1
125
-
160 cc
C
WORKSHOP MANUAL
GENERAL INDEX
Assembling the piston ...................................................................37
Stripping down the cylinder head .................................................38
Checking valve springs .................................................................................. 40
Checking valves ............................................................................................. 40
Checking and adjusting valve seating ..........................................42
Inspection ....................................................................................................... 42
Change ........................................................................................................... 42
Lapping .......................................................................................................... 44
Installing the cylinder .....................................................................50
Installing the cylinder head ............................................................52
Installing the camshaft support .....................................................53
Checking engine timing .................................................................57
Fitting the valves cover ..................................................................58
SPEED VARIATOR-CLUTCH UNIT
..................................60
Trouble shooting .............................................................................61
Variator unit exploded view ..........................................................62
Clutch unit exploded view .............................................................63
Clutch pulley exploded view .........................................................64
Clutch shoes assy exploded view ................................................65
Removing the clutch cover ............................................................66
Assembly ........................................................................................................ 67
Primary pulley .................................................................................67
Disassembly ................................................................................................... 67
Checks .............................................................................................70
Drive belt ........................................................................................................ 70
Roller weights ................................................................................................. 71
Mobile primary pulley ..................................................................................... 71
OIL PUMP ASSY
...........................................................................3
Trouble shooting ............................................................................................... 4
Exploded view of oil pump ...............................................................5
Disassembly ......................................................................................6
Removing the oil pump .................................................................................... 8
Oil pump body tolerances ................................................................................ 9
Clearance between oil pump inner and outer rotors ...................10
Clearance between front surfaces ................................................10
Assembly .........................................................................................11
CYLINDER HEAD, VALVES, CYLINDER, PISTON
.....15
Working precautions ......................................................................15
Trouble shooting .............................................................................18
Cylinder head exploded view .........................................................19
Cylinder compression pressure ...................................................20
Valve clearance adjustment ...........................................................21
Removing camshaft support .........................................................23
Removing the camshaft .................................................................26
Checks .............................................................................................27
Camshaft ....................................................................................................... 27
Rocker arms and rocker arm spindles ........................................................... 28
Removing the cylinder head ..........................................................29
Removing the cylinder ...................................................................31
Removing the piston ......................................................................32
Cylinder / piston checks .................................................................34
Checking the cylinder ..................................................................................... 34
Checking the piston ........................................................................................ 34
