My 87 3.0 merc trim seems to be working good but I want to make sure it's adjusted right . I read something about 21 3/4 " measurement on the trim cylinder. Where do you take these measurements from?
The distance is measured between the centres of the two steel pins that mount the hydralic rams (one at each end of the ram), they usually have black plastic caps on them to make everything look pretty!!
I have downloaded different sections but this is this the first I've heard of how to adjust the trim. I do search these threads before I ask but haven't been able to find this answer. Thanks for all the help you've given me Don.
Trim limit is the maximum amount the drive can be trimmed up for running, the rest of the up movement is TILT. There is no limit control on how high they will go, short of spacers in the trim cylinders.
No, the limit is mainly for safe operation of the ujoints at higher engine rpms.
and that is the relationship between the transom shield and the drive. It's just a safety feature, and many don't even have it set or it doesn't work.
I adjusted it out and took it out today and it really helped.The boat was much lighter in the water. It has never run better. It sure is great to have all your hard work pay off.
