124 Suzuki burgman,2010 year only had 2500 miles on clock done 1200 since jan 4th 2017. it has been stored in garage for a few years.when i first rode it, did 70 mph easily,had 2services,no better

The Check Engine Light is on? Did you read the DTCs.

The second link has the answer, the first link says it is a known issue. It is times like this you need the Dealership or a good auto electrician.

Transmission won't shift to third until temp rise

ClubLexus https://www.clublexus.com > forums > 713188-transm...
Apr 1, 2017 - Transmission won't shift to third until temp rise ... The solution is to drive slow and keep rpms at 2.5k and 3k at max till the engine and transmission warm up.
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RX300 not shifting into overdrive. - Lexus Forum Discussion
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More results from www.clublexus.com

Owner of Lexus RX300 with 182000 miles. Recently the ...

JustAnswer https://www.justanswer.com > lexus > 3wsxt-lexus-rx3...
Aug 22, 2010 - Recently the transmission won't go into overdrive. Stays in 3rd gear like when you press the o/d button to do so. When car is cold (live in ...
1 answer · Top answer: Hello and thank you for using just answer! The check engine light is on correct?

https://www.google.com/search?q=Lexus+RX300+will+shift+into+overdrive+once%2C+and+after+slowing+down+it+won%27t+go+past+3rd+gear

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I got this free Pdf manual from an online store for free and I don't think Ive visited a mechanic or fixya for help for more than 3-4 times out of the all the times I fixed the chipper in these 4 years

nice to know year, and country, ? this is USA forum
1999 to 2017 , why make this so hard?
1.9 DDS or not DDS?
5ways to know that.
1:look on the suzuki site, and pretend to buy that part,'
2: buy the book there, the service manual.
3: buy part in any online store, look for said part.
4: google that engine,but....
5: tap tap tap front cover, metal? chains or gears, plastic= belt

but no year stated making the below impossible
"Pre 2001 turbo diesel models were fitted with Mazda Diesel engine, with later models fitted with a turbo diesel engine (4 cyl. 1.9L 129 hp (96 kW) manufactured by Renault)"
TRAFIC?
or MEGANE?2010 up
the renault is SOHC engine,;head , early had belt.
the 2010 up is sold by GATES,
best i can do, with only displacement of engine.

03-06 Suzuki Burgman 400 - Fuse Box Location - YouTube

? 0:45
https://www.youtube.com/watch?v=QDPZdMsAGx4
Sep 30, 2010 - Uploaded by MicBergsma
03-06 Suzuki Burgman 400 - Fuse Box Location .... 07 + Suzuki Burgman 400 Front Leg Shield Cover ...

Hello ! I can't find the fusebox on may SUZUKI burgman 250 year 1999. Do you have any advise ,or idea? Thank you very much...

You could buy a second hand speedo from a bike breakers, I would never suggest you try tampering with the odometer, the way dodgy used dealers may remove some miles.

A trained Suzuki technician should know how to dismantle the transmission. If he has to pull things a part to see what is wrong you might need to pay for this to get a proper quote. If the Technician is good he will leave it apart in case you want to go ahead, the original quote should then be absorbed into the bill if you do go ahead. If the Suzuki Tech is not trained then go somewhere else to find one that is. Suzuki Burgman is a tough little scooter, I know of one that has done a ride around the world and had only a battery and tyre problem, it had 20,000Km's on it before he left on the trip.

yes it does