Ohh... so you're back again after a long ERA. Nice to know that you got out of hibernation. What was the problem with carburetor diaphragm? And how much did it cost to you alongwith the cost of replacing chain and sprocket plus clutch plates?

i can figure out u r two problems mate. first one that thud noise comes from main stand when touches some potholes, humps, even in tight corners when slide bike too much. dont u understand that common problem in our 180 yet? i felt it in next day of purchase itself. in corners used to slide my bike too much then comes this thud with a sound screeeeew....... sound. thus people gaze at me it easily appeares when there is a pillion. when there is two pillions then it will b tooooo much. . . but it can b used as a firing show on roads.
our 180 ug4 comes with huge wider tyres. but we cant use its advantage during in corners really i like to touch road by footrest racing screw during tight corners.. i was in full confidence to do that because earlier done it on discovers tiny tires somany times.. but cant done it in our widest zapperrr

then about 2nd problem it comes from u r pillion seat. it will b a bit loose. that makes this very very irritating kid..kid..kid... noice. it will b only in potholes.
just remove u r pillion seat then u can see 2 rubber bushes that touches bikes frame when fit it. just add some sponge or such thing in between rubber bush and frame to tight it. then refit pillion seat. then have a short drive.
i too suffer this problem since the s.c guy ones refitted pillion seat after a service.
have a look.

thanks mate for information. but i think it will change here in kerala.
i will purchase which will they brought for me. it may b mineral, s.s or f.s.
i think its the time to know bikes luck

Thanks dude. Ya the chain was not cleaned and slackness was not adjusted for the past 700 kms. Bike clocked 12.5K + kms. Will tak care of tat this weekend

@JASMINE RIDER ,
Bro i dont do knee scraping cornering and mine is just normal kind of driving. Btw i own P150 not 180. I tried tightening every single bolt n nut below the seat.
Anyways thanks for the reply guys.

The thud sound on my bike was due to cracked seat cowl.

This valve train and the one in our bikes differs.
There is no pushrod in a pulsar

Yep!! correct, that diagram was just for reference, nothing referring to Pulsar or anyother, just an example.

So there is just the rocker arm, right.

got motul 2000 20w50 oil. is it ok?

written like this, 2000 multipower. for petrol cars. sae 20w50.
conforms to API SG/CD.
IS IT OK FOR MY 180 UG4?

API-SG is an old rating only the oil you bought and Petronas have this rating oil still selling in India, Bajaj recommends SL\SM grade oil. Although, no problems now you have bought that you could use it in your bike. But, I suspect it might cause clutch slippage. Anyhow, use it and see.

No, it is NOT. That's for a car which runs a dry clutch.
The only Motul oils we can use are the following:
3000 - Mineral
5100- Semi Synth
300V- Synth

then cant use? oh...my god...then 200 rs gone?

mates clear it how u determined that this oil is for dry clutch? so i cant use it? after many stress of searching this oil got one bottle after booking, now cant use it?