Fuel System; Service Information; Torque Values - Honda Metropolitan CHF50 Service Manual

FUEL SYSTEM

SERVICE INFORMATION

GENERAL
• Work in a well ventilated area. Smoking or allowing flames or sparks in the work area or where gasoline is stored can
cause a fire or explosion.
• For fuel pump inspection, refer to page 4-5.
• For throttle sensor inspection, refer to page 16-8.
• When disassembling fuel system parts, note the locations of the O-rings. Replace them with new ones on reassembly.
• Before disassembling the carburetor, place a suitable container under the carburetor drain hose. Loosen the bolt and
drain the carburetor.
• After removing the carburetor, wrap the intake port of the engine with a shop towel or cover it with pieces of tape to
prevent any foreign material from dropping into the engine.
SPECIFICATIONS: ('02 -'05 model)
Carburetor identification number
Main jet
Slow jet
Pilot screw
Float level
Idle speed
Starting enrichment (SE) valve resistance (20°C/68°F)
Throttle grip free play
SPECIFICATIONS: (After '05 model)
Carburetor identification number
Main jet
Slow jet
Pilot screw
Float level
Idle speed
Starting enrichment (SE) valve resistance (20°C/68°F)
Throttle grip free play

TORQUE VALUES

Float chamber screw
Vacuum chamber cover screw
SE valve setting plate screw
Insulator band screw (After '03: V.I.N After 5018998)
TOOLS
Carburetor float level gauge
07401-0010000
5-4
ITEM
[P type]
[P type]
ITEM
'06 – '07 model
After '07 model
2.1 N·m (0.21 kgf·m, 1.5 lbf·ft)
2.1 N·m (0.21 kgf·m, 1.5 lbf·ft)
2.1 N·m (0.21 kgf·m, 1.5 lbf·ft)
3.0 N·m (0.30 kgf·m, 2.2 lbf·ft)
Pilot screw wrench
07KMA-MS60101
or 07MMA-MT3010B
or 07MMA-MT3010A (U.S.A. only)
SPECIFICATIONS
NVK00E
NVK00F
#72
#35 X #35
2-3/4 turns out
2-1/8 turns out
13 mm (0.51 in)
2,000 ± 100 rpm
2.8 – 5.2 Ω
2 – 6 mm (1/16 – 1/4 in)
SPECIFICATIONS
NVK00J
NVK00K
#72
#35 X #35
2-1/4 turns out
13 mm (0.51 in)
2,000 ± 100 rpm
2.8 – 5.2 Ω
2 – 6 mm (1/16 – 1/4 in)