Cub Cadet 641 - Manual (Page 16)

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• 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:
• Remove hardware and belt shield. See Figure 19.
Figure 19
• 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 (rear
pulley) and then over the drive clutch pulley (front
pulley). Install belt shield.
Adjusting Brake
The wet brake system is an internal part of the
transmission and it is adjusted externally without
opening the transmission. There are two sets of brakes
that may require adjustment. Each set consists of two
rotating friction plates placed between three fixed steel
plates operating in oil. Each set of brakes is operated
by it’s respective lever arm. The brakes are properly
adjusted at the factory.
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.
Figure 20
• Push the brake lever arm forward until the internal
brake disc stop is detected.
• Run up the jam nut of the rear side until it touches
and then back off one turn.
• Tighten the front side jam nut.
• Check the brake pedal by hand. It should have 3/4”
free travel.
• Hook up the return spring.
• Rotate the rear wheels by hand with brake pedal
released. The wheels should rotate freely.
• Cautiously complete the testing on level ground by
operating the machine and applying brakes in a
normal manner.
• Repeat the adjustment procedure if necessary.
Cleaning
The body panels are scratch and impact resistant
automotive quality ABS plastic. The use of standard car
wash soap and non-abrasive car wax is acceptable for
cleaning the body panels. Avoid any abrasive cleaner
or rubbing compounds for these will damage the body
panels. Dry thoroughly to avoid water spots.
WARNING: Damage may occur if direct hose
spray comes in contact with any other electri-
cal components, i.e. at instrument cluster or
under dash.
Storage
• Stop the vehicle on a level surface and apply
parking brake.
• Allow vehicle to cool.
Belt Shield
Clutch Pulley
(Front)
Drive Pulley
(Rear)
Chain Adjuster
Front Side
Jam Nut
Rear Side
Jam Nut
Brake Arm
Return Spring