So i was looking at pictures of a trimoto and theres a plasic oil tank on the side of them, but mine doesnt have one... but you do put oil in the crank case. So is this plastic tank needed or do i have a different model?
Thanks, Jake.

 

The plastic tank is for the 2 stroke oil. If you don't have the tank, which many tanks had mounts bust or the oil injectors fail, then you should be mixing your 2 stroke oil in with the gas. Sort of like a chain saw or weed whacker. Make sure you use a quality 2 stroke oil and follow the manufacturets suggestions for the mixing ratio. Some different companies recomend different ratios for their different porducts. No big deal, as long as your premixing your 2 stroke oil with your gas. My yt125 is pretty much like your 175 and I premix my oil. Also I have a 175 set of front forks and brake on my yt125. Alot of the parts are interchangable.

 

ya i just mix the oil, but now theres another problem, this things a pain in the behind to start, pretty much the only way to start it is to push start it. I can get it running by doing this but as soon as i let off the throttle it dies, and wont start for about an hour. Its got great spark, tried 2 different plugs, cleaned the carb twice and it seems to be working, the guy who has it before me has plugs in the ports on all ports on the carb except the fuel and the one on the bowl. Is this necessary? Also it doesnt have a fuel pump, this may be the problem... it gets good fuel, accually too much, it leaks out the exhause hole when i shut it off. This is my first atc, and i would like to get it running decently. So any help would be much appreciated. Thanks Jake.

 

There is no fuel pump on the yt125\175. If you have that much fuel coming out you have a bad float or bad float cut off. To get rebuild parts for the carb you will have to go to the yamaha dealer as there are no aftermarket carb rebuild kits for their earlier trikes that I know of. And yes, you need to have the injection points blocked off or your carb will suck air and run poorly. Also, the stock air box needs to be in place with a decent stock air filter. You can run a K&N filter or any other aftermarket air filter but you will have to re jet your carb which can be a pain. Also, once you rebuild your carb, you will have to tune it in to running condition. To rebuild the carb, you will need all the replaceable parts on the carb from the dealer, gaskets, jets, needle, more than like the float and the float cut off valve and the adjustment needles for the air\fuel and the idle if you can get them. You also need to get a 1 gallon can or carb cleaner that you can dip your disassembled carb into for 8 hours or so. That should pretty much clean all your air passages out pretty will. I personally do not blow air into the air or fuel passages, I just usually spray one of those cans of carb cleaner in to make sure the passages are clear using the small straw supplied with the can. Be careful putting the carb back together, as the carb is made of potmetal and the threads can be stripped out pretty easy. Also be careful of the brass needles, they are easy to mess up also. Make sure you put the needle back in with the e-clip in the middle notch. You might want to try and pick yourself up a yamaha shop manual for the trike too. It will have alot of great info in it. The manuals sometimes aren't cheap, but well worth the money. Make sure you have a decent set of metric wrenches to work on the trike with too and metric allan wrenches. Have fun and take your time putting the trike back together the right way. You might be undoing 25 years of people messing up the trike before you bought it.