Honda SUPER CUB C125 2023 Owner's Manual page 140

Specifications
Service Data
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Front
Tire size
Rear
Tire type
Front
Recommended
Tire
Rear
Front
Tire air pressure
Rear
Spark plug (standard)
Spark plug gap 0.031 - 0.035 in (0.8 - 0.9 mm)
(non-
Idle speed
adjustable)
136
70/90-17M/C 38P
80/90-17M/C 50P
Bias-ply, tubeless
IRC NF63B YD
IRC NR94
29 psi (200 kPa, 2.00 kgf/cm )
2
33 psi (225 kPa, 2.25 kgf/cm )
2
CPR7EA-9S (NGK)
1,400 ± 100 rpm
API Service Classification SJ or higher
except oils labeled as energy conserving or
resource conserving on the circular API
Recommended
service label, SAE 10W-30, JASO T 903
engine oil
standard MA, Pro Honda GN4 4-stroke oil
(USA & Canada) or Honda 4-stroke oil, or
an equivalent motorcycle oil
After draining
After draining
and oil filter
Engine oil capacity
change
After
disassembly
Recommended
Honda DOT 3 or DOT 4 Brake Fluid
brake fluid
Recommended
drive chain Pro Honda HP Chain Lube or equivalent
lubricant
Drive chain slack 1 - 1 3/8 in (25 - 35 mm)
DID420NSD or RK420EL1
Standard drive
chain
No. of links 106
Drive sprocket
Standard sprocket
size
Driven sprocket
0.85 US qt (0.80 L)
0.90 US qt (0.85 L)
1.06 US qt (1.00 L)
14T
35T