Yamaha TT-R230 Electric start FOUR STROKE (2 bikes) For: MSF Dirtbike School Yamaha TT-R230 Electric start FOUR STROKE (2 bikes) For: MSF Dirtbike School Off-Road.com Newsletter Join our Weekly Newsletter to get the latest off-road news reviews events... Off-Road.com Newsletter Join our Weekly Newsletter to get the latest off-road news, reviews, events... Email Print Discuss Please enable JavaScript to view the comments. Email Print Discuss Please enable JavaScript to view the comments. -rs Email Print Discuss Please enable JavaScript to view the comments. -rs Email Print Discuss Please enable JavaScript to view the comments. The first real test of the front end was a section of small to mid-sized bumps on a fast straight... The first real test of the front end was a section of small to mid-sized bumps on a fast straight... Hose is tucked in nicely and still clears the chain. Hose is tucked in nicely and still clears the chain. The larger forks and triple clamps did not interfere with the steering in any way. That’s... The larger forks and triple clamps did not interfere with the steering in any way. That’s... The stock main jet can now be removed. The stock main jet can now be removed. It's easier to tape the cable out of way when it's free. It's easier to tape the cable out of way when it's free. Take the front hose clamp off the carb. Take the front hose clamp off the carb. Removing the carb can be a real hassle but is a lot easier when the rubber boot to the filter is... Removing the carb can be a real hassle, but is a lot easier when the rubber boot to the filter is... You can now remove the vent hoses. You can now remove the vent hoses. Front vent hose removed. Front vent hose removed. Now you can take the carb out. Now you can take the carb out. To get to the air filter the side cover must be removed. To get to the air filter, the side cover must be removed. Air filter exposed. Air filter exposed. The air filter can easily be slid out. The air filter can easily be slid out. While you're in the area take the snorkel off the top of the air box and feed it to the dog. While you're in the area, take the snorkel off the top of the air box and feed it to the dog. With the carb removed the float bowl is taken off and the stock main jet and pilot jet get replaced... With the carb removed, the float bowl is taken off and the stock main jet and pilot jet get replaced... Float bowl off. Float bowl off. This is a TK carb but takes certain Mikuni jets. This is a TK carb, but takes certain Mikuni jets. Now comes the tricky part: There’s a brass plug on the bottom of the carb (near the inlet)... Now comes the tricky part: There’s a brass plug on the bottom of the carb (near the inlet)... We used a fresh one-quarter inch drill bit and drilled very gently with light pressure. We used a fresh one-quarter inch drill bit and drilled very gently with light pressure. Blow the hole free of chips. This controls the fuel flow. Blow the hole free of chips. This controls the fuel flow. Using a straight slot screwdriver bottom the adjuster out then back off one full turn. Using a straight slot screwdriver, bottom the adjuster out, then back off one full turn. Keith Lynas the OSSA guru helped us with the carb. Keith Lynas, the OSSA guru, helped us with the carb. Keith popped out the stock main jet and slipped in the new 130 main. Keith popped out the stock main jet, and slipped in the new 130 main. The stock #36 pilot was removed and Keith installed a #38. The stock #36 pilot was removed and Keith installed a #38. For the pilot jet the stocker is a #36. You should replace this with a #38 pilot. The Yamaha part... For the pilot jet, the stocker is a #36. You should replace this with a #38 pilot. The Yamaha part... Completed drill job. Completed drill job.
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