Reverse

[AJ__17@BELLSOUTH.NET]

Hello I just recently purchased a mako center console w/ a good solid evinrude 120 horse attached to it ( Great compression, forward, gauges). I took it out the other day and when i put it in reverse, it was going forward.... i really dont want to replace the lower unit but if need be i will. also the serial plate of motor is missing, so the model id for the motor is missing. Any help on where i should start to look for the problem? <br />ps: ive located the freeze plug numbers, but i dont know how to interpret them.<br />thnx Art

 

[OBJ]

Re: Reverse

Welcome Art!<br /><br />Post the numbers on the freeze plug and we'll see what we can come for you on the year. If the engine was the original engine on the boat, the year of the boat can get us close if not on.<br /><br />Reverse....or lack of.....first thing you want to do is pull the cover off the engine and have a helper shift into forward while you look at the shift cable at the engine, spin the prop while doing this so the lobes will mesh. What your looking for is movment at the shift cable on the engine to shift the linkage into forward. Now do the same for reverse and notice if the cable is moving in the opposite direction. If not, the problem is in the control box.<br /><br />You can also disconnect the shift cable from the engine and shift the shift lever on the engine by hand, again spinning the prop as you do so and see if both gears engage.<br /><br />The shift lever on the engine should be near vertical with the engine in neutral....just something else to check.<br /><br />Do you know if any work has been done on the lower unit prior to you buying the rig? Did the previous owner know of this problem?<br /><br />And if you don't have one, get a service manual for the engine. Will save you hours of scratching your head as well as help you on problems like this.<br /><br />Stay in touch.

 

[AJ__17@BELLSOUTH.NET]

Re: Reverse

OK thanks, and to answer the question of if the motor was previously worked on, im not really sure. But i do know that when i purchased the boat we went out for a test drive and when in reverse it wasnt going fully into reverse, but the guy that sold it to me said that it wasnt a major problem, (only needed a carb cleaning at the time) but i know that it has 4 carbs and it a V4, im not sure it that says much, but i will post the freeze plug numbers up here shortly, <br />thnx Again<br />Art

 

[AJ__17@BELLSOUTH.NET]

Re: Reverse

HEY its Art again, I wan't able to do the 2 man diag. just yet , but I did manage to pull those numbers off of the freeze plug and they are as follows:<br /><br />RPH<br />0432807<br /><br />TNX AGAIN<br />And if I do need to purchase a used lower unit, would you know where i could pick one up from ?

 

[MCM]

Re: Reverse

Art, the freeze plug should have 2 sets of #'s one wil be the model#, the other is the serial#.<br /><br />Where was the plug that contained the # you posted located?

 

[MCM]

Re: Reverse

As near as I can tell the #'s you provided are the part#'s for the crankase assembly. I did find that that # was superceded to p/n 0436006

 

[rodbolt]

Re: Reverse

the RPH indicates its a replacement power head, look for a decal with the model numbers on the port side of the transom bracket or swivel housing.<br /> if they are missing we are goung to ask a lot of questions to figgure out the model range.<br /> the 85-86 had a bit different accessories than the 87-89. changed a bit more about 90-91 and again in 95.<br />the lower units really did not change much on the 90* v4 looper except for 20" and 25" shaft had some differences through the years, but that unit is easy to overhaul or change a shift clutch and reverse gear.

 

[ezeke]

Re: Reverse

Could be a CX (Counter Rotation) model with the wrong prop.

 

[AJ__17@BELLSOUTH.NET]

Re: Reverse

i actually have a 1977 Mako, but i dont think that it has the original motor attached to it though. I guy told me that the reverse gear could be worn, and the holes on it can be rounded out... i managed to find some numbers around where the spark plugs are housed, could these numbers be of any use? but again, if i have to replace the lower unit, are there any wholesale used lots of parts availible to me ? <br />thx again,<br /><br /><br />~ART~ THE NOVICE FISHERMAN

 

[MCM]

Re: Reverse

What are the #'s. There are lots of places including ebay that have parts, even whole lower units but their not going to be of any help until you know what motor your trying to replace parts for, does that make sense

 

[AJ__17@BELLSOUTH.NET]

Re: Reverse

All right sorry about the short delay of web postings, but i did manage to find some #'s....<br /><br />I HAVE 2 SETS OF SPARK PLUGS, ONE ON THE LEFT AND ONE ON THE RIGHT.. ON BOTH, BETWEEN THE 2 SPARK PLUGS THE NUMBERS<br />533686-2, ARE PRINTED ON THE BLOCK.<br /><br />THERE IS A TRAPAZIOD SHAPED BOX JUST BEHING THE BIG CIRCULAR GEAR ON TOP ON THE MOTOR THAT SITS BETWEEN, BUT ABOVE THE TWO SET OF SPARK PLUGS,<br />AND READS <br />583904<br />19EO -OA<br /><br />thnx again for any assistance, in solving the mystery year of this motor.<br />ART- The Novice Fisherman

 

[Bill Mattor]

Re: Reverse

Just a though. Worn clutch dog?

 

[AJ__17@BELLSOUTH.NET]

Re: Reverse

Are these numbers helpful in finding what exactly what my motor is ? <br />Clutch?.... I dont know what or where that is...<br />but I just may as well try to buy a new lower unit all together, but first finding what year it is.<br />B

 

[AJ__17@BELLSOUTH.NET]

Re: Reverse

 

[AJ__17@BELLSOUTH.NET]

Re: Reverse

 

[AJ__17@BELLSOUTH.NET]

Re: Reverse

 

[MCM]

Re: Reverse

Nope, maybe if you can post a few pics some one may be able to identify it or get real close, the problem with parts and their #'s is frequently they're used on multiple yrs. & hp's.

 

[dafox99]

Re: Reverse

While you are trying to get some pics, take a moment and try the procedure OBJ mentioned. You absolutely need to find out what motor you have, but you may get it in reverse quickly if you simply have a cable or linkage out of adjustment.

 

[OBJ]

Re: Reverse

None of the numbers you posted show up as a part number Art. 120's were around from 85' to 94' so that gives us a range of years. We can maybe narrow it down a couple more years by looking at the electrical bracket cover. This is on top of the block right in back of the flywheel. If it's flat, this would indicate a year between 85' and 87'. If it's a raised cover...from 88' to 94'. Gives us a place to start anyways.

 

[MCM]

Re: Reverse

Well according to Ishopmarine, that replacement power head #0432807 shows as being a 120 hp. commercial motor, which would explain its nearly $4000.00 price tag, they suggest contacting BRP to find the specific year of application though.