Today I began working on my winter project, my 74 DT175A and noticed the previous owner almost completely stripped the tops of every bolt for the covers over the Autoluber, Magneto/Fly Wheel and the Sprocket cover. I was able to get the bolts out of the Autoluber cover and the Magneto/Fly wheel cover but the sprocket cover bolts are the worst and appear to be slightly seized. Does anyone know where I can get replacement bolts so I do not run into this problem again in the future?

Thanks.

Yamaha might still do them, but check first that they haven't changed the finish/colour over the years (they have a habit of doing this!).

The size of most Yamaha screws and bolts is usually shown within the part number. For example, the part number for the screws for the oil pump cover on your model was originally 98511-06025 and this means that it was a M6 screw, 25mm long (excluding the head). I noticed on the CMSNL website that the part number has changed (superseded) to 98517-06025 and, given that it is the last two characters of the first block of five that identify the finish, I suspect that this might have changed from chrome or BZP to dark olive/black. I haven't managed (yet!) to track down a directory of what finish matches what number.

If you aren't worried about originality, then you could get new screws/allen bolts from ebay/online or your local diy store. If you are looking at keeping some sort of originality, bear in mind that the heads of the original screws were likely to be Japanese Industrial Standard (JIS). Folks using the wrong screwdriver (eg Phillips) is, I understand, a contributing factor in the heads getting chewed!

Finally, you could always stick a wanted ad on this forum - some members might have some spares sitting around doing nothing.

There might well be a parts manual for your bike in this forum's Tech Library (see top toolbar), or you can use online sites such as CMSNL and Partzilla. The online sites will often show part number updates (supersessions).

I hope that my rambling helps!

Rendering Error in layout Message/Item: fopen(http://open.api.ebay.com/shopping?callname=GetSingleItem&appid=makotosu-08bc-47da-8e7d-68e3ee6e51ca&siteid=0&responseencoding=JSON&ItemID=372086586765&version=889&trackingid=&trackingpartnercode=9): failed to open stream: Connection refused. Please enable debug mode for more information.

Please Log in or Create an account to join the conversation.