Bombardier-Rotax FR 125 MAX FR 125 Junior MAX Installation And Operator's Manual page 7

Table of contents of Installation Instructions
1. General precaution and safety information for engine installation ...............................................................57
2. Engine removal from the crate .....................................................................................................................57
3. Verification or replenishing of oil level in gear compartment........................................................................60
4. Engine suspension on chassis .....................................................................................................................61
4.1. Attachment via engine pedestal ................................................................................................................61
4.2. Direct attachment of the engine on chassis ..............................................................................................61
5. Fitting of the drive chain ...............................................................................................................................61
6. Fitting of the start button and of ON/OFF circuit breaker .............................................................................62
7. Installation of the battery ..............................................................................................................................63
8. Connecting and routing of the cable harness...............................................................................................64
9. Fitting of the spark plug ................................................................................................................................66
10. Installation of the radiator ...........................................................................................................................66
11. Installation and connection of the fuel pump ..............................................................................................67
12. Installation and connection of the carburetor .............................................................................................68
13. Installation of the Bowden cable for carburetor control ..............................................................................69
14. Installation of the intake silencer with integrated airfilter............................................................................70
15. Venting of the gear compartment ...............................................................................................................70
16. Flooding of the carburetor ..........................................................................................................................70
17. Installation of the exhaust system ..............................................................................................................71
18. Connection of the battery ...........................................................................................................................72
19. Observation of engine speed and coolant temperature .............................................................................73
Table of contents of Operating Instructions
1. Design of the ROTAX engine FR 125 MAX, FR 125 Junior MAX and FR 125 Mini MAX ...........................75
2. Technical description of the ROTAX engine, Type FR 125 MAX, FR 125 Junior MAX
and FR 125 Mini MAX ..................................................................................................................................75
2.1. Type of engine ...........................................................................................................................................75
2.2. Cooling circuit ............................................................................................................................................75
2.3. Balance shaft .............................................................................................................................................75
2.4. Ignition unit ................................................................................................................................................75
2.5. Electric starter............................................................................................................................................76
2.6. Exhaust timing control ...............................................................................................................................76
2.7. Fuel pump..................................................................................................................................................76
2.8. Carburetor..................................................................................................................................................76
2.9. Intake silencer ...........................................................................................................................................77
2.10. Exhaust system .......................................................................................................................................77
3. Media for engine operation...........................................................................................................................77
3.1. Coolant ......................................................................................................................................................77
3.2. Battery and battery charging unit ..............................................................................................................77
3.3. Fuel............................................................................................................................................................79
4. Engine tuning................................................................................................................................................81
4.1. Carburetor calibration ................................................................................................................................81
4.2. Selection of the transmission ratio (FR 125 MAX) ....................................................................................86
4.3. Selection of the transmission ratio (FR 125 Junior MAX) .........................................................................89
4.4. Selection of the transmission ratio (FR 125 Mini MAX).............................................................................91
4.5. Exchange of the clutch drum with chain sprocket fitted ............................................................................93
4.6. Changing or renewal of the chain sprocket on the clutch drum ................................................................94
5. Operating limits.............................................................................................................................................95
6. Engine start and operation ...........................................................................................................................96
7. Stopping the engine......................................................................................................................................96
8. Running-in procedure for the engine............................................................................................................97
9. Setting of the exhaust valve timing (only FR 125 MAX) ...............................................................................98
10. Maintenance schedule for engine components........................................................................................100
11. Transport of the kart .................................................................................................................................101
12. Preservation of engine and equipment.....................................................................................................101
13. Trouble shooting.......................................................................................................................................102
Seite/page 7/108 Ausgabe/edition 09/2003