Indeed. You said earlier it had new chain and sprockets. If it's bottom/left side of engine, someone has cocked up putting it together.Did they actually put the engine sprocket on properly? Have they put the cover on properly?Might be a simple fix
Find the joining link, move it to the centre of the free travel below the swingarm, the link should move freely either end and return back straight. If it remains kinked even slightly it's too tight and must be replaced. To check the rear sprocket alignment, measure from the centre of the rear axle to the end of the swingarm, where the aluminium joins the cast rear adjuster. It should be within 1mm, better spot on.
Gnasher, why does a chain that's too tight make the first to second gear change clunky?.I thought all Fazer 600's were like that until someone said it's caused by insufficient chain slack. Just never understood why it has that effect
I recently changed my chain and sprockets, the sprockets and alignment were fine but the chain did hsve some tight spots and one in particular was tighter than the rest and it was that one that was causing the knocking sound which I could even feel through the left peg. Once I have changed everything it was silky smooth again.
Could a dealer get it so wrong and then also not realise the issue on hearing it. If they have over tightened the link then its also likely that the sprockets are out of alignment too.
They had fitted another new chain while doing the accident repairs as the chain was bent in the accident .
Update .The insurers valued the bike at £3600.The actual cost of replacing my bike from a Yamaha dealers with the same bike in the same condition and similar mileage would be around £4250 to £4900.The knock is from second gear which has lost a tooth and spilt from where the tooth is missing to the centre.This was discovered by removing the clutch and using a camera.This was probably caused by the car stopping the back wheel turning as I was in second gear when the car hit me from behind.The cost to rebuild the gear box is estimated at £2000 .This added to the cost of repairs so far is £4200.The insurance company original offered a maximum of £2900 for repairs .However after much negotiation they have increases the repair offer to £3500 .I will have to pay the difference but will have a usable bike at the end of this .So all being well I should have my bike back in about 4 weeks time .Also it will have 2 new Michelin Road 5 tyres. _________________