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Suzuki 20 hour service

Old 05-31-2019, 02:40 AM
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Default Suzuki 20 hour service

Time for my 20 hour service for my Suzuki. Isn't it just oil and filter change? If so, any reason not to perform the service myself? Planning on using only suzuki oil and filter. Will keep receipts for records.
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Old 05-31-2019, 03:02 AM
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I've never owned a Suzuki but I know with Yamaha 20 hr. service requires changing the gear lube in the lower unit. Also I've seen lots of threads regarding the driveshaft on Suzuki's getting stuck in the powerhead and a grease fitting that has been added on some models to prevent that. I'm certain plenty of Suzuki owners will chime in.
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Old 05-31-2019, 03:21 AM
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Originally Posted by tarpononecharter View Post
I've never owned a Suzuki but I know with Yamaha 20 hr. service requires changing the gear lube in the lower unit. Also I've seen lots of threads regarding the driveshaft on Suzuki's getting stuck in the powerhead and a grease fitting that has been added on some models to prevent that. I'm certain plenty of Suzuki owners will chime in.
No problem doing the lower either, if need be. Just wondering about any complications with warranty if doing myself.
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Old 05-31-2019, 03:25 AM
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I will be doing my 20 hour service myself this weekend on my df200s. I was told by my dealer that it does not effect warranty if performed by myself
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Old 05-31-2019, 06:29 AM
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Originally Posted by Seacraft25 View Post
I will be doing my 20 hour service myself this weekend on my df200s. I was told by my dealer that it does not effect warranty if performed by myself
It will not affect the warranty at all per my dealer and Suzuki corporate, however, you need to keep all receipts for proof of service performed just in case.
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Old 05-31-2019, 06:38 AM
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Which motor do you have? This is for the DF250-300's...can be found in the manual.


Last edited by BlueShamu; 05-31-2019 at 06:49 AM. Reason: Added Maintenance Schedule
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Old 05-31-2019, 07:06 AM
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Originally Posted by BlueShamu View Post
Which motor do you have? This is for the DF250-300's...can be found in the manual.
Just curious, when does Zuke require spark plug replacement?
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Old 05-31-2019, 08:16 AM
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I did my 20hr Suzuki Service myself. I used Suzuki Oil and Filter, Quick Silver LU Gear Oil. Kept all the receipts.

My Dealer said there was no issue in doing so.
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Old 05-31-2019, 08:40 AM
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I am a big fan of DIY service. If you do it yourself, be sure to keep all the receipts, take photos, document your work.

All things considered, though, the 20 hour service might be the right one to let the dealer do. That way if you have any "new motor issues" in the first 100 hours, there is going to be no question about who performed the initial inspection/service, was it done correctly, etc, etc. You'll also establish a relationship with the dealer you'll have to take it to if you have any warranty issues that crop up.
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Old 05-31-2019, 08:44 AM
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Did my T140's there are a bunch of utube videos to watch it was easy just take your time and save 100-200 dollars
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Old 05-31-2019, 08:31 PM
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Originally Posted by Flot View Post
I am a big fan of DIY service. If you do it yourself, be sure to keep all the receipts, take photos, document your work.

All things considered, though, the 20 hour service might be the right one to let the dealer do. That way if you have any "new motor issues" in the first 100 hours, there is going to be no question about who performed the initial inspection/service, was it done correctly, etc, etc. You'll also establish a relationship with the dealer you'll have to take it to if you have any warranty issues that crop up.
This is what I did with my DF175AP's. Let the dealer service them and look them over and I'll do the regular stuff from here on out.
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Old 05-31-2019, 09:18 PM
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Originally Posted by InCogKneeToe View Post
I did my 20hr Suzuki Service myself. I used Suzuki Oil and Filter, Quick Silver LU Gear Oil. Kept all the receipts.

My Dealer said there was no issue in doing so.
Is the QuickSilver gear lube rated for your type of engine lower unit?
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Old 05-31-2019, 09:32 PM
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Originally Posted by tarpononecharter View Post
Just curious, when does Zuke require spark plug replacement?
See the table--first line: every 100 hours or 12 months--"Inspect and clean, Adjust,...or replace." If the plugs look good--don't need to change them.
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Old 05-31-2019, 11:36 PM
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Originally Posted by Blazer7420 View Post
Is the QuickSilver gear lube rated for your type of engine lower unit?
technically no it isn’t but people use it, even my Suzuki dealer uses it and swears by it. I still went with Suzuki oil though just for the fact that if something did go wrong they couldn’t blame it on non factory stuff. Suzuki “requires” gl 5 oil, Mercury is gl 4.
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Old 06-01-2019, 01:29 AM
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Zukes are easy to maintain, compared to some other outboards. I usually do every odd 100 hr service myself, then let the dealer do the even 100 hr service. Which is usually an impeller replacement. I don't like dropping those heavy LUs by myself.
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Old 06-01-2019, 02:09 AM
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I just had my 20 hour service. Mine was free because I signed up for a Suzuki promotion that was going on in February. It would have costed $703 for two 300s. I will do my next service myself I think. Where can you get parts other than Suzuki dealers?
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Old 06-01-2019, 02:17 AM
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Originally Posted by R-KID View Post
I just had my 20 hour service. Mine was free because I signed up for a Suzuki promotion that was going on in February. It would have costed $703 for two 300s. I will do my next service myself I think. Where can you get parts other than Suzuki dealers?
Boats.net
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Old 06-01-2019, 02:21 AM
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Originally Posted by wizness View Post

technically no it isn’t but people use it, even my Suzuki dealer uses it and swears by it. I still went with Suzuki oil though just for the fact that if something did go wrong they couldn’t blame it on non factory stuff. Suzuki “requires” gl 5 oil, Mercury is gl 4.
Just be aware that GL4 rated lubes are for one type of lower and GL5 lubes are rated for a different type of lower.
In Yamaha a GL4 is used in most lowers.
The GL5 is rated for the F350. XF425. F300 and some others.
Most lower unit failures are due to improper filling, wrong lube and fishing line.
They generally don't fail on their own.
The lowers are designed to run as spec'd.
Any of the above isn't as spec'd the life of the lower is severely diminished.
Plus, who actually checks the lube level mid service recommendations?
Lower could loose fluid due to heat, level drops as does lubricity. Blown lower.
I highly recommend checking fluid more often than 100 hr's and changing in high HP engines running hard.
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Old 06-01-2019, 04:14 AM
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Originally Posted by Parker Yacht View Post
Just be aware that GL4 rated lubes are for one type of lower and GL5 lubes are rated for a different type of lower.
In Yamaha a GL4 is used in most lowers.
The GL5 is rated for the F350. XF425. F300 and some others.
Most lower unit failures are due to improper filling, wrong lube and fishing line.
They generally don't fail on their own.
The lowers are designed to run as spec'd.
Any of the above isn't as spec'd the life of the lower is severely diminished.
Plus, who actually checks the lube level mid service recommendations?
Lower could loose fluid due to heat, level drops as does lubricity. Blown lower.
I highly recommend checking fluid more often than 100 hr's and changing in high HP engines running hard.
Yamaha 4.2 motors require Yamaha HD lube. If this is not available is a synthetic lube rated GL5 acceptable?
Was thinking of Mobil 1 or something similar.

Last edited by tarpononecharter; 06-01-2019 at 06:32 AM. Reason: Added Mobil 1
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Old 06-01-2019, 04:33 AM
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Originally Posted by Flot View Post
I am a big fan of DIY service. If you do it yourself, be sure to keep all the receipts, take photos, document your work.

All things considered, though, the 20 hour service might be the right one to let the dealer do. That way if you have any "new motor issues" in the first 100 hours, there is going to be no question about who performed the initial inspection/service, was it done correctly, etc, etc. You'll also establish a relationship with the dealer you'll have to take it to if you have any warranty issues that crop up.
Exactly my thoughts. My dealer covered my 20 hr service on my 2018 DF175.
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