Honda Metropolitan CHF50 Service Manual page 58

MAINTENANCE
SERVICE INFORMATION
GENERAL
• Place the scooter on a level surface before starting any work.
SPECIFICATIONS
ITEM
Throttle grip free play
Spark plug
Standard
For cold climate (below 5°C/41°F)
For extended high speed riding
Sparkplug gap
Valve clearance
Engine oil capacity
Recommended engine
IN
EX
After draining
At disassembly
oil
Engine idle speed
Brake lever free play
Tire size
Cold tire pressure
Minimum tire tread depth
Left
Right
Front
Rear
Front
Rear
Front
Rear
SPECIFICATIONS
2 - 6 mm (1/16-1/4 in)
NGK
CR8EH-9
CR7EH-9
CR9EH-9
DENSO
U24FER9
U22FER9
U27FER9
0.80 - 0.90 mm (0.031 - 0.035 in)
0.10 ± 0.03 mm (0.004 ± 0.001 in)
0.19 ± 0.03 mm (0.007 ± 0.001 in)
0.6 liter (0.6 US qt, 0.5 Imp qt)
0.7 liter (0.7 US qt, 0.6 Imp qt)
Pro Honda GN4 or HP4 (Without molybdenum addi-
tives) 4-stroke oil or equivalent motor oil
API service classification: SG or Higher
Viscosity: SAE 10W-40
2,000 ± 100 rpm
10-20 mm (3/8-13/16 in)
10-20 mm (3/8-13/16 in)
90/90-10 50J
90/90-10 50J
125 kPa (1.25 kgf/cm
2
,18 psi)
200 kPa (2.00 kgf/cm
2
, 28 psi)
0.8 mm (0.03 in)
0.8 mm (0.03 in)
TORQUE VALUES
Spark plug
Engine oil drain bolt
Engine oil strainer cap
Brake cable adjust lock nut
12 N-m (1.2 kgf-m, 9 Ibf-ft)
25 N-m (2.5 kgf-m, 18 Ibf-ft)
20 N-m (2.0 kgf-m, 14 Ibf-ft)
6.8 N-m (0.7 kgf-m, 5 Ibf-ft)
3-2