Transom. motor question

[WDC]

Transom Motor Question:<br /><br />Boat : 1970 18 foot Glastron, 1973 85 hp Johnson<br /><br />I am getting my boat ready to go in the water in a week or two by reading the manuals and reading the FAQ section for boats. I am currently replacing my water pump.<br /><br />My question is the motor appears to be guided onto the transom with a long bolt that seems to hold the motor in place. How do you know where to place the bolt. There are a few choices on where the bolt can be placed. It looks like some type of motor adjuster. A need help in where to place the bolt and understanding the terminology.<br /><br />WDC

 

[DJ]

Re: Transom. motor question

WDC,<br /><br />There are FOUR bolts that hold the engine to the transom.<br /><br />There are numerous holes, true. The holes are to adjust the engine height. Start by mounting the engine in the top most hole (deepest) in the mounting bracket.<br /><br />You can raise the engine, from there, depending on performance.<br /><br />Congrat's on realizing the water pump needs service.<br /><br />I spent countless hours skiing/fishing with that very engine. It is truly one of OMC's "sweethaearts".<br /><br />Treat it well and it will run-forever.<br /><br />Decarb it and start with a 13 1/4" X 17" prop.<br /><br />See decarb info. below.<br /><br /><br /> http://forums.iboats.com/cgi-bin/ubb/ultimatebb.cgi?ubb=get_topic;f=36;t=000016

 

[WDC]

Re: Transom. motor question

Thank You for your help. I plan to take very good care of it.

 

[emdsapmgr]

Re: Transom. motor question

I think the bolt you describe is actually the thrust pin. This is an anjustment for the trim/running attitude of the engine. It is moveable for owner's handling preferences. If the engine has power trim, the pin should be in the bottom hole. If no power trim, my guess is that you will find optimal performance/speed/handling when the you put the pin through the holes so that the engine is perpendicular to the water when at running speed.