Transmission Poly-V Belt Replacement - Snapper 16 Series Safety Instructions And Operator's Manual

Section 4 - REPAIR & ADJUSTMENTS
WARNING
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secure
away from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time for all
components to cool.
4.4.1. Engine Drive Belt Replacement
(Stretch Type Belts)
(Continued From Previous Page)
4.4.2. Transmission Poly-V Belt Replacement
1. Remove the driven disc. Refer to Section on
"Replacing Driven Disc Rubber Ring" for procedure.
2. Note the routing of the old belt around the three
pulleys before removing it. See Figure 4.18.
3. Place new Poly-V Belt over end of hex shaft and
onto driven pulley.
4. Work belt onto top of idler pulley.
5. Twist belt sideways and pull it upward between
the differential bracket and drive pulley and then
down into the pulley groove. Make sure the Poly-V
Belt is above belt guide. See Figure 4.18.
IMPORTANT: DO NOT tip machine with carburetor or
spark plug down. Oil from crankcase will saturate the air
filter and cause the engine to be hard to start or not start at DRIVE
PULLEY ,
all. If contamination does occur, the air filter will have to be
replaced.
IDLER
3. Remove the driven disc. Refer to Section
"Replacing Rubber Driven Disc Ring" for driven disc
assembly removal procedure.
4. Tilt mower up on its rear wheels and remove
blade and blade hub. Assistance from another
person may be necessary to hold mower in the tilted
position.
5. Hold the slotted end of the drive disc bolt with a BELTGUIDE
screwdriver and remove the nut and internal tooth
lock washer. See Figure 4.17.
6. Remove the belt cover located under deck.
7. Lift the drive disc up and remove worn belt.
8. Loop one end of new belt over engine pulley and
insert the other end through slot in deck. See Figure
4.16.
PULLEY POSITION
DRIVEN
PULLEY
ROUTING OF POLY-V BELT
FIGURE 4.18
DRIVE DISC
SLOT IN END L _ BUSHING
OF DRIVE DISC.
BOLT
DECK BRACKET
(PARTIALLY SHOWN)'_
BOLT RETAINER
D
FIGURE 4.17
17