feetupfun

Useful mods for the TY175 are: Use Sammy Miller footpegs. They are a tiny bit lower and further back but the best thing is that they are much larger, providing a much more comfortable ride and better leverage for turns. I will repeat what the previous respondent suggested. Falcon Classic shocks transform wonderfully the way both the TY175 and TY250 handle. Mine have 40 lb springs which are a tad soft for the 83kg rider. Don't make the swingarm longer unless you want to go desert racing. Again retain the standard fork tube location unless desert racing. About 20mm of tube extending through the top clamp is ideal for trials and trail riding. The front end from the TY250 twinshock (larger diameter fork tubes and clamps) fits straight in the TY175 headstock if the rider is exceptionally heavy or picky about fork flex. I find the standard forks to be a bit soft for very heavy landings even with 15wt oil. Increasing the fork spring preload upsets the steering a bit in floaty turns and doesn't have much effect on bottoming anyway. I don't know of alternate springs that are any good. I have tried single rate springs from a TM125 Suzuki set up to provide the same static sag but with a higher spring rate but the standard TY springs were so much better in turns I went back to standard springs. There are aftermarket springs available for the TY250 from B&J Racing in the USA. These work very well in the TY250 forks compared with the standard Yamaha TY250 springs. If you are serious about improving the steering, buy a Mini Majesty frame for the TY175 running gear from Craig Mawlam in the UK. They were made in 1982 and have superior chassis geometry. If you steepen the steering on a Yamaha frame, you may have to redo the exhaust to keep clearance for the front mudguard. The motor can be increased in capacity for more grunt to 205cc with a larger cylinder sleeve. Breathing may be compromised by this ie it may not rev as high as the standard Ty175. Increasing the compression ratio slightly from standard improves pulling power also but requires careful fuel selection and meticulous spark timing maintenance. David Lahey (TY175B fan) Australia

Gaff Yes it is the oil pump cable at the front end of the RH case. The clutch cable is about 1/2 way along the RH case. It is piston port ie no reeds no rotary valve. They run great and are as reliable as an axe. Yes there is a website and forum and there is even someone (in New Zealand) making first rate new otherwise unobtainable parts for these bikes. There are two models KT250A1 and KT250A2. A1 1975. A2 1976. They are the same mechanically but have different paint schemes on the tank and sidecovers. Have a look at the engine and frame numbers if it is important which model it is. The site is: http://members.tripod.com/kawasakiKT/index-4.html David Lahey Australia