How long to service a Yanmar 2GM series engine?

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Honey Trap

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Last week I went to the local boatyard at the marina in the Netherlands where my boat, a Jeanneau Sun Odyssey 32.2, is currently berthed. I am having a number of jobs done in preparation for a trip to the Baltic starting in May.

I have received estimates for the work but one thing that I found a bit surprising was an estimate of three to four hours (at 60 euros an hour) to service the engine including checking valve clearances.

Would it really take so long to service the engine?

Many thanks,

Frank
 
It all depends on how many jobs you want doing; all the filters including fuel and water intake etc can take a while, as can running up the engine to warm the oil for an oil change. If you do the oil change and oil filter yourself, which is very easy, that can save time and ultimately help with the bill.
 
Valve clearences first as it should be done cold. 30 mins

Warm the engine in gear for 15 mins. Pela oil pump out in 5 mins filter change 5 mins. Run for 5 mins check for leaks and level.

Fuel filters can be fiddly an engineer should manage it in 30 mins.

Change or clear air filter 10 mins.

Change impellor 20 mins

Tea break 30 mins :rolleyes:

phone calls and chatting 30 mins :rolleyes:

Other checks and walking to the boat maybe an hour :rolleyes:

So 4 hours could be possible
 
Somebody said?

There's a risk. Who said that?

Do a bit of Googling there is quite a bit of info on the Cruisers forum http://www.cruisersforum.com/forums/f54/yanmar-2gm-km2-a-transmission-fluid-question-16800.html
(Can't get the pdf file from Yamnar to download properly.)

Reading through various postings the confusion may arise in that some gearboxes use the same oil as the engine but others use ATF. So whilst it may be correct to say the engine uses the same oil as the gearbox that is risking someone putting ATF in the engine, if their gearbox uses ATF.
Diesels engines need engine oil.
 
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10W grade takes the operating temp down to -20c >30c
10>40 covers -10c > 40c

Lakesailor said:
Somebody said?

There's a risk. Who said that?

Do a bit of Googling there is quite a bit of info on the Cruisers forum http://www.cruisersforum.com/forums/f54/yanmar-2gm-km2-a-transmission-fluid-question-16800.html
(Can't get the pdf file from Yamnar to download properly.)

Reading through various postings the confusion may arise in that some gearboxes use the same oil as the engine but others use ATF. So whilst it may be correct to say the engine uses the same oil as the gearbox that is risking someone putting ATF in the engine, if their gearbox uses ATF.
Diesels engines need engine oil.
Click to expand...
 
those tasks on my 4 cylinder yanmar take me around 1 hour, and I am no longer what I would call a dealership class mechanic - 45 years ago was another story.

so for a good mechanic on a two cylinder engine that he can see - jeanneau are good on access - 1 hour tops plus time to get to and fro the boat.

find your gearbox oil type here

http://www.yanmarhelp.com/i_box2.htm
 
The hardest thing on my 2gm is the internal anodes, they are in not very accessible places ( On my boat) and can take up to an hour. Oil and filter on a warm engine is a matter of ten minutes, fuel filters another ten minutes, tappets (cold ) check and adjust five minutes, bleed through and test run ten minutes.
Total approximately 1hr 35mins.
+ tea drinking and not being able to find correct socket or ring spanner, seeking plasters to cover gouged knuckles and eventually using SWMBO's best tea towel to soak up blood/diesel/engine oil mixture from bilges, rolling a fag and cursing loudly about miniature japanese engines = One morning and a visit to the Doctor for top up Tetanus jab. One whole day well spent !
 
GrumpyOldGit said:
The hardest thing on my 2gm is the internal anodes, they are in not very accessible places ( On my boat) and can take up to an hour. Oil and filter on a warm engine is a matter of ten minutes, fuel filters another ten minutes, tappets (cold ) check and adjust five minutes, bleed through and test run ten minutes.
Total approximately 1hr 35mins.
+ tea drinking and not being able to find correct socket or ring spanner, seeking plasters to cover gouged knuckles and eventually using SWMBO's best tea towel to soak up blood/diesel/engine oil mixture from bilges, rolling a fag and cursing loudly about miniature japanese engines = One morning and a visit to the Doctor for top up Tetanus jab. One whole day well spent !
Click to expand...

sounds about par for the job (at my age) plus I need a good day to get the motivation to do it and another day to look up all the swear words I ve fogotten just in case I need them to motivate the engine.
 
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Honey Trap said:
Last week I went to the local boatyard at the marina in the Netherlands where my boat, a Jeanneau Sun Odyssey 32.2, is currently berthed. I am having a number of jobs done in preparation for a trip to the Baltic starting in May.

I have received estimates for the work but one thing that I found a bit surprising was an estimate of three to four hours (at 60 euros an hour) to service the engine including checking valve clearances.

Would it really take so long to service the engine?

Many thanks,

Frank
Click to expand...


No. Oil, oil filter, valve clearances, change impellor, maybe tension belts. I used to have a 2GM and I reckon that lot used to take me between 1 hour and 2. But then I am not including the time taken to get there, get back to base, take the EU mandated coffee break etc.

Fix the service for a day you can be there to watch. Its soi simple you should be doing it yourself anyway.
 
wotayottie said:
No. Oil, oil filter, valve clearances, change impellor, maybe tension belts. I used to have a 2GM and I reckon that lot used to take me between 1 hour and 2. But then I am not including the time taken to get there, get back to base, take the EU mandated coffee break etc.

Fix the service for a day you can be there to watch. Its soi simple you should be doing it yourself anyway.
Click to expand...

valve clearance only need checking after a few hundred hrs after the first service, not every service
 
Then there's fighting the damaged screws out of the pump to get to the impeller; fitting a new intake hose 'cos it split when you took it off to get to the pump; finding a new "o"ring for the secondary fuel filter 'cos it won't seal; wiping up the spilt oil from filter removal and refilling; freeing off the seized spring on the gear change; cleaning the concreted crud out of the fuel filter drain hole ....... it goes on and on.
 
Well, yes, all those things can happen but would be charged extra to the service. My experience of a marine engineer servicing an engine is that they may not do what they have charged for unless you stand over them and that there is no assurance that the engine will work after they have finished! My engine was "de-winterised, checked and serviced" before I collected the boat for the delivery trip home. The engine ran for 20 minutes before the soft, rotting fuel lines let enough air in to stop it. The list of parts extra to the service included two parts which are not in the engine parts list and defy comprehension.

It is essential that you learn to fix the basics on your engine if you are going to rely on it, so the servicing is an excellent place to start.

Rob.
 
The beauty about doing it yourself ( apart from 4 x 60e Duvel tokens) is that you get an idea of how the engine is wearing and where its important bits are, and you notice stuff..
Takes me an hour including a POT of tea, but then the beauty of a cruising boat is that we carry ( dont we?) all the right spares and tools for the particular engine anyway..
 
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