Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 19Get this manual
Trim "Out" Angle Adjustment 1The trim "Out" limit switch is pre-adjusted at the
AWARNING
The trimOut" limit switch MUST NEVER BE SET so that there Is less than 1-12 in(38mm) engagement of the swivel bracket In the transom brackets, as shown
factory to maximum allowab le tra ve lWhen trimmed to this maximum trim angle, some boat! motor combinations may exhibit undesirable handling characteristicsIf thi condition is experiencedit wi ll be necessary to readju st the trim
out limit switch to reduce the amount of trim travel
2If trim out adjustment is necessary, loosen clamp and rotate switch as shown Retighten clamps and retest boat at maximum trim angle for handling quality