Adjusting Brake; Drive Belt - Cub Cadet Big Country 420A Operator's Manual

• Remove cap screw and front wheel. Place new
wheel on front axle hub and secure with cap screw
and Loctite 242.
• Remove support stands and lower vehicle.
• Finish tightening the 16 x 40 screw to 80-85 lb-ft
using a torque wrench.
Overtightening front wheel can result in
IMPORTANT:
bearing damage.
Changing Transaxle Oil
Figure 18
WARNING: The fluid for your transmission
has been specially formulated to ensure the
safe and proper operation of your vehicle.
When changing the transmission fluid replace
it with 80-90 Weight Oil. Failure to use 80-90
Weight Oil may result in a failure of the drive
system which could result in property damage
or personal injury. Do not substitute.
If brakes start to chatter or are noisy when
IMPORTANT:
applied, change transaxle oil before waiting until the
service interval.
• Park vehicle on level surface and apply parking
brake.
• Raise and secure cargo box, if manual lift.
• Access drain plug through slot on underside of
machine and remove plug. See Figure 18.
• Check O-ring on drain plug and replace if missing
or in poor condition.
• Install and tighten drain plug.
Dirt and debris in oil may cause damage to
IMPORTANT:
transaxle. Clean area around opening before removing
oil cap
• Remove oil cap and add approximately 22 oz of 80-
90 Weight Oil.
• Install oil cap, and lower and latch cargo box.

Drive Belt

WARNING: Fingers or loose clothing can get
caught in rotating parts. Stop engine and wait
for all moving parts to stop before servicing.
Oil Cap
Drain
Plug
• Park vehicle on level surface and apply parking
brake.
• Raise and secure cargo box, if manual lift.
• Rotate and inspect belt for wear or damage.
• Measure width of belt on top surface. The width
should be a minimum of 1.1 (27 mm).
• Replace belt if worn beyond limit.
To replace belt:
• Route belt over drive clutch pulley (front pulley).
• Route belt from drive pulley (rear pulley).
See Figure 19.
• Install new belt by routing over drive pulley (front
pulley) and then over the drive clutch pulley (rear
pulley). Install belt shield.
Drive Pulley
(Front)

Adjusting Brake

To adjust the brakes:
• Stop the vehicle on a level surface.
• Turn the ignition key to the STOP position and
remove the key.
• Block the front wheels, position the shift lever into
neutral, and make sure parking brake in not
activated.
• Use a jack to raise the rear wheels at least one inch
off the ground. Then use blocks or stands to
support the machine.
• Disconnect brake arm return spring. See Figure 20.
• Loosen the front and rear jam nuts.
Front Side
Jam Nut
• Push the brake lever arm forward until the brake
stop is detected.
15
Clutch Pulley
(Rear)
Figure 19
Brake Arm
Return Spring
Rear Side
Jam Nut
Figure 20