Montesa COTA 300RR 2018, Owner'S Manual

Page: 88 / 176

Engine servicing
4-25 4-25
(1) RETAINER
(2) OUTER SPRING
(3) INNER SPRING
(4) SPRING SEAT
(5) VALVE
(6) STEM SEAL
(7) COTTERS
Remove the following:
– Spring retainer
– Outer and inner valve springs
– Stem seal
– Valve spring seat
– Intake and exhaust valve
Cylinder Head Disassembly
Remove the cylinder head (page 4-23).
Remove the valve spring cotters using the special tools.
To prevent loss of tension, do not compress the valve
springs more than necessary to remove the cotters.
Tools:
Valve spring compressor 07757-0010000
Compressor attachment 07959-KM30101
(1) VALVE SPRING COMPRESSOR
(2) ATTACHMENT
(3) COTTERS
(1) CAM CHAIN GUIDE PLATE
(2) BOLTS
Install the cam chain guide by aligning the guide end with
the groove in the crankcase and the tab with the groove
in the cylinder.
Install the cam chain guide plate and tighten the bolts.
Install the following:
– Flywheel (page 4-53)
– Left crankcase cover (page 4-50)
– Cylinder head (page 4-37)
(1) CAM CHAIN GUIDE
(2) ALIGN
1
2
2
1
2
2
1
2
1
6
5
4
3
2
1
3
7
7