Suggestions for Engine Problems already

[jpster]

Hi

Well I've had a couple of outings on the boat and enjoyed them although not caught a great deal!

I've already'ran into' my first problem which is now stopping me from going out.

Coming back from a outing I 'think' I hit something.. there is no damage from what the eye can see but I've now got the following problem so hoping for a bit of advice.

The engine starts up fine first off and is a mariner 2 stroke 60hp.

Putting the engine into gear and you can hear the rev's but the prop is not spinning (forward or reverse)

Been reading up and found that sometimes the props will need changing after a knock as something inside dislodges.. so tonight I've been and tried a spare prop I had onboard but the same... plenty of rev's and bubbles but looks like the prop still does not spin.

I had the engine tilted tonight when changing the prop and tried a few things to give a better idea of what the problem could be so with the testing I found:

in netural the prop spins both ways with my little finger.

Put the engine into gear and its still spinning but stiffer and if you spin it, it will come to a point when it's stuck but a little shove get's it spinning again.

I also noticed that putting the throttle into forward you could sort of hear something engaging around / behind the prop.. no idea if this is normal.

So any suggestions are welcome as I have just about 0 knowledge of engines and I don't want to miss out on to much fishing!

Cheers

JP

 

[The Jester]

Sounds like the shear pin JP. If you hit some thing the shear pin acts as a weak link, it shears before any major damage is caused to the gearbox. Hope you get sorted mate........

 

[big_sean]

Get it checked out properly as if there is any damage it could be easily fixed but if there is something which is left untreated it could wreck the whole engine



Sean

 

[mark]

it'll either be a shear pin or...


if its a splined prop and the rubber bushing inside the prop is goosed. either perished if its been out of the water a long time or sheared when you hit something

there'll be a few lugs on the bush that still catch enough to turn the prop

easy answer is to whip the prop off and have a loo

 

[jpster]

Thanks for the replies.. I don't think it's a shear pin as the prop and the metal bar it connects to both have teeth on them.

I did try a spare prop that didn't work either so the metal bar the prop slots onto does not spin when I put some power through the engine ... would be my best guess (technical explanation )

 

[davey g]

motor

motor

well id guess the sheer pin also but if the bar ur prop slots onto isnt turning also ad probably say u damaged ur gear box then where abouts do u live m8.

 

[jpster]

well id guess the sheer pin also but if the bar ur prop slots onto isnt turning also ad probably say u damaged ur gear box then where abouts do u live m8.

I live in Durham mate.. tried contacting a few companies but it's like getting blood from a stone to get answers, quotes and someone to come out and look... but thats for another post

 

[davey g]

motor

motor

i would of had a look with a mate for you if u had been a bit closer to me i live in ashington never mind hope you get it sorted ad imagine its the gear box tho have ago its not to hard u just need the tool to take the thrust bearing out from behind the prop to get into the gears.just read your other post totaly agree any company u email unless there gonna make a killing out of you there not interested

 

[jpster]

just been down to hartlepool again to have a look at the boat.. there is no shear pin.. no place for it to go. Its a splined prop and everything is still turning just not when power is given.

Popped into the marina and asked them for a number of anyone who knows about engines and I was given one so will give the chap a ring tomorrow and try get someone to come look!

 

[northeast1]

Well welcome to the boating world, you have to love it and hate it at the sametime but the good days make it worth while

 

[davey g]

just been down to hartlepool again to have a look at the boat.. there is no shear pin.. no place for it to go. Its a splined prop and everything is still turning just not when power is given.

Popped into the marina and asked them for a number of anyone who knows about engines and I was given one so will give the chap a ring tomorrow and try get someone to come look!

just checked mine m8 my shear pin is under the nut which holds the prop on it has 2 notches that stick up on the prop which the pin sits either sider of whick incase of what happened to u the pin should break instead of prop ad imaging it should have 1.

 

[jpster]

I took a couple of pics this afternoon:

I could not see where the shear pin could go when I had it apart.. although I didn't check the nut

 

[mark]

you couldn't find the shear pin cos it ain't got one!

castle nut to lock the prop on, the rubber bushing inside the prop is there do do the job of a shear pin (sort of)

if the bushing is fine, there's something amiss in the gearbox which it isn't a good thing generally

may sound obvious, but whats the gearbox oil level like?

 

[kingcod deano]

if the gearbox has gone there should be a slight knocking noise when the revs are on it it sounds alot like the rubber bush in the prop to me it happened a while back on my engine after i put a new prop on hey presto it worked try doing the small jobs first like changing the gearbox oil and prop

 

[Kev1n]

if the gearbox has gone there should be a slight knocking noise when the revs are on it it sounds alot like the rubber bush in the prop to me it happened a while back on my engine after i put a new prop on hey presto it worked try doing the small jobs first like changing the gearbox oil and prop

Sounds like the rubber bush to me too. Does the bush rotate inside the prop, does the splined shart rotate when the engine is running in gear - keep it in the water when checking though?

 

[jpster]

with the prop on.. that one or a spare one, if you spin the prop the metal shaft spins as well

I've not been able to see what.. if anything is spinning when the engine is on and has some power as there is just a lot of bubbles.. tried tilting the engine up a wee bit but still can't see.

 

[kingcod deano]

if the bush in the prop has gone what will happen is when you put a few revs on it will turn and you should reach a speed of about 5knts sometimes a little more but as soon as you add more revs the engine will sound like its reving like mad but you wont move thats because the prop is just spinning on the bush

 

[jpster]

Does anyone have a number / contact details for someone that would come out to see the boat to either repair / tell me if it's the gearbox for sure?

Been ringing around and either can't get in touch with the people I've been told about or same old problem about not getting back to me.. trying to spend money on getting everything fixed and no one wants my money

 

[big_sean]

I think its hardly unlikely that it is the bush in the hub of the props as he has tried two different props

ctc leisure are in your area and might be able to help

i have had no dealings with them personally so cant say good or bad


Sean

 

[jpster]

Incase anyone was interested

Found the problem in the end. Some lads working on a boat a few berths away helpped me pop the gearbox off a few days ago.

Took the gearbox to a fixer, got the oil out and started looking...

The metal shaft at the gearbox end has had the teeth grinded away and the gear that it was turning was snapped in 2 parts, glad I found the problem in the end anyway!

Now we are looking to see which is the cheaper option.. new parts or a new gearbox.. once the fixer gets back to me I will finally get it all sorted.