Poulan Pro 421469, Owner'S Manual

15

CAUTION: Do not substitute. Use only original 

equip ment capscrew/shear bolts as sup plied 

with your snow thrower.

4.  Connect spark plug wire to spark plug.  Replace safety 

ignition key.

WARNING: To avoid serious injury, before performing any service or ad just ments:

1.  Be sure throttle is in STOP position.

2.  Remove safety ignition key.

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

4.  Remove safety ignition key and disconnect spark plug wire from spark plug.  Place wire where  

 it 

can 

not contact plug.

SERVICE AND ADJUSTMENTS

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 re placed.

WARNING: To avoid serious injury, 

nev er operate your snow thrower with 

the deflector removed or damaged.

• 

To change direction and/or distance snow is dis charged, 

see “TO CONTROL SNOW DISCHARGE” in the Op -

er a tion 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 shoulder/shear bolt and hex nut. Should a for-

eign object or ice become lodged in the augers, the shear 

bolts are designed to break, preventing damage to any 

other com po nents. 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 plug.

3.  Align hole in auger hub with hole in auger shaft and install 

a new 1/4-20 x 2" shoulder/shear bolt and spacer. Install

1/4-20 lock nut and tighten securely.

CAUTION: Do not sub sti tute. Use only original 

equip ment shear bolts as sup plied with your 

snow thrower.

4.  Connect spark plug wire to spark plug.  Replace safety 

ignition key.

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 

de signed to break, preventing damage to any other com -

po nents. 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.

2.  Remove safety ignition key and disconnect spark plug 

wire from spark plug.  Place wire where it cannot come 

in contact with 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.

BELT COVER

SCREWS

FRAME

FIG. 20

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.

AUGER SHAFT

1/4-20 x 2

SHOULDER /

SHEAR BOLT

1/4-20 

LOCK NUT

IMPELLER 

SHAFT

1/4-20 x 1-5/8

CAPSCREW / 

SHEAR BOLT

1/4-20

LOCKNUT

IMPELLER HUB

AUGER 

HUB

AUGER HUB

FIG. 19

SPACER

TO REPLACE BELTS (See Fig. 22)

The auger and traction drive belts are not adjustable. If the 

belts are damaged or begin to slip from wear, they should 

be replaced. It is recommended that the belt(s) be replaced 

by a authorized service centre/department.

NOTE:

 It is recommended that both the auger and traction 

drive belt be replaced at the same time.
The V-belts on your snow thrower are of special con struc tion 

and should be replaced by original equipment man u fac tur er 

(OEM) belts avail able from your nearest authorized service 

centre/department. Using other than OEM belts can cause 

personal injury or damage to the snow thrower.