Chain drops in Dahon Mu SL (2010)
Hi all, wondering if anyone can help with some suggestion on what i can do to fix this issue i have, before i bring the bike to the mechanic instead.
I have a DAhon Mu SL 2010, works fine, and runs well, got it new less than half a year ago. Probably done around 400 km on it as of now.
Then last week, i was doing the normal clean cogs/lube chains, when, while trying out the shifting and pedaling by hand, the chain jumped out and got stuck in the gap between the chain guide and the chain guard. this happens when i shift to the smallest cog (i.e. from gear 8 to 9). I had to loosen the chain guide to be able to put the chain back on, and now i can almost replicate the issue 2 out of 3 times. On a friend's suggestion, i tried tightening the H screw on the RD to see if that resolves the issue, but the chain drops is still happening. I only done 2 turns - maybe it is insufficient?
That said, i have ridden on the bike since then, with the chain guide away from the chain, and did not get any chain drops.
Anyway, I am hoping for some suggestion on what to do, before i lug it to a LBS to get it fixed. Thanks in advance!