Poulan Pro 421469, Owner'S Manual

16

SERVICE AND ADJUSTMENTS

WARNING: Belt replacement requires 

separation of the snow thrower. While 

separating the auger housing from the 

frame assembly, it is important that 

an assistant stand in the operating 

po si tion and hold the snow thrower 

han dles. Serious personal injury and/

or damage to the unit could occur if the 

snow thrower should fall during the belt 

chang ing process.

FRAME

ASSEMBLY

AUGER 

HOUS ING

HANDLES

1.  REMOVE GASOLINE FROM FUEL TANK - Drain gaso-

line from fuel tank into a suitable container, out doors, 

away from fire or flame. Wipe up any spilled gasoline.

2.  REMOVE DISCHARGE CHUTE - Loosen locknut 

se cur ing chute rotator head to mounting bracket only 

enough to allow chute rotator head to be raised and 

dis charge chute to be removed from snow thrower.

3.  REMOVE BELT COVER - See “TO REMOVE BELT 

COVER” in this section of this manual.

4.  REMOVE ENGINE PULLEY - Remove bolt, lock wash er 

and flat washer securing pulley to engine crankshaft.  

Remove outside (auger) pulley only from crank shaft.

5.  SEPARATE SNOW THROWER - With your assistant 

standing in the operating position holding the handles, 

re move the two (2) bolts holding the auger housing and 

frame together.

WARNING: As the last bolt is removed, 

have your assistant carefully lower the 

han dles down to the ground.

6.  REMOVE HAIRPIN FROM CLUTCH ROD and remove 

clutch rod from swing plate.  Tip swing plate forward.

7.  REMOVE AUGER BELT from around pulley.
8.  RELIEVE TENSION ON TRACTION DRIVE BELT 

IDLER and remove traction drive belt from around 

pulleys.

HINT:

 Insert a 3/8" drive ratchet (in the “ON” position) into 

the square hole in idler arm and rotate ratchet clockwise 

to relieve tension.
9.  With tension relieved on idler, install new traction drive 

belt around pulleys and inside belt keepers.

10.  Install clutch rod in swing plate; secure with hairpin.

11.  Place auger belt around and inside the groove of auger 

pulley only.

12. While your assistant slowly raises handles to rejoin 

the auger hous ing and frame assembly, pull up on the 

auger belt and squeeze sides together above pulley 

so belt is fully seated in groove of pulley.

13.  Move idler arm so it does not hit impeller pulley as you 

bring snow thrower completely together and check 

carefully for proper routing of belts.  If auger belt has 

become dislodged from the pulley (by catching the idler 

arm bracket while bringing snow thrower together), 

separate the snow thrower and re peat step 12.  Belt 

must be fully seated in pulley groove when bring ing 

the snow thrower together.

14.  Install the two (2) hex bolts and tighten securely.
15.  INSTALL ENGINE PULLEY - Place belt in pulley groove 

and slide pulley on crankshaft.  Install flat washer, 

lockwasher and bolt and tighten securely (41-47 N-m 

torque).  Make sure belt is inside belt keeper.

16. INSTALL BELT COVER and two (2) screws. Tighten 

securely.

17.  INSTALL DISCHARGE CHUTE – See “INSTALL DIS -

CHARGE CHUTE / CHUTE ROTATER HEAD” in the 

As sem bly / Pre-Operation section of this manual.

FIG. 22

BELT KEEPER

IDLER ARM 

SQUARE 

HOLE

BOLTS

TRACTION DRIVE BELT

CLUTCHING 

IDLER ARM 

BRACKET

AUGER 

BELT

FLAT WASHER

AUGER PULLEY

AUGER

HOUSING

FRAME

ENGINE

PULLEY

LOCKWASHER

BOLT