I'm having a cylinder rebored to 66.5mm and Wiseco has the below two piston options, but they've told me neither is a direct fit for this year/model and that they don't offer other options. Disappointing because they do offer all sorts of options for 1978 and up.

I bit the bullet and bought a OEM/NOS one off ebay, but that's way to expensive to do more than once so Enduronut if you see this do you have any advice on other piston producers? Your name came up in multiple related posts. Thanks!

Any new parts, for the 1976 Yamaha DT175C, will be added here.

www.legends-yamaha-enduros.com

248-23115-00 / 248-23115-01-00. This part is no longer available from Yamaha. It has been discontinued. This is sold individually, as one piece. This part originally came on the following models:1969 Yamaha AT1E1969 Yamaha AT1M1969 Yamaha CT11970 Yamaha AT1B1970 Yamaha AT1BM1970 Yamaha CT1B1971 Yamaha AT1C1971 Yamaha CT1C1972 Yamaha AT21972 Yamaha CT21973 Yamaha AT31973 Yamaha CT31974 Yamaha DT100A1974 Yamaha DT125A1974 Yamaha DT175A1975 Yamaha DT100B1975 Yamaha DT125B1975 Yamaha DT175B1976 Yamaha DT100C1976 Yamaha DT125C1976 Yamaha DT175C This part is a new reproduction of the original. The originals have deteriorated with time, as they are 50+ years old. The part number is used for reference purposes only and no source of manufacture or supply is implied. The price includes sales tax. If you want additional insurance coverage, contact me before ordering. If you do not purchase insurance, I am not responsible for mis-delivered packages, lost packages, or shipping damage.

www.legends-yamaha-enduros.com

This part is no longer available from Yamaha. It has been discontinued. This part is a new reproduction of the original. The originals have deteriorated with time, as they are very old. The part number is used for reference purposes only, and no source of manufacture or supply is implied. The price includes sales tax. If you want additional insurance coverage, contact me before ordering. If you do not purchase insurance, I am not responsible for mis-delivered packages, lost packages, or shipping damage.

I’m not familiar with the spark advance mechanism used on the 175C and I’m question if mine is sticking or is this normal. It does not return via the small extension spring when I actuate it by hand. It stays in whatever position I leave it.

My concern is that I had a crank seal fail which left my flywheel operating in an oil bath. I’m amazed that it didn’t foul the points, but it didn’t. The bike actually ran with the flywheel sloshing oil.

So I have replaced the seal and want to check timing. Hence the reason I asking about the advance mechanism. I am concerned that the oil bath may have made it “sticky”. Or is it proper to act that way “in-hand” but when installed centrifugal force makes it behave properly.

https://youtu.be/IltmmM0u0uw?feature=shared

Welcome to the 1976 Yamaha DT175C Forum. Feel free to post anything related to this model in the category. The factory color was called French Blue. The USA Vin range was 559-000101 to 009548. Anything new, will be added to this section.

                     1976 Yamaha DT175C

The 1976 Yamaha DT175C Owner's Warranty Guide Book is Located: CLICK HERE

The 1976 Yamaha DT175C Owner's Manual Bag is Located: CLICK HERE

I went to mid Ohio to scrounge for parts and this came home with me....