'79 GS750L Maintenance

[Starboard M]

First off, I apologize for the typical newbie questions, but I cant seem to find an answer on such basic questions on google of GSR.

1. What spark plugs does my 750 use? Iv read NGK B8-ES or NGK-D8EA. The D8 was for a '80 750, but is that because its a 16v compared to my 8v?

2. I feel like an idiot for asking this, but does a 750 have a secondary, and rear dif? Ive read Bass Cliffs writeups, but he has a 850, so things might change.




I would go look at the bike, but its 45 minutes away at my friends house.
Im also a complete motorcycle newb




Doing oil, filter, plugs, chain lube, and pending secondary and rear dif oils before I ride the bike.

Search terms: "750 spark plugs" "gs750 spark plugs" "750 Secondary" "750 rear dif"




Thanks again guys, and sorry for questions that are almost to stupid to ask!

 

[Nessism]

The service manual for your bike will have the complete maintenance schedule. Basscliff has a free download.

B8ES are the plugs. D8ES are smaller and used on 16V 750 engines.

Your bike only has one oil fill - for the engine.

There are many other things you should maintain. Please don't skip any steps or items.

Good luck

 

[Starboard M]

The service manual for your bike will have the complete maintenance schedule. Basscliff has a free download.

B8ES are the plugs. D8ES are smaller and used on 16V 750 engines.

Your bike only has one oil fill - for the engine.

There are many other things you should maintain. Please don't skip any steps or items.

Good luck

Thanks for the quick reply. I will download the manual once I get home and take a look at it.




Can you elaborate on what else I should do? Im a Jeep guy, but it seems very little transfers over other than the ability to work on things.

I forgot to add brake flush to the list. Pads and rotors both look like they have some life left, gas is new (I added a half bottle of carb cleaner), tires are older than 3 years (3 years seems to be the life expectancy on bike tires?) but they have no dry rot and a lot of tread left.

I do have four pod airfilters which leak a lot which I need to fix. PO threw out the stock box, so from reading my best bet is either finding a used stock box, or mess with the carbs.

 

[BassCliff]

Hi Mr. Starboard M,

Yes, you have only crankcase oil to change. But you still must maintain the sprockets and chain, fork seals, valve adjustments (see the 16 valve adjustment procedure), clean the carbs, and basically everything else except the driveshaft stuff.

Anyway, let me dump a TON if information on you and share some GS lovin'.

I just stopped by to welcome you to the forum in my own, special way.

If there's anything you'd like to know about the Suzuki GS model bikes, and most others actually, you've come to the right place. There's a lot of knowledge and experience here in the community. Come on in and let me say "HOoooowwwDY!"....

Here is your very own magical, mystical, mythical, mind-expanding "mega-welcome". Please take notice of the "Top 10 Common Issues", "Top 15 Tips For GS Happiness", the Carb Rebuild Series, and the Stator Papers. All of these tasks must be addressed in order to have a safe, reliable machine. Now let me roll out the welcome mat for you...

Please click here for your mega-welcome, chock full of tips, suggestions, links to vendors, and other information. Then feel free to visit my little BikeCliff website where I've been collecting the wisdom of this generous community. Don't forget, we like pictures! Not you, your bike!

Thanks for joining us. Keep us informed.

Thank you for your indulgence,

BassCliff

 

[Nessism]

Thanks for the quick reply. I will download the manual once I get home and take a look at it.




Can you elaborate on what else I should do? Im a Jeep guy, but it seems very little transfers over other than the ability to work on things.

I forgot to add brake flush to the list. Pads and rotors both look like they have some life left, gas is new (I added a half bottle of carb cleaner), tires are older than 3 years (3 years seems to be the life expectancy on bike tires?) but they have no dry rot and a lot of tread left.

I do have four pod airfilters which leak a lot which I need to fix. PO threw out the stock box, so from reading my best bet is either finding a used stock box, or mess with the carbs.

How much maintenance you perform depends on your level of mechanical sensitivity, your willingness to find a ride home if your bike breaks down somewhere, and how lucky you feel. My opinion is to perform all the factory specified maintenance plus things like replacing all the carburetor O-rings, inspecting the electrical plugs/grounds for proper connection, and tearing down the full brake system and cleaning out all the grunge. Perform all the work up front and you can ride without worry about a break down somewhere.


Oh, and those pods mean you need to rejet the carbs otherwise the mixture will be too lean. Not good.