Rotax Leonardo 120 User Manual

4 - 2001
TYPE 120/154/177
CONTENTS page
INDICE DEI CAPITOLI pagina
Piston — remove ..............................................................................................50
Oil filter and oil pressure switch — remove .......................................................51
Ignition and electric starter gearing — remove ..................................................51
Oil pump — remove ..........................................................................................53
Water pump — remove......................................................................................53
Chain tension guide and timing chain — remove ...............................................55
Oil strainer — remove .......................................................................................55
Variator — remove ............................................................................................56
Oil pressure valve .............................................................................................58
Transmission — remove....................................................................................58
Half crankcase — separate ...............................................................................61
Crankshaft — remove .......................................................................................62
Servicing procedures
Crankcase.........................................................................................................63
Half crankcase, flywheel side (MS) — flywheel side servicing ..........................65
Half crankcase, clutch side — removal and refitting of plain bearings,
ball bearings, oil seal, etc. ................................................................................69
Transmission cover — servicing.......................................................................76
Crankshaft ........................................................................................................80
Transmission .....................................................................................................82
Variator, primary drive side — check .................................................................83
Secondary drive ................................................................................................87
Timing gear .......................................................................................................91
Chain guide and chain tension guide .................................................................92
Oil pump and water pump gearing .....................................................................92
Oil pressure retaining valve ...............................................................................94
Cylinder.............................................................................................................95
Piston and piston pin ........................................................................................95
Piston rings.......................................................................................................97
Cylinder head ....................................................................................................99
Valves ............................................................................................................. 102
Valve seats ..................................................................................................... 103
Rocker arms ................................................................................................... 105
Thermostat — check (Leonardo 120 only)..................................................... 107
Pistone — smontaggio ......................................................................................50
Filtro olio e bulbo pressione olio — smontaggio.................................................51
Accensione e ruotismo per avviamento elettrico — smontaggio ........................51
Pompa dell’olio — smontaggio ..........................................................................53
Pompa acqua — smontaggio ............................................................................53
Pattino tendicatena e catena distribuzione — smontaggio .................................55
Retino olio — smontaggio .................................................................................55
Variatore — smontaggio ....................................................................................56
Valvola pressione olio .......................................................................................58
Trasmissione — smontaggio .............................................................................58
Coppia semicarter — separazione ....................................................................61
Albero motore — smontaggio ............................................................................62
Interventi sulle varie parti
Carter motore ....................................................................................................63
Semicarter, lato volano (MS) — interventi lato volano .......................................65
Semicarter, lato frizione — smontaggio e montaggio delle bronzine,
cuscinetti a sfere, paraolio ecc. ........................................................................69
Coperchio trasmissione — interventi ................................................................76
Albero motore ...................................................................................................80
Trasmissione .....................................................................................................82
Variatore, lato trasmissione primaria — controllo ...............................................83
Trasmissione secondaria ...................................................................................87
Comando della distribuzione .............................................................................91
Pattino guidacatena e pattino tendicatena .........................................................92
Ingranaggio per pompa dell’olio e pompa dell’acqua ..........................................92
Valvola di sovrappressione olio .........................................................................94
Cilindro ..............................................................................................................95
Pistone e spinotto .............................................................................................95
Segmenti ..........................................................................................................97
Testata ..............................................................................................................99
Valvole ............................................................................................................ 102
Sede valvola ...................................................................................................103
Bilancieri ......................................................................................................... 105
Termostato — controllo (solo Leonardo 120) .................................................107

Rotax Leonardo 120 Specifications

General

Brand	Rotax
Model	Leonardo 120
Category	Engine
Language	English