I have been searching for hours now trying to find the recommended jets, 38 pilot and 130 main for the 230 TTR I just picked up. Yes I know that they are 130 and 38, what I needed was the correct part numbers and a source. I'll share what I found. MJ 620-14231-26-A0
PJ 43f-14342-19
These are Yamaha part numbers, that you should be able to get from a dealer, or online. Believe me it's not that easy. TT doesn't even show that part # for the PJ. I was able to order them from Bike Bandit. around $24 with the shipping included. I just hope they work as advertised.
The OEM parts doesn't even show these parts as available when you pull up the parts diagram of the carb. You'll need to find a supplier that will accept the part number, might be easier to just call???
TTR 230 Jets
Started by
Fruitfarmer231
, May 07 2012 06:27 PM
1 reply to this topic
Posted 07 May 2012 - 09:08 PM
You're right. You won't find these parts listed for the TT-R230. These parts were used on other models and will work. If you go to the parts guy at the dealer and ask for a #38 pilot foe your 230, he'll tell you one isn't available. If you tell him the part number you want, he'll order it for you. Occasionally, you'll find a sharp guy at the parts counter who will know what you need or search some of the popular forums and let you know. Or, you can just search on the part number online and find lots of companies who will sell it. But, no matter what, it won't be listed as an optional jet on any official OEM parts list for the TT-R230.
You'll notice that the jet size is often a part of the part number. For example, the -19 pilot is a #38. For a #36, change the -19 to -18. Take the dash number and multiply by 2 and you get the jet size. For the main, take the 26 and multiply by 5 to get the 130 size. If you replace the -26 with -25, you'll see that it's the part number for a #125 main. These multiples aren't always the same, i.e., 2 for a pilot jet and 5 for a main. Sometimes the main is a multiple of 2 as well.
I trusted that someone did the research and came up with the right part number for my TT-R230. But, for my Honda lawnmower, when I wanted a richer main, I changed the dash number up one number and searched to find the next richest. It wasn't listed as optional but it worked. This may not always be the case.
You'll notice that the jet size is often a part of the part number. For example, the -19 pilot is a #38. For a #36, change the -19 to -18. Take the dash number and multiply by 2 and you get the jet size. For the main, take the 26 and multiply by 5 to get the 130 size. If you replace the -26 with -25, you'll see that it's the part number for a #125 main. These multiples aren't always the same, i.e., 2 for a pilot jet and 5 for a main. Sometimes the main is a multiple of 2 as well.
I trusted that someone did the research and came up with the right part number for my TT-R230. But, for my Honda lawnmower, when I wanted a richer main, I changed the dash number up one number and searched to find the next richest. It wasn't listed as optional but it worked. This may not always be the case.
