Yamaha CS50 User Manual

COOL
RADIATOR AND WATER PUMP
5-2
REMOVING THE RADIATOR
1. Remove:
• front upper cowling
• front middle cowling
• front lower cowling
Refer to “FRONT COWLING AND FOO-
TREST” in chapter 3.
2. Drain:
• coolant (from cooling system)
Refer to “CHANGING THE COOLANT” in
chapter 3.
3. Remove:
• hose clamp 
NOTE:
Remove the hose clamp with a thin flatted-
head screwdirver.
4. Remove:
• radiator hoses 
• radiator 
EAS00470
REMOVING THE WATER PUMP
1. Drain:
• coolant (from cooling system)
Refer to “CHANGING THE COOLANT” in
chapter 3.
2. Remove:
• water pump cover 
• crankcase cover  (right)
3. Remove:
• circlip 
• water pump drive pulley 
• pin 
• impeller
4. Remove:
• bearings 
NOTE:
Remove the bearing and oil seal from the out-
side of the crankcase cover (right).
5. Remove:
• water pump seal 
NOTE:
Remove te water pump seal from the inside of
the crankcase cover (right)











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)