HONDA CRF50F - Manual (Page 141)

CR6HSA (NGK)
4.058
3.272
1.667
1.190
U20FSR-U (DENSO)
2.642
chain
0.002 in
(0.05 mm)
0.002 in
(0.05 mm)
CR5HSA (NGK)
U16FSR-U (DENSO)
CR7HSA (NGK)
U22FSR-U (DENSO)
0.024 0.028 in
(0.60 0.70 mm)
1,700 100 rpm
or
or
Intake:
Exhaust:
or
Primary reduction
Gear ratio, 1st
2nd
3rd
Final reduction
Final drive Valve clearance
(cold)
Spark plug
(standard)
Spark plug
(cold climate;
below 5°C, 41°F)
Spark plug
(extended high
speed riding)
Spark plug gap
Idle speed
Engine Specifications Power Transmission
133
Specifications
Technical Information