Adjust RPM on Suzuki T 250 and 'oil question'

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rtollef
On the street
Posts: 17
Joined: Sat Jun 28, 2014 11:34 am
Country: Norway
Suzuki 2-Strokes: T250

Adjust RPM on Suzuki T 250 and 'oil question'

Post by rtollef »

Hello.

I have a thought that the 'idle' RPM is a little bit high on my T250, and wonder if I should try to adjust it down to lower RPM.

Now its a bit above 2000 RPM when running idle, and I wonder how low it is recommended to have it...

I checked on the 'oil meter' on the right side, and the level seems to be rather low. Can I refill with regular twostroke MC oil, or is it recommended to change oil and fill it up to right level.

And here comes the really dumb question: There is also an oil filling option on the motorblock, on the right side. Little black plug to screw off. What purpose has that? What kind of oil is used there?

Any tip is appreciated.

Thanks
Rune
Before I always wondered why people were so crazy about motorcycles.
Now, I don't wonder anymore...


Kawasaki ZZR 600 1998
Suzuki T250 1972
Kinroad Q50 2008
Vespa 50 Special 1978
Craig380
Expert racer
Posts: 1250
Joined: Mon Dec 01, 2008 2:52 am
Location: Manchester, UK

Re: Adjust RPM on Suzuki T 250 and 'oil question'

Post by Craig380 »

Hi Rune,

Does the oil tank still have the oil in it from when you bought the bike? If the bike is running OK, just buy a bottle of motorcycle 2-stroke oil that is suitable for oil injection systems. The oil specification you need is API TC, Jaso FC or FD, and ISO-L-EGD. There are many brands of good oil - Castrol, Putoline, Silkolene, Rock Oil, Motul, even Yamalube :) All of these are plenty good enough for 1970s machines. See the Oil Forum in the index for more information than you will ever need ....

The oil filler on the engine is for the gearbox. You should use a basic 4-stroke motorcycle oil in that, NOT 2-stroke oil. If you have not changed it yet, I would change it soon. There is a drain bolt under the engine, let the oil drain out, replace the bolt and then add the correct quantity of oil - 1.2 litres.

There is a scan of the factory Suzuki manual here, which also tells you how to adjust the carbs: http://www.oldjapanesebikes.com/mraxl_G ... index.html
1976 GT380 - wounded by me, and sold on
2006 SV650S - killed by a patch of diesel and a kerb in Feb 2019
2017 SV650 AL7 - naked and unashamed
rtollef
On the street
Posts: 17
Joined: Sat Jun 28, 2014 11:34 am
Country: Norway
Suzuki 2-Strokes: T250

Re: Adjust RPM on Suzuki T 250 and 'oil question'

Post by rtollef »

Thanks for good info.

I will look at it.

Right now I have another problem... the T250 just went dead today... no way it will start... seems like there are no electric signal anywhere.... no spark... its just dead.

I am wondering if the generator might be broken...

Rune
Before I always wondered why people were so crazy about motorcycles.
Now, I don't wonder anymore...


Kawasaki ZZR 600 1998
Suzuki T250 1972
Kinroad Q50 2008
Vespa 50 Special 1978
Craig380
Expert racer
Posts: 1250
Joined: Mon Dec 01, 2008 2:52 am
Location: Manchester, UK

Re: Adjust RPM on Suzuki T 250 and 'oil question'

Post by Craig380 »

Do you have a voltmeter or multimeter? Check the battery voltage - it may be low on charge, or dead. You need a good battery to run these bikes. Even if the generator is dead, you can ride for 2 hours on a fully charged battery.
1976 GT380 - wounded by me, and sold on
2006 SV650S - killed by a patch of diesel and a kerb in Feb 2019
2017 SV650 AL7 - naked and unashamed
rtollef
On the street
Posts: 17
Joined: Sat Jun 28, 2014 11:34 am
Country: Norway
Suzuki 2-Strokes: T250

Re: Adjust RPM on Suzuki T 250 and 'oil question'

Post by rtollef »

Hello

The voltage is about 13 Volts on the battery.

I will check the voltage from the alternator later today.

Rune
Before I always wondered why people were so crazy about motorcycles.
Now, I don't wonder anymore...


Kawasaki ZZR 600 1998
Suzuki T250 1972
Kinroad Q50 2008
Vespa 50 Special 1978
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