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Chapter 6
POWER TRANSMISSION
The power transmission of the motorcycle is comprised of the clutch, gearbox, drive shaft and the
final drive.
CLUTCH
The clutch transmits torque from the engine to the gearbox. Disengage the engine from the gear-
box during shifting of the gears and during braking to a stop. The clutch provides for smooth
starting of the motorcycle from rest, protects the power transmission parts against damage when
the engine speed or drive wheel speed is suddenly changed. The clutch is of dry double-disk
design. The clutch release mechanism is controlled by the lever on the left grip of the handle bar.
With the clutch lever released, the engine is engaged to the gearbox. When the clutch lever is
squeezed, the engine is disengaged from the gearbox. Use the clutch lever for starting from
rest and for gear shifting. Under conditions of heavy traffic, when gears frequently have to be
shifted, do not slip the clutch too much, as this will accelerate wear of the disks.
GEARBOX
Shifting the gears is best accomplished by pushing down on the front toe plate for first gear and to
downshift from higher gears. To shift up into second, third and fourth gear, use the front toe plate
and push upwards quickly and firmly. Since the Ural transmission is a non-synchronized design, it
is very important that the clutch be used when shifting. Not using the clutch when shifting can
cause damage and void the warranty.
CAUTION: Severe damage due to insufficient lubrication of gears, shafts and bearings can
result if the oil level is allowed to get lower than the specified level.
FINAL DRIVE
Maintenance of propeller shaft splines and final drive.
Remove the final drive from the swing arm and pull the final drive towards the rear of the bike.
When the drive shaft is free, coat the drive shaft splines with grease. At the same time, use a
grease gun to force grease into the drive shaft universal joint.
Typical final drive maintenance includes tightening the nuts which fasten the final drive to the
swinging fork arm. Failure to tighten the nuts may result in loose joints and the destruction of the
final drive cover. Change the final drive oil as determined by the service coupons. Undo the filler
and drain plugs and drain the used oil. Reinsert the drain plug and fill the casing with fresh 20w /
50 Castrol oil and flush the final drive by turning the rear wheel several times. Drain the 20w / 50
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