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Old 06 July 2019, 06:56   #1
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Yamaha me421 manual?

Does anyone have a workshop manual for a yamaha me421sti? Been searching everywhere and can't seem to get one..

Thanks in advance
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Old 10 July 2019, 05:15   #2
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hi, try here for you manual
http://marine.manualsonline.com/manuals/mfg/yamaha/yamaha_outboard_motor_product_list.html

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Old 10 July 2019, 11:45   #3
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I think the manual is available online to Yamaha agents so quite difficult to get hold of a paper copy. I got a copy printed from BHG years ago, Davie here on the forum will have access to it & might print you a copy if his printer is up to it but its many pages long so a bit of a pita to do.
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Old 10 July 2019, 14:48   #4
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hi, try here for you manual
http://marine.manualsonline.com/manuals/mfg/yamaha/yamaha_outboard_motor_product_list.html

tamsbairn
Thanks for the link but there's no manual for a me421.


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I think the manual is available online to Yamaha agents so quite difficult to get hold of a paper copy. I got a copy printed from BHG years ago, Davie here on the forum will have access to it & might print you a copy if his printer is up to it but its many pages long so a bit of a pita to do.
Thanks for the info - I don't mind paying for a copy.. If anyone has one, currently got the engine out the boat atm and like to check a few things
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Old 10 July 2019, 15:05   #5
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Thanks for the link but there's no manual for a me421.




Thanks for the info - I don't mind paying for a copy.. If anyone has one, currently got the engine out the boat atm and like to check a few things
You probably know the base engine is a toyota landcruiser so if its engine specific data you need then an engine manual for a landcruiser HDJ 80series will give torque setting and other engine data or the Yanmar 6lp 260hp is the same base engine I think the 6lp engine manual is available for free download
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Old 10 July 2019, 18:36   #6
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[QUOTE=Gareth231;798687]Thanks for the link but there's no manual

it was worth a try, sorry
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Old 12 July 2019, 15:35   #7
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You probably know the base engine is a toyota landcruiser so if its engine specific data you need then an engine manual for a landcruiser HDJ 80series will give torque setting and other engine data or the Yanmar 6lp 260hp is the same base engine I think the 6lp engine manual is available for free download
Thank you for the info, I downloaded the 6lp manual and from what I can see theres quite a bit difference between them - 24v compared to 12v, although the bottom end does looks v similar.

If anyone has a copy please let know
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Old 12 July 2019, 16:24   #8
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If you Google Toyota RM172e Manual, you will get a few links to a PDF of the Land Cruiser engine repair manual which covers the 12V.
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Old 12 July 2019, 19:04   #9
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Thank you for the info, I downloaded the 6lp manual and from what I can see theres quite a bit difference between them - 24v compared to 12v, although the bottom end does looks v similar.

If anyone has a copy please let know
If you read the 6lp manual carefully it covers both 12 & 24V engines the 12v is the 6lp dte and the 24v is 6lp ste you will find repair specs for both in the manual but they are lumped together you you need to find the references to each individual engine
The head is the only difference everything below the headgasket is identical hence you will only see reference to the 260hp dte in the head repair section
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Old 21 July 2019, 13:03   #10
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If you read the 6lp manual carefully it covers both 12 & 24V engines the 12v is the 6lp dte and the 24v is 6lp ste you will find repair specs for both in the manual but they are lumped together you you need to find the references to each individual engine
The head is the only difference everything below the headgasket is identical hence you will only see reference to the 260hp dte in the head repair section
Thank you, I didn't realise it covered both..

Any idea what stock boost pressure is for one of these? And how boost pressure is controlled as mine is the later 421sti which doesn't have a pressure controlling valve like the 420sti..

Still looking for a 421sti manual if anyone has one..
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Old 21 July 2019, 14:41   #11
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I have one, possibly a spare.

let me get back to you
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Old 21 July 2019, 18:08   #12
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its owners manuals I have. one for a 422 and one for a 421.

Nothing mentioned in it about your issue
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Old 22 July 2019, 04:44   #13
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I have one, possibly a spare.

let me get back to you
I'm really looking for a workshop manual..

Guess the operator manual is more routine maintenance oil's to use etc?

Thanks for looking anyway
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Old 22 July 2019, 05:07   #14
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I have one but im away until later in the week I can probably look up the info you need when Im home if your not sorted by then
Maybe drop me a pm friday if your not sorted by then
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Old 22 July 2019, 16:21   #15
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I have one but im away until later in the week I can probably look up the info you need when Im home if your not sorted by then
Maybe drop me a pm friday if your not sorted by then

Thanks beamishken I drop you a pm on Friday
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Old 04 August 2019, 08:09   #16
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Hi Gareth
Did you get hold of one. If so was it electronically sent? Would love a copy if thatís possible.
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Old 04 August 2019, 08:51   #17
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RBJT I have a paper copy of the 420sti manual, I notice your in largs we're just in west kilbride your welcome to borrow my paper copy and scan it if you like & maybe email it to Gareth once copied
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Hi Gareth
Did you get hold of one. If so was it electronically sent? Would love a copy if thatís possible.
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