Montesa COTA 4RT 260 2023, Owner'S Manual

Page: 118 / 180

Engine servicing
4-55 4-55
(1) SHIFT FORK SHAFTS
(2) SHIFT FORKS
(3) MAINSHAFT
(4) COUNTERSHAFT
Remove the following:
– Crankshaft
– Shift fork shafts, shift forks and shift drum
– Mainshaft and countershaft assembly
Disassemble the mainshaft and countershaft.
(1) OIL PUMP SHAFT
(2) INNER ROTOR
(3) OUTER ROTOR
Place the right crankcase facing down and remove the left
crankcase from the right crankcase.
Remove the gasket and dowel pins.
Remove the one-way reed valve.
Remove the oil pump shaft, oil pump inner and outer
rotors.
(1) GASKET
(2) DOWEL PINS
(3) ONE-WAY REED VALVE
Remove the transmission oil drain bolt and sealing washer.
Loosen the crankcase bolts in a crisscross pattern in 2 or
3 steps.
Remove the crankcase bolts.
(1) TRANSMISSION OIL DRAIN BOLT
(2) CRANKCASE BOLTS
1
2
3
1
2
3
2
2
1
4
3
2
1
1
2
2