Cub Cadet 421R - Manual (Page 10)

10
SECTION 6: MAINTAINING YOUR SNOW THROWER
WARNING: Before servicing, repairing, or
inspecting, disengage all clutch levers and
stop engine. Wait until all moving parts have
come to a complete stop. Disconnect spark
plug wire and ground it against the engine to
prevent unintended starting.
General Recommendations
• Always observe safety rules when performing any
maintenance.
• All adjustments explained on page 9 should be
checked at least once each season.
• Periodically check all fasteners and make sure
these are tight
• Follow the maintenance schedule given below to
get quality performance from your snow thrower for
a long time.
Replacing Belt
• Remove the belt cover by removing five hex
screws. See Figure 16.
Figure 16
• Pull up on the idler pulley and slip the belt off the
engine pulley.
• Push down on the idler pulley and slip the belt off
the auger pulley.
• Reassemble new belt. See Figure 17.
• Reinstall the belt cover.
Figure 17
Replacing Shave Plate
The shave plate is subject to wear. It should be
checked periodically. There are two wearing edges and
the shave plate can be reversed. See Figure 13.
• Remove the four carriage bolts and hex lock nuts
which attach it to the snow thrower housing.
• Install new shave plate, making sure the heads of
the carriage bolts are on the inside of the housing.
• Adjust the shave plate according to procedure in
the “Making Adjustments” section of this manual.
• Tighten securely.
Hex
Screws
Belt Cover
Auger
Pulley
Idler Pulley
Engine
Pulley
Belt
Customer Responsibilities
MAINTENANCE SCHEDULE
P
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IN
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SERVICE DATES
B
e
fo
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ac
h
u
se
A
ft
er
e
ac
h
u
se
E
ve
ry
2
5
h
ou
rs
B
ef
or
e
st
or
a
ge
O
nc
e
a
s
e
as
o
n
Lubricate pivot points
Clean snow thrower
Check shave plate
Check belt
Clean engine
Check spark plug