Yamaha CS50 User Manual

CHAS
FRONT WHEEL
7-4
CAUTION:
Do not contact the wheel bearing inner race
 or balls . Contact should be made only
with the outer race .
NOTE:
Use a socket  that matches the diameter of
the wheel bearing outer race and oil seal.

EAS00535
CHECKING THE SPEED SENSOR UNIT
1. Check:
• speedometer sensor
Bends/damage/wear

Replace.
2. Check:
• speedometer drive gear
• speedometer driven gear
Damage/wear

Replace.
EAS00528
CHECKING THE BRAKE DISC
1. Check:
• brake disc
Damage/galling

Replace.
2. Measure:
• brake disc deflection
Out of specification

Correct the brake
disc deflection or replace the brake disc.

a. Place the scooter on a suitable stand so
that the front wheel is elevated.
b. Before measuring the front brake disc
deflection, turn the handlebar to the left or
right to ensure that the front wheel is statio-
nary.
c. Remove the brake caliper.
d. Hold the dial gauge at a right angle against
the brake disc surface.
e. Measure the deflection below the edge of
the brake disc.

Brake disc deflection limit (maxi-
mum)
0.25 mm





Yamaha CS50 Specifications

General

Fuel Capacity	4.5 liters
Fuel System	Carburetor
Cooling	Air-cooled
Transmission	Automatic
Starting System	Kick start
Brakes	Drum brakes (front and rear)