Poulan Pro 421469, Owner'S Manual

Page: 16 / 40

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