97. The board of directors, after informing a member of the grounds invoked for his suspension or expulsion and giving him an opportunity to present observations, may suspend or expel him if(1) he does not comply with the by-laws of the credit union;
(2) he fails to fulfil his undertakings toward the credit union;
(3) on two or more occasions, he presents or issues a cheque without sufficient funds;
(4) despite a notice from the credit union, he allows a savings account to remain overdrawn.