Cub Cadet 450 Serie Manual Del Operacion página 9

Disconnect the spark plug wire and ground it against the engine before
performing any maintenance or repairs.
Maintenance
Engine
Refer to the separate Engine Operator's Manual for engine
maintenance instructions.
Tires
Recommended operating tire pressure is approximately 20 p.s.i. on 16 inch tires.
(Check the sidewall of the tire for the manufacturer's recommended pressure).
Maximum tire pressure under any circumstances is 30 p.s.i. Equal tire pressure
should be maintained on both tires.
Excessive pressure (over 30 p.s.i.) when seating beads may cause the tire/
rim assembly to burst with force sufficient to cause serious injury.
Tines
Clean the underside of the tine shield after each use. The dirt washes off the
tines easier if rinsed off immediately instead of after it dries. Always towel dry
the tiller afterwards and apply a light coat of oil or silicone to prevent rusting or
water damage.
NOTE: Never use a "pressure washer" to clean your tiller. Water can
penetrate tight areas of the tiller and its chain case and cause serious
damage to the tiller.
Lubrication
Transmission
The transmission is pre-lubricated and sealed at the factory. It requires no checking
unless the transmission is disassembled. To fill with grease, lay the right half of
the transmission on its side, add 22 ounces of Benalene 920 grease, and assemble
the left half to it. This grease can be obtained at your nearest authorized dealer by
ordering part number 737-0300 or calling the Customer Support number found in the
separate supplement.
Clutch Handle
Lubricate the pivot point on the clutch handle and the cable at least once a season
with light oil. The control must operate freely in both directions.
Pivot Points
Lubricate all the pivot points and linkages at least once a season with light oil.
Tine Shafts
Remove the tine assemblies and lubricate the tine shafts at least once a season.
Wheel Shafts
Remove the wheel assemblies and lubricate the axle shafts at least once a season.
Adjustments
Never attempt to make any adjustments while the engine is running,
except where specified in the Operator's Manual.
WARNING
WARNING
WARNING
SERVICE
Engine Adjustment
Refer to the separate Engine Operator's Manual for engine adjustment instructions.
Clutch Cable
Refer to the Assembly & Set-Up section of this manual for instructions on adjusting
the clutch cable.
Idler Pulley Rod
After the belt tension has been adjusted, if the belt is excessively stretched, you may
need to adjust the idler pulley rod. This can be checked easily.
With the engine off and the clutch control bail disengaged, shift the gear selection
handle to each forward mode. If the indicator bracket touches the idler pulley rod
with the clutch control bail disengaged, then an adjustment is necessary.
1. Disconnect and
ground the spark
plug wire against
the engine.
2. Remove the belt
cover as described
under Belt
Replacement in the
Service section.
3. Remove the cotter
pin and spring
washer from the
idler pulley rod. See
Figure 19.
4. Move the idler pulley rod to the lower hole in the idler bracket.
5. Replace the spring washer and hairpin clip.
6. Check the clearance of the idler pulley rod to the indicator bracket by shifting
to each forward mode.
Handle
The handle may be adjusted to the desired height. Refer to the Assembly & Set-Up
section for details.
Belt Replacement
Your tiller has been engineered with a belt designed for long life and optimal
performance. It should never be replaced with a non-OEM belt. Order all belts
through an authorized service dealer or by contacting Customer Support.
1. Disconnect and ground the
spark plug wire against
the engine.
2. Remove the belt cover from
the left side of the tiller by
removing the two screws
from the top of the belt cover.
See Figure 20.
9
Control Rod
Rubber Washer Rubber Washer
Indicator
Bracket
Cotter Pin
Idler Puller Rod
Figure 19
Screws
Screw
Nut & washer
Figure 20