2001 yamaha 150 hpdi vz150ltr

[justinchandler]

I have had a few boats in my short 7 years of fishing. Every one of them gave me nothing but great memories....a Dynatrak, Skeeter, Triton, and now back to a Skeeter. I have to say a Skeeter is my favorite bar none.

Well, not too long ago i hit a stump with my prop. No big deal right? I didnt think so until 4 hours later my lower unit ran out of lube due to a leaking seal. Needless to say, my gears suffered damage along with my prop shaft.

A few days later my LU was at the shop, and shortly after, back on the boat ready to rock and roll. I fished a few times out of her with no issues. Then, one afternoon, I lost neutral and reverse and all I had was forward. My mechanic had warrantied his work and stood by it.

Again, the lower unit was back at the shop for evaluation and repair. My mechanic said the shift pin had come out of position and it caused my clutch dog and gears to again be ate up. Im thinking, good grief, can it get any worse? Little did I know, it could and did.

After 2 weeks of waiting and waiting, the parts finally came in and the work was done. So here I am today, excited about picking the boat up. I get her loaded up, grab the wifey (so she can lay out), a couple rods, and I am goin' fishing. Get the boat in the water and crank her up...smooth as silk. Put it in gear.....smooth as silk. I get on the gas and she stands straight up....having a VERY hard time getting on plane. I dont know if this was due to the 20mph winds at my back, the waves, or what....but I know it was trimmed down. Something just didnt feel right. "It's in your head I said".....give her some juice......so I did....heard some funny noises, she planed off, and less than 2 miles down river, my forward and pinion gears have a "come-apart". Again, I have lost my 3rd set of gears.

I called my mechanic up again and he said bring it over right away. All he can assume is that the was some slack in the shift cable and it threw it in and out of gear and a high speed. I dont know. I heard some weird noises before ever planing off, I have noticed a slight "lay back" on one of the ears of the prop. Can anyone give me some sort of hope??? Anyone have any ideas??? I don't think I could be any more frustrated than what I am today.
Could the slightly layed back ear of the prop be the root to this problem??? Causing torque in a way it shouldnt? Everything has been great until it gets under load.

 

[rodbolt]

Re: 2001 yamaha 150 hpdi vz150ltr

I think you need to find a better trained technician.
if assembled correctly thats a simple bullet proof gearcase.
SEI sells them new with a 3 year warrenty for about 800 dollars.
wasnt a shift cable and its not a slightly bent prop blade.
if it was assembled correctly that shift pin simply cannot come out.
usually I buy a new case after a failure like that cause it takes out every bearing,every gear and the drive shaft bearing surfaces.

 

[justinchandler]

Re: 2001 yamaha 150 hpdi vz150ltr

Could this be a linkage problem???....he is the best mechanic around.......could play in the linkage be caused by me hitting the stump....if so....could the play in the linkage cause the lower unit to be slipping in and out of gear and eating the gears up??....both times it was "fixed", it didnt last long....the is a problem outside the lower unit in my opinion.....something is causing it to tear up....he is not a bad mechanic.....he did admit however, that he hadnt check the linkage...said he would tues....i am wondering if there is anyway to check it myself?

 

[rodbolt]

Re: 2001 yamaha 150 hpdi vz150ltr

nope.
hitting a stump wont cause intermittant linkage failures and would have noting to do with the clutch cross pin or internal linkage.
does he at least have drive train certificates on the wall from yamaha?
does he have the correct driveshaft and fwd and rev gear shimming tools AND the factory yamaha manual?

 

[justinchandler]

Re: 2001 yamaha 150 hpdi vz150ltr

I found that I am missing my top cotter pin on (12). I think this may be the reason my LU has sheared the last 2 times. The first time was due to my seal leaking LU dope after I hit the stump. I know that for sure. Maybe somewhere, somehow, someone took that cotter pin out to check something or it may be that it just came out, who knows, but I think that missing that pin would cause linkage problems considering when i found it, my cable was halfway off the shift arm. Would this not allow it to slip in and out of gear and tear it up?

http://parts.yamaha-motor.com/partimage.gifx?d=9510,2,0,outboard

 

[rodbolt]

Re: 2001 yamaha 150 hpdi vz150ltr

the ONLY reason for the shift cut switch on the shift slide is to allow the clutch to come OUT of an in gear position.
once the clutch is moved to any in gear position the cable is no longer nessasary.
the shift slide balls and the back draft cut on the dogs keep the clutch and gear together.
all the cable does is move the clutch it does NOT hold the clutch in place.

 

[justinchandler]

Re: 2001 yamaha 150 hpdi vz150ltr

but if my shift cable has loosened or the nut has backed off....it may not be putting it into gear all the way.....you sure are bound and determined to shoot down any idea I have aren't you......if what I have found is not whats wrong with it, then what is?

 

[rodbolt]

Re: 2001 yamaha 150 hpdi vz150ltr

if your sure its a cable then simply adjust it, use a paper clip or a nail as a temporary clip and go test it.
but I suspect incorrect gear assy.
typically with a loss of lube failure the drive shaft bearing surface is bad requireing special tools to reshim the new driveshaft and bearing assy.
typically loss of lube destroys the fwd rev and pinion gears and bearings requireing special tools to correctly shim the fwd and rev gears to obtain the correct gear tooth contact patten and backlash.
the gears are ALWAY in mesh and turning anytime the drive shaft turns.
if the clutch is popping in and out of gear it feels like some one is whacking the back of the boat with a bat.
the shift clutch also ONLY works one way and that direction is marked on the clutch, it will fit either way but only work correctly one way.
wont be the first time I ever saw one installed backwards.

 

[justinchandler]

Re: 2001 yamaha 150 hpdi vz150ltr

how do i know how far to adjust it though.....i have looked everywhere online for a guide.....i know there is very little tolerance and it has to be almost exact to work right.......if i could rule out linkage...i would order a SEI unit and be done with it

 

[rodbolt]

Re: 2001 yamaha 150 hpdi vz150ltr

look closly at the shift slide.
there is a line on it.
in nuetral the shift post should line up with the mark on the slide.

 

[justinchandler]

Re: 2001 yamaha 150 hpdi vz150ltr

So if that lines up, and i put a pair of vice grips on the piece in the midcase and see it is turning each way....then more than likely i should get an SEI?