1. Mode of Delivery
The Umpire shall indicate to the Striker whether the Bowler intends
to bowl over or round the wicket, overarm or underarm, or
right or left-handed. Failure on the part of the Bowler to indicate
in advance a change in his mode of delivery is unfair and
the Umpire shall call and signal "no ball".
2. Fair Delivery - The Arm
For a delivery to be fair the ball must be bowled not thrown--see
Note (a) below. If either Umpire is not entirely
satisfied with the absolute fairness of a delivery in this respect he shall
call and signal "no ball" instantly upon delivery.
3. Fair Delivery - The Feet
The Umpire at the bowler's wicket shall call and signal "no ball"
if he is not satisfied that in the delivery stride:-
(a) the Bowler's back foot has landed within and not touching
the return crease or its forward extension
or
(b) some part of the front foot whether grounded or raised was
behind the popping crease.
4. Bowler Throwing at Striker's Wicket Before
Delivery
If the Bowler, before delivering the ball, throws it at the
Striker's wicket in an attempt to run him out, the Umpire shall
call and signal "no ball". See
Law 42.12. (Batsman Unfairly Stealing a Run) and
Law 38. (Run Out).
5. Bowler Attempting to Run Out Non-Striker Before
Delivery
If the Bowler, before delivering the ball, attempts to run out
the non-Striker, any runs which result shall be allowed and shall
be scored as no balls. Such an attempt shall not count as a ball
in the over. The Umpire shall not call "no ball".
See Law 42.2. (Batsman Unfairly
Stealing a Run).
6. Infringement of Laws by a Wicket-Keeper or a Fieldsman
The Umpire shall call and signal "no ball" in the event of the
Wicket-Keeper infringing 
