Snapper 21500 User Manual

BEARING REPLACEMENT: If the driven disc bearing
fails, remove the complete driven disc assembly as
previously described. Then remove the snap ring (H)
(special pliers are required) and slide the driven disc
assembiy out of bearing.
Remove the four retaining scre\ws (I) and then the
bearing (J). Reassemble in reverse order. Refer to the
illustration FIG. 16.
To replace the bearing on puiiey end of hex-shaft,
hoid the shaft with an adjustable wrench (next to the
pulley). Then remove the 3/8" retaining hex iock nut
(located on outside of right rear wheel bracket).
Carefully remove holder, 0-ring, and bearing and
replace the bearing. Reassembie and carefuily
reinstail the 0-ring over the outside of new bearing
-securely tighten the two retaining screws as shown
in FIG. 16-A.
FIG. 16-A - BEARING REPLACEMENT
BELT SERVICE
Slippage (from worn beits) can prevent self-
propeiled modeis from maintaining optimum perfor¬
mance! On self-propelled models, the engine belt
transmits power to the Poly-V-Belt, which in turn,
engages the ciutch to drive the transmission and
rear drive wheeis.
ENGINE BELT REPLACEMENT: Disconnect the
spark plug wire and empty the fuei tank (or tape the
vents in the filler cap closed to prevent fuel spillage).
Unhook the idler arm spring (A) from the right rear
wheel bracket and remove the driven disc assembly as
described in the DRIVEN DISC SECTION. Tilt the
mower up on its LEFT wheels and remove the cutting
blade and hub. Then, while holding the slotted end of
the drive disc with a screwdriver, remove the drive disc
retaining nut (B) and internal tooth lockwasher (C). Lift
the drive disc up from its position on the idler arm and
remove worn belt. Loop one end of replacement belt
over engine drive pulley and insert other end through
deck opening. Loop the belt around driven pulley (on
the lower portion of drive disc) and lower disc back into
position on idler arm. Make sure to reassemble
components as shown in FIG. 17.
Reinstall the internal tooth lock washer (C) and re¬
taining nut (B) onto drive disc post (on underside of
deck), and securely tighten. Test the pivoting action
of the idler arm - it must pivot freely! Reinstall the
blade and fasteners on shaft as explained in the
BLADE SERVICE section. Use a stiff wire (such as a
coat hanger).with a hook on end to pull the hooked
end of idler arm spring (A) through the large hole in
right wheel bracket, and then hook the spring’s end
through the smaller hole. If the Poly-V-Belt is NOT
going to be replaced, reinstall the driven disc
assembly. 10
FIG. 17 -IDLER & ENGINE BELT DETAIL
RIGHT REAR
WHEEL BRACKET
DRIVE DISC
ENGINE
DRIVE
PULLEY

Snapper 21500 Specifications

General

Brand	Snapper
Model	21500
Category	Lawn Mower
Language	English