Yamaha TZR50 '03 Service Manual page 80

REMOVING THE ENGINE
ENGINE
REMOVING THE ENGINE
NOTE:
It is not necessary to remove the engine to
take out the following components:
• Cylinder head
• Cylinder
• Piston
PREPARATION FOR REMOVAL
1. Remove all the dirt, mud, dust and foreign
bodies before removing and dismantling
the engine.
2. Use the proper tools and cleaning mate-
rials. See "CHAPTER 1. GENERAL INFOR-
MATION - SPECIAL TOOLS".
NOTE:
When the engine is dismantled keep associa-
ted parts together. This includes gears, cylin-
der, piston and other items that have been
coupled due to common wear. These items
must be installed as an assembly or should be
replaced by new ones.
3. When dismantling the engine, clean all the
parts and place these in trays in the dis-
mantling order. This will reduce the
assembly time and ensure that all the parts
removed are properly fitted in the engine
again.
4. Remove the lower fairing. Place the engine
on a suitable support.
5. Start the engine and let it warm up.
6. Completely drain the transmission oil. See
the section on "CHANGING THE TRANS-
MISSION OIL in CHAPTER 3, REGULAR
INSPECTIONS AND ADJUSTMENTS".
7. Completely drain the coolant. See the sec-
tion on "CHANGING THE COOLANT in
CHAPTER 3. COOLING SYSTEM".
4-1
ENG