20 Most Recent 2005 Yamaha TT-R 250 Questions & Answers

Either the crankcase is too full or there is excessive piston ring blow-by.

sounds like the gars are shot
when you put it in to first gear can you feel it jolt
if not then you need a new gear cog

try puting the bike in to second and driving in that

try adjust arm

the only thing you can do with the sparkplug is you will have to remove the cylinder head ,take it to an automotive enginnering shop,have them machine out the old thread and insert a helicoil,hope this helps

The ignition timing is CDI ignition, pre-set at the factory. You can't change it. The valve timing is the only timing you can do and that is done by lining up the static cam timing mark and the timing mark on the flywheel.

If you simply installed the cam chain on the gear without paying attention to the position of the crank and the position of the cam then the valves are likely not opening and closing at the correct time. Too far off and the piston can hit the valves and bend them and possibly crack the valve guides.
Check a service manual. Cam chain timing procedures will be shown in the manual.

Please rate this answer. Thanks Tasha!

Alternator and voltage regulator

Check for spark and fuel. The spark should be blueish-white and consistently flashing. If the ark is dull-orange and/or inconsistent then there is a problem. the fuel should flow freely from the pet-****, through the needle and seat, and past the primary and secondary jets. There are other things that can cause this problem, check the intake manifold gasket, spark plug, wire, water in the gas, and so on. well good luck.

If you are using it for its' designed purpose, then this is going to happen. Off road riding has its' drawbacks, and you have found one of them. This is why most off road riders use tubed tyres and bolted tyres (to the wheel). You may need to adjust the tyre pressure to stop the tube creeping in the tyre. It will be trial and error to get the pressure right for your style of riding.

Hi, a yamaha TT350 actually has a 4 stroke engine. To replace the kick starter shaft, You need to remove the crankcase cover on the kick starter side of the engine.. The clutch basket etc will then have to be removed. ' You then use a set of needle nose pliers to unhook the kickstarter return spring from its post in the crankcase. Release the return spring and allow it to relax. Then rotate the kickstarter assembly counterclockwise by hand , and remove the shaft assembly from the crankcase. Reverse this process to refit. You can buy cheap workshop manuals for the yamaha XT/TT 350 models. Clymer manuals make them, there are usually good second hand ones on ebay etc, the XT/TT350 workshop manual number is M480-3. These workshop manuals are a "must have" when working on bikes or cars etc, and by following a manual, at least you'll know that the job has been done safely and 100% correctly.