Beta RR 125 LC - Removing the Cylinder Head; Checking the Cylinder Head

CYLINDER HEAD
EAS24130
REMOVING THE CYLINDER HEAD
1. Align:
•“I” mark “a” on the generator rotor
(with the stationary pointer “b” on the genera-
tor cover)
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a. Turn the crankshaft counterclockwise.
b. When the piston is at TDC on the compres-
sion stroke, align the “I” mark “c” on the cam-
shaft sprocket with the stationary pointer “d”
on the cylinder head.
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2. Loosen:
• Camshaft sprocket bolt “1”
T
IP
While holding the generator rotor nut with a
wrench “2”, loosen the camshaft sprocket bolt.
3. Remove:
• Camshaft sprocket
T
IP
To prevent the timing chain from falling into the
crankcase, fasten it with a wire “1”.
4. Remove:
• Cylinder head
T
IP
• Loosen the bolts in the proper sequence as
shown.
• Loosen each bolt 1/2 of a turn at a time. After
all of the bolts are fully loosened, remove them.
• Remove the cylinder head from the right side
of the vehicle.
EAS24160
CHECKING THE CYLINDER HEAD
1. Eliminate:
• Combustion chamber carbon deposits
(with a rounded scraper)
T
IP
Do not use a sharp instrument to avoid damag-
ing or scratching:
• Spark plug bore threads
• Valve seats
b
a
d
c
1
1
1
2
1
3
5
1
2
4
6