Fuel System - KTM 400-660 LC4 1998-2005 Repair Manual

8-1E
8

FUEL SYSTEM

INDEX
MIKUNI BST 40
PART-LOAD SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-4
FULL-LOAD SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-5
DISASSEMBLING THE CARBURETOR . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-6
ASSEMBLING THE CARBURETOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-8
CHECKING/ADJUSTING THE THROTTLE SENSOR . . . . . . . . . . . . . . . . . . .8-9
ADJUST IDLING SPEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-10
ADJUSTING THE THROTTLE CABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-10
CHECK FLOAT LEVEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-10
DELL'ORTO
DISASSEMBLING THE CARBURETOR (DELL'ORTO PHM 40 SD) . . . . . . .8-12
ASSEMBLING THE CARBURETOR (DELL'ORTO PHM 40 SD) . . . . . . . . . .8-13
DISASSEMBLING THE CARBURETOR (DELL'ORTO PHM 38 ND) . . . . . . .8-16
ASSEMBLING THE CARBURETOR (DELL'ORTO PHM 38 ND) . . . . . . . . . .8-18
DISASSEMBLING THE CARBURETOR (DELL'ORTO VHSB 38 QS) . . . . . . .8-21
ASSEMBLING THE CARBURETOR (DELL'ORTO VHSB 38 QS) . . . . . . . . .8-22
CHECK FLOAT LEVEL (DELL'ORTO 38 ND / 40 SD) . . . . . . . . . . . . . . . . .8-25
CHECKING AXIAL CLEARANCE OF FLOAT (DELL'ORTO 38 ND / 40 SD) . .8-25
ADJUST HOT START DEVICE (DELL'ORTO 40 SD) . . . . . . . . . . . . . . . . . .8-25
ADJUSTING THE THROTTLE CABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-26
ADJUSTING THE CHOKE CABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-26
KEIHIN FCR 41
DISASSEMBLING THE CARBURETOR . . . . . . . . . . . . . . . . . . . . . . . . . . .8-28
CHECKING THE CHOKE SLIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-31
CHECKING THE ACCELERATOR PUMP . . . . . . . . . . . . . . . . . . . . . . . . . .8-31
CHECKING THE JET NEEDLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-31
CHECKING THE FLOAT NEEDLE VALVE . . . . . . . . . . . . . . . . . . . . . . . . . .8-31
CHECKING THE THROTTLE VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-31
ASSEMBLING THE CARBURETOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-32
ADJUSTING THE POSITION OF THE THROTTLE VALVE SENSOR . . . . . . .8-35
CHECKING THE THROTTLE VALVE SENSOR . . . . . . . . . . . . . . . . . . . . . .8-36
DISMOUNTING AND INSTALLING THE THROTTLE VALVE SENSOR . . . . .8-36
ADJUST IDLING SPEED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-37
CHECKING/ADJUSTING THE FLOAT HEIGHT . . . . . . . . . . . . . . . . . . . . .8-38