
TABLE
OF
CONTENTS
4
Changing the connecting
rod,
conrad bearing and crank Installing the suction pump.......................................... 151
pin.............................................................................
124
Installing the ignition pulse generator............................
152
Checking crankshaft run-out at bearing pin ....................
126
Installing the timing chain............................................
152
Cylinder -Nikasil" coating............................................
126
Installing the timing chain securing guide......................
152
Checking/measuring cylinder ........................................
126
Installing
the
timing
chain
tensioning
rail
...................... 152
Checking/measuring the piston .....................................
127
Installing the timing chain guide rail .............................
153
Checking the piston ring end gap ..................................
127
Installing the balance weight ........................................
153
Piston/cylinder -determining the mounting clearance .....
128
Installing the rotor.......................................................
153
Checking the oil pumps................................................
128
Installing the piston.....................................................
153
Disassembling the autodecompressor ............................
128
Installing the cylinder head ..........................................
155
Assembling the autodecompressor.................................
129
Installing the camshaft ................................................
156
Checking camshaft ......................................................
129
Installing
the
timing
chain
tensioner
............................. 156
Checking the timing assembly ......................................
130
Checking the valve clearance........................................
157
Preparing the timing chain tensioner for installation .......
130
Adjusting the valve clearance........................................
157
Removing the rocker arm..............................................
131
Installing the alternator cover .......................................
157
Removing the valves ....................................................
131
Installing the shift lever ...............................................
158
Changing camshaft bearing ..........................................
132
Installing the valve cover..............................................
158
Checking valves...........................................................
132
Installing the spark plug...............................................
158
Checking valve springs.................................................
133
Installing the starter motor...........................................
158
Checking valve spring seat............................................
133
Installing the oil filter ..................................................
159
Checking the cylinder
head
..........................................
133
Filling up with engine oil..............................................
159
Checking the rocker arm shafts.....................................
134
Filling up with gear oil .................................................
159
Installing the valves .....................................................
134
Removing the engine from the work stand......................
160
Installing the rocker arm ..............................................
135
31/CARBURETOR ........................................................... 161
Checking the clutch.....................................................
135
Choke
(EXC
AUS/USA,
XC.W
SIX
DAYS)
........................ 161
Checking shift mechanism ...........................................
136
Choke
(EXC
EU,
EXC
SIX
DAYS)
................................... 161
Preassembling the shift shaft........................................
137
Carburetor -adjusting the idle speed ............................. 161
Disassembling the main shaft.......................................
137
Emptying the carburetor float chamber..........................
162
Assembling the main shaft ...........................................
138
Removing the carburetor ..............................................
163
Disassembling the countershaft ....................................
138
Installing the carburetor...............................................
163
Assembling the countershaft.........................................
139
Checking/adjusting the carburetor components...............
164
Checking
the
transmission
............................................ 139 Checking the throttle valve sensor .................................
165
Premounting the kickstarter shaft..................................
140
Disassembling the carburetor........................................
165
Checking the electric starter mode ................................
141
Checking the choke slide..............................................
168
Removing the freewheel ...............................................
142
Checking the
jet
needle................................................
168
Checking the freewheel ................................................
142
Checking the throttle slide............................................
168
Installing the free wheel ...............................................
142
Checking the needle
jet
................................................
169
30/ENGINE ASSEMBLy...................................................
144
Checking the float needle valve.....................................
169
Installing the crankshaft...............................................
144
Assembling the carburetor............................................
169
Installing the transmission shafts..................................
144
Checking/adjusting the float level..................................
172
Installing the shift forks ...............................................
144
Checking/setting the throttle slide opening.....................
172
Installing the shift drum...............................................
145
Checking/adjusting the accelerator pump.......................
173
Installing the shift rails ................................................
145
Adjusting the position of the throttle position sensor.......
173
Installing the left engine case.......................................
145
321CLUTCH
....................................................................
175
Installing the free wheel gear........................................
146
Checking the fluid level of hydraulic clutch....................
175
Installing the primary gear............................................
146
Changing the hydraulic clutch fluid...............................
175
Installing the oil pumps ...............................................
146
33fTRANSMISSION.........................................................
177
Installing the oil pump gears ........................................
147
Removing the engine sprocket ......................................
177
Installing the locking lever............................................
147
Installing the engine sprocket .......................................
177
Installing the shift drum locating uni!............................
147
35IWATER PUMP,
COOLING
SYSTEM
..............................
178
Installing the shift shaft...............................................
147
Cooling system ............................................................
178
Installing the kickstarter idler gear ................................
148
Checking the anti-freeze and coolant level .....................
178
Installing the kickstarter shaft ......................................
148
Checking the coolant level............................................
179
Installing the starter idler gear ......................................
148
Draining coolant..........................................................
179
Installing the torque limiter..........................................
148
Refilling coolant..........................................................
180
Installing the balancer shaft .........................................
149
381LUBRICATION
SYSTEM
.............................................. 181
Installing the outer clutch hub......................................
149
Oil circuit ................................................................... 181
Installing the primary gear nut......................................
150
Checking engine oil level .............................................. 181
Installing the clutch discs ............................................
150
Changing
engine
oil
and
oil
filter,
cleaning
engine
oil
Installing the clutch cover ............................................
150
screen ........................................................................
182
Installing the water pump cover ....................................
151
Draining
engine
oil,
cleaning
engine
oil
screen
............... 182
Installing the kickstarter...............................................
151
Removing the oil filter..................................................
182
TABLE
OF
CONTENTS
4
Changing the connecting
rod,
conrad bearing and crank Installing the suction pump.......................................... 151
pin.............................................................................
124
Installing the ignition pulse generator............................
152
Checking crankshaft run-out at bearing pin ....................
126
Installing the timing chain............................................
152
Cylinder -Nikasil" coating............................................
126
Installing the timing chain securing guide......................
152
Checking/measuring cylinder ........................................
126
Installing
the
timing
chain
tensioning
rail
...................... 152
Checking/measuring the piston .....................................
127
Installing the timing chain guide rail .............................
153
Checking the piston ring end gap ..................................
127
Installing the balance weight ........................................
153
Piston/cylinder -determining the mounting clearance .....
128
Installing the rotor.......................................................
153
Checking the oil pumps................................................
128
Installing the piston.....................................................
153
Disassembling the autodecompressor ............................
128
Installing the cylinder head ..........................................
155
Assembling the autodecompressor.................................
129
Installing the camshaft ................................................
156
Checking camshaft ......................................................
129
Installing
the
timing
chain
tensioner
............................. 156
Checking the timing assembly ......................................
130
Checking the valve clearance........................................
157
Preparing the timing chain tensioner for installation .......
130
Adjusting the valve clearance........................................
157
Removing the rocker arm..............................................
131
Installing the alternator cover .......................................
157
Removing the valves ....................................................
131
Installing the shift lever ...............................................
158
Changing camshaft bearing ..........................................
132
Installing the valve cover..............................................
158
Checking valves...........................................................
132
Installing the spark plug...............................................
158
Checking valve springs.................................................
133
Installing the starter motor...........................................
158
Checking valve spring seat............................................
133
Installing the oil filter ..................................................
159
Checking the cylinder
head
..........................................
133
Filling up with engine oil..............................................
159
Checking the rocker arm shafts.....................................
134
Filling up with gear oil .................................................
159
Installing the valves .....................................................
134
Removing the engine from the work stand......................
160
Installing the rocker arm ..............................................
135
31/CARBURETOR ........................................................... 161
Checking the clutch.....................................................
135
Choke
(EXC
AUS/USA,
XC.W
SIX
DAYS)
........................ 161
Checking shift mechanism ...........................................
136
Choke
(EXC
EU,
EXC
SIX
DAYS)
................................... 161
Preassembling the shift shaft........................................
137
Carburetor -adjusting the idle speed ............................. 161
Disassembling the main shaft.......................................
137
Emptying the carburetor float chamber..........................
162
Assembling the main shaft ...........................................
138
Removing the carburetor ..............................................
163
Disassembling the countershaft ....................................
138
Installing the carburetor...............................................
163
Assembling the countershaft.........................................
139
Checking/adjusting the carburetor components...............
164
Checking
the
transmission
............................................ 139 Checking the throttle valve sensor .................................
165
Premounting the kickstarter shaft..................................
140
Disassembling the carburetor........................................
165
Checking the electric starter mode ................................
141
Checking the choke slide..............................................
168
Removing the freewheel ...............................................
142
Checking the
jet
needle................................................
168
Checking the freewheel ................................................
142
Checking the throttle slide............................................
168
Installing the free wheel ...............................................
142
Checking the needle
jet
................................................
169
30/ENGINE ASSEMBLy...................................................
144
Checking the float needle valve.....................................
169
Installing the crankshaft...............................................
144
Assembling the carburetor............................................
169
Installing the transmission shafts..................................
144
Checking/adjusting the float level..................................
172
Installing the shift forks ...............................................
144
Checking/setting the throttle slide opening.....................
172
Installing the shift drum...............................................
145
Checking/adjusting the accelerator pump.......................
173
Installing the shift rails ................................................
145
Adjusting the position of the throttle position sensor.......
173
Installing the left engine case.......................................
145
321CLUTCH
....................................................................
175
Installing the free wheel gear........................................
146
Checking the fluid level of hydraulic clutch....................
175
Installing the primary gear............................................
146
Changing the hydraulic clutch fluid...............................
175
Installing the oil pumps ...............................................
146
33fTRANSMISSION.........................................................
177
Installing the oil pump gears ........................................
147
Removing the engine sprocket ......................................
177
Installing the locking lever............................................
147
Installing the engine sprocket .......................................
177
Installing the shift drum locating uni!............................
147
35IWATER PUMP,
COOLING
SYSTEM
..............................
178
Installing the shift shaft...............................................
147
Cooling system ............................................................
178
Installing the kickstarter idler gear ................................
148
Checking the anti-freeze and coolant level .....................
178
Installing the kickstarter shaft ......................................
148
Checking the coolant level............................................
179
Installing the starter idler gear ......................................
148
Draining coolant..........................................................
179
Installing the torque limiter..........................................
148
Refilling coolant..........................................................
180
Installing the balancer shaft .........................................
149
381LUBRICATION
SYSTEM
.............................................. 181
Installing the outer clutch hub......................................
149
Oil circuit ................................................................... 181
Installing the primary gear nut......................................
150
Checking engine oil level .............................................. 181
Installing the clutch discs ............................................
150
Changing
engine
oil
and
oil
filter,
cleaning
engine
oil
Installing the clutch cover ............................................
150
screen ........................................................................
182
Installing the water pump cover ....................................
151
Draining
engine
oil,
cleaning
engine
oil
screen
............... 182
Installing the kickstarter...............................................
151
Removing the oil filter..................................................
182