Honda CRF50F 2017 Owner's Manual page 15

While age provides a guide to general
ability to ride and throttle limiter setting,
there are other factors such as individual
ability, training and the level of supervision
provision provided.
The following table provides a guide to
performance limiting device settings for
general use.
Speed limiting
Age range
device setting
years km/h
6 to 8 20
8 to 11 30
11 to 14 50
At all times, the maximum weight capacity
limit of 40kg should be respected.
4
Throttle limiter
screw measurement
mph mm in
12 2.0 0.08
19 4.0 0.16
31 14.0 0.55
Throttle limiter settings will also need to
take into account requirements for safe use
by an experienced rider.
The maximum speeds attainable with a
particular setting can vary considerably on
different surfaces.
Performance requirements on soft rough
ground will be greater than those required
on dry hard tracks; reducing performance
unnecessarily may affect ability to climb
gradients or overcome obstacles, leading to
instability.
Before each ride, check the throttle limiter
screw measurement and the restriction of
throttle grip movement.