Derbi boulevard 125 4t Workshop Manual page 134

Engine
- Preassemble the oil seal with the appropriate
tool, positioning the screws
- Place the sheath over the crankshaft
- Insert the tool with the oil seal on the crankshaft
until it comes into contact with the crankcase
CAUTION
ORIENT THE OIL GUARD BY POSITIONING
THE CHAIN HOUSING CHANNEL FACING
DOWNWARDS. WHEN THE POSITION IS
REACHED, DO NOT RETRACT THE OIL
GUARD. FAILURE TO COMPLY WITH THIS
RULE CAN CAUSE A WRONG POSITIONING
OF THE OIL GUARD SHEATH.
- Orientate the oil guard by inserting the bracket
which is part of the specific tool.
- Tighten the threaded bar onto the crankshaft as
far as it will go.
ENG - 134