Section Iii - Maintenance - Snapper 4220 Series Safety Instructions And Operator's Manual

Section III - MAINTENANCE
3.1 LUBRICATION SERVICES
Refer to the Engine Manual for lubrication
requirements on the engine powering your SNOW
THROWER. Your SNOW THROWER unit has five
(5)grease fittings, two (2) on the augers, one (1) in
the gearbox housing and two (2) on the auger shaft
bearings as shown in Figure 3.1. Service these and
the other general lube points as follows:
FIGURE 3.1
3.2 AUGER LUBRICATION:
ONCE EACH YEAR,
preferably at the end of the winter season, remove
the two (2) shear bolts, apply grease to the fittings,
then spin the auger to work the grease out along the
auger shaft. Continue greasing and spinning augers
until grease appears at both ends of each auger
tube. Reinstall shear bolts and nuts after servicing.
This procedure will prevent the auger shaft from
rusting to the auger tube.
3.3 BEARING LUBE:
ONCE EACH YEAR, apply one
or two shots of grease from gun to the bearing
greasq fittings located at the ends of the auger
shaft, just inside the blower housings.
3.4 GENERAL LUBE POINTS:
ONCE EACH YEAR, or
more often if rust hampers operation, spread a light
coating of grease on the chute crank worm and on
the underside of the gear ring at the base of the
discharge chute. Squirt oil from the oil can into the
gap between the inside of the discharge chute and
the outside of the discharge flange of the blower
housing. Crank chute back and forth while oiling to
spread lubrication evenly over both surfaces.
Although not absolutely necessary, you may want to
remove, each wheel at the end of the season and
apply a coating of grease on the axle shafts. This
will help to prevent rust and allow the wheels to be
moved more easily from transport to traction mode
during the next season.
3.5 GEARBOX LUBRICATION:
Grease ONCE EACH
YEAR, or more often as required, with 5 shots of
SNAPPER
"00" grease. See Figure 3.2.
FIGURE 3.2
3.6 CHUTE CRANK SERVICE
If the chute does not crank easily after lubricating,
as specified under
GENERAL LUBE POINTS,
loosen
both nuts on the outside of the crank worm bracket
as shown in Figure 3.3 and move the bracket
slightly away from the chute gear or back in toward
the ring until the chute again cranks with minimum
effort. Retighten inside nut first, then jam the
outside nut tight against the inside nut to lock at the
new setting.
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