Sears Craftsman 536.885921 Owner’s Manual página 21

S RVIC
D ADJUSTME TS
TRACTION DRIVE BELT
If your snow thrower will not move forward, check the
traction drive belt for wear, If the traction drive belt
needs to be replaced, proceed as follows:
® Disconnect the spark plug wire,
• Remove the belt cover (See Fig, 28 on page 20)
e Loosen belt guides (See Fig 29) and pull belt
guides away from the engine drive pulley.
e Loosen nut on auger idler and pull auger idler pulley
away from belto
® Remove auger drive belt from engine pulley,
e Pull drive belt idler pulley away from ddve belt
® Remove drive belt
e Position new drive belt onto traction pulley
® Pul! idler pulley away from belt, allowing beit to be
positioned onto engine pulley.
e ReSease idJerpuJley Ensure _Jer puJJeyis properly
engaged with belt,
o Reinstall auger drive belt,
• Adjust belt guides (see To Adjust The Belt Guides
paragraph below),
® Adjust idler on auger belt,
e Reinstall the belt cover
o Reconnect the spark plug wire,
"1"OADJUST THE BELT GUIDES
Alter you replace a track or auger drive belt, you need to
adjust one or both of the belt guides Proceed as lollows:
• Disconnect the spark plug wire.
e Remove the belt cover (See Fig 28 on page 20)
e Engage the auger drive clutch lever
• Measure the distance between the belt guides and
the belt (See Fig 30 on page 20) The distance
should be 3/32" for each guide
o it adiustment is necessary, loosen the belt guide
mounting bolts Move the belt guides to the correct
position., Tighten the mounting bolts
• Reinstall the belt cover,
• Reconnect the spark plug wire
FIG., 31
REMOVE BOLT,
LOOSEN BOLT,
TO ADJUST THE FRICTION WHEEL
If the snow thrower will not move forward, you need to
check the track drive belt, the traction drive cable or the
friction wheel If the friction wheel is damaged, it will need
to be replaced, See the To Replace Friction Wheel
paragraph on page 22 If the friction wheel is not worn,
check the adjustment, as follows:
e Disconnect the spark plug wire,
e Drain the gasoline from the gas tank
® Standsnow thrower on the auger housing end
® Remove the bottom panel (See Fig. 31),
® Position the shifter lever in first (1) forward gear
e Note the position of the friction wheel on the disc
drive plate,, The right outer side of the disc drive plate
should be 3" from the center of the friction wheel (See
Fig 32)
;I adjustment is necessary:
e Loosen nut "A" on the speed select rod Removethe
ball joint by removing nut "B" from the shift yoke
assembly Lengthen or shortenthe rod by turning the
adaptor to obtain the correct friction wheel position
(See Fig 33),
e Reinstall the ball joint and nut "B" Tighten nut "A"
• Reinstall the bottom panel
FRICTION DISC DRIVE
PLATE
FIG,, 32
21
SPEED SELECT
ROD
NUT"A"
ADAPTOR
BALL JOINT
FIG, 33
YOKE
ASSEMBLY