That is determined by the size, and build of a person, but yes they can legally sit in the front.
A six year old can be placed in the front seat but they must use a booster seat if they are under 135cm tall. Under no circumstances should a rear facing booster seat be used in the front seat.
A 9 year old child can ride in the front seat of a car. It is important that they are buckled in and can sit still.
To remove the seat from a Yamaha Virago 1100, first, locate the seat release mechanism, typically found at the back of the seat. Depending on the model year, you may need to unscrew a bolt or pull a latch. Once released, gently lift the seat from the front and slide it off the mounting brackets. Be sure to store any removed hardware safely for reinstallation.
Use your key on the left side by the seat. turn it counterclockwise. and the front seat should pull off. Once you remove the front seat there are two releases to remove the rear seat.
yes
yes
no
No
it is not the matter of age you can sit in the front seat when you are 1 year also.
With a car seat to boost them up, Yes.
To remove the seat from a Honda V65, first locate the seat release mechanism, which is typically found under the rear of the seat. You may need to unlock or unscrew a fastener, depending on the model year. Once the mechanism is disengaged, gently lift the rear of the seat upward and slide it backward to detach it from the hooks at the front. Ensure all cables or connections are safely disconnected if applicable.
In the UK yes, but if they are under 140 centimetres tall, they are required to use a booster seat/child seat. (But that goes for the back of the car, as well as the front).