Cub Cadet 421R - Manual (Page 9)

9
SECTION 5: MAKING ADJUSTMENTS
WARNING: NEVER attempt to make any
adjustments while the engine is running, except
where specified in the operator’s manual.
Shave Plate
• To check the adjustment of the shave plate, place
the unit on a level surface. See Figure 12. The
wheels, shave plate and augers should all contact
level surface. Note that if the shave plate is
adjusted too high, snow may blow under the
housing. If the shave plate wears out excessively,
or the unit will not self-propel, the shave plate may
be adjusted too low.
NOTE: On new units or units with a new shave plate
installed, the augers may be slightly off the ground.
Figure 12
• To adjust, tip the snow thrower back so that it rests
on the handle. Loosen the lock nuts and bolts which
secure the shave plate to the housing. See Figure
13. Move the shave plate to desired position and
retighten the nuts and bolts. Make certain all nuts
and bolts are tightened securely.
Figure 13
Belt Tension
Periodic adjustment of the belt tension may be required
due to normal stretch and wear on the belt. If augers
hesitate while turning although engine maintains same
speed, adjust tension following instructions below.
• The upper hole in the control handle provides
adjustment for belt tension. To adjust, disconnect
the “Z” end of control cable from the bottom hole in
the control handle. See Figure 14 . Hook the cable
into the upper hole in control handle as shown here.
Figure 14
If additional adjustment is required, follow steps below.
• Remove the belt cover by removing five hex screws
that hold it in place. See Figure 16.
• There are three adjustment holes provided in the
idler bracket assembly. See Figure 15. To adjust,
move the extension spring on the end of the clutch
cable to the next higher adjustment position on the
idler bracket assembly. Reassemble belt cover.
Figure 15
Carburetor
WARNING: If any adjustments need to be
made to the engine while the engine is running
(e.g. carburetor), keep clear of all moving
parts. Be careful of muffler, engine and other
surrounding heated surfaces.
• Refer to the separate engine manual, packed with
your unit, for carburetor adjustment information.
Augers Shave Plate Wheels
Nuts & Bolts
Upper
Hole
Clutch
Cable
Control
Housing
Auger
Pulley
Idler
Bracket
Spring on
End of Clutch
Cable
High Position
Middle Position
Low Position