Damien Lane
New member
hi i was wondering my 1961 evinrude lark 3 has a 10 1/2" x 13" prop but has listed a 10 3/8" x 14" prop as the standard prop for this model would this be making a big difference. the motor seems to be pushing water straight up and not pushing a 13 foot boat up on the plane struggles at about 10 knots but motor sounds healthy and is reliable!