I have an 05 and near the engine serial # I found this written in paint marker. Used motor??? If it was replaced, the mechanic did an awesome job doing it. All bolts/fasteners look unmolested. I am assuming the motor serial number has to be checked thru Honda for year of manufacture? Sub-frame has right paint code sticker, and info sticker under seat on rear fender is dated 05. There is no evidence of it being wrecked (that I can tell). It had factory ccts on it..not anymore. Not that concerned about, more of a piece of mind thing.

 

mine has a similar number.
it is the original.

 

I do know the 05 model frame numbers start at 700001. Engines have a start/stop number for each model year, i do believe.

 

Mine has similar blue markings in handwriting. I've also wondered that but I doubt it's from an engine swap.

 

I didnt think so either, buddy of mine was trying to convince me motor came from a salvage dealer. I told him there is no way you can swap a motor and leave absolutely no evidence of a wrench being on it. I dont think the PO ever done any maintenance on it other than oil and tires.

 

Me three, I have the blue scribble on my engine.

 

I have white markings in same place on my 2000 and was also wondering if they were markings from a salvage yard, but if everyone has them in the same spot I have to assume its a good sign that it was something done at the factory?

 

Mine is in yellow. Engine builder/tester id at factory..I suppose,

 

I replaced my motor and dont think it has markings. Never looked but you would have a hard time telling it was swapped.

 

My 2000 is marked in the same way.
I know mine isnt swapped

 

I have white markings on mine. I thought for sure my engine was replaced.

 

Since mine is yellow, maybe I should paint the rest of the bike same color..save me money on go fast mods. lol

 

My 99 had them and I bought my 03 brand new and it had them. They are factory markings

 

this is normal its also on the bottom casing bust be to match up the bottom and top halves check under swing arm next too rear exhaust