Crankcase / Transmission / Central Crankcases; Disassembling The Transmission And The Crankshaft - SHERCO 250 SEF-R Workshop Manual

CRANKCASE / TRANSMISSION / CENTRAL CRANKCASES

Disassembling the transmission and
the crankshaft
 Remove the engine from the frame (see the
engine removal chapter).
 Remove the top end (see the top end
chapter).
 Remove the ignition components (see the
ignition chapter).
 Remove the clutch components (see the
clutch chapter).
 Remove the cam drive chain (see the top
end chapter).
 Remove the cam chain tensioner and
guides.
 Block the transmission primary gear with
special tool number 1817.
 Loosen the fixing nut for the counter
balancer.
 Remove the counter balancer weight.
 Remove the freewheel / crankshaft spacer
using a two-armed gear puller. (see photo)
 Remove the engine oil pump cover.
 Block the transmission primary gear with
special tool number 1817.
 Remove the transmission primary gear.
 Remove the clutch basket, the needle
bearings and the thrust washer.
 Remove the primary transmission gears.
 Remove the oil pump drive gear.
 Remove the oil pump cover.
 Remove the oil pump rotor.
 Remove the oil pump shaft.
 Remove the gear selector shaft.
 Using special tool number 2073 block the
gear selector drum and remove the gear
selector index wheel screw...
 Remove the gear selector index wheel.
 Remove special tool number 2073.
 Remove the starter motor.
 Loosen
and remove
crankcase screws.
the 13 central
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