come in contact with spark plug.

3.Align hole in auger hub with hole in auger shaft and install a new 1/4-20 x 2" shear bolt. Install 1/4-20 lock nut and tighten securely.

CAUTION: Do not substitute. Use only original equipment shear bolts as supplied with your snow thrower.

4.Insert safety ignition key and reconnect spark plug wire to spark plug.

1/4-20

1/4-20 x 1-5/8

1/4-20 x 2

LOCKNUT

CAPSCREW /

SHOULDER /

 

SHEAR BOLT

SHEAR BOLT

 

IMPELLER HUB

 

 

IMPELLER

 

 

SHAFT

 

 

 

AUGER

 

 

HUB

1/4-20

 

 

LOCKNUT

AUGER HUB

AUGER SHAFT

FIG. 19

TO REMOVE BELT COVER (See Fig. 20)

1.Remove the two screws securing belt cover to frame.

2.Remove belt cover.

•Replace belt cover by installing cover and screws and tighten securely.

4.Insert safety ignition key and reconnect spark plug wire to spark plug.

IMPELLER SHEAR BOLTS

The impeller is secured to the impeller shaft with two (2) capscrew/shear bolts and hex nuts. Should a foreign object or ice become lodged in the impeller, the capscrews are designed to break, preventing damage to any other com- ponents. If impeller does not turn when auger control lever is engaged, check to see if the capscrews have sheared. To replace the capscrew/shear bolts:

1.Disengage all controls and move throttle control to STOP position. Wait for all moving parts to stop.

FRAME

BELT COVER

SCREWS

FIG. 20

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Contents Model Number Snow ThrowerSafe Operation Practices for Walk-Behind Snow Throwers Table of Contents Assembly / PRE-OPERATION HOW to SET UP Your Snow ThrowerParts Packed Separately in Carton Remove Snow Thrower from CartonInstall Traction Drive Control ROD See Figs Install Speed Control ROD See FigsUnfold Upper Handle Install Auger Control ROD See Figs Install Discharge Chute / Chute Rotator Head See FigInstall Chute Deflector Remote Control See Figs Check Tire PressureOperation Know Your Snow ThrowerPrimer Ignition KEYMeets A.N.S.I. Safety Requirements Recoil auxiliary starter handle used for starting the engineHOW to USE Your Snow Thrower StoppingTo USE Choke Control See Fig To Control Snow Discharge See FigPower Steering Operation See Fig Using the CLEAN-OUT Tool See FigTo Move Forward and Backward See Fig To Adjust Skid Plates See Fig Before Starting the EngineScraper BAR See Fig Check Engine OIL Level See FigSnow Throwing Tips To Start EngineBefore Stopping If Recoil Starter has FrozenMaintenance Cleaning EngineService and Adjustments To Adjust Snow Thrower HeightChute Deflector Shear Bolts See FigTo Replace Belts See Fig To Adjust Cable Tension See Fig To Remove Wheels See FigCarburetor Engine SpeedStorage OtherFuel System Engine OILTroubleshooting Service Notes Exploded KEY Part Description Tool ClipAuger Housing Scrapper BARCARRIAGEBOLT5/16−18X.625 Auger 30 LHAuger Bearing Bearing PlugSkid Plate LH Skid Plate RHDeflector Control Assembly Chute WeldmentDeflector Weldment Deflector SealLEVER/CABLE Rotator Assembly Cable Assembly AdjustableRotator Head Rotator Pivot BracketRepair Parts Snow Thrower Model XT11530ES Handles Loop Handle LHLoop Handle RH Lower Handle180480 Impeller RODTraction ROD RetainerRepair Parts SpacerKnob RED Handle KnobWire Harness Interlock SpringInterlock CAM Torsion SpringRepair Parts Snow Thrower Model XT11530ES Drive Speed Selector Axle Shaft SprocketThrust Washer BearingEngine Model Frame436146X505 Engine Mount Plate428684 KEY Repair Parts Snow Thrower Model XT11530ES WheelsPart Description 432337X428 Wheel Assembly LH432338X428 Safety Ignition KEY Repair Parts Snow Thrower Model XT11530ES BAG of Parts193071 435840 KIT Harness Conn B&SRepair Parts Snow Thrower Model XT11530ES Decals 181037DECAL, Danger DECAL, DANGER, DeflectorService Notes Service Notes Limited Warranty

96192003503, 437970 specifications

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