the main jets for these carbs are almost unheard of at my local dealers. what other mikunis use this style main jet?
are those the hex ones?
if so, depending on what size your after, any western power sports or parts unlimited dealer can get those, in the popular sizes as well as your oem yamaha parts dealer in the odd increments, they are mikuni 4/042 type jets.
lots of different vehicles used those style carbs, i even have a few unneeded ones left over from those days, can check sizes if your interested.
if so, depending on what size your after, any western power sports or parts unlimited dealer can get those, in the popular sizes as well as your oem yamaha parts dealer in the odd increments, they are mikuni 4/042 type jets.
lots of different vehicles used those style carbs, i even have a few unneeded ones left over from those days, can check sizes if your interested.
they are round headsnowdad4 said:
staggs65
Moderator
round head with a straight slot? sounds like the jets for all the yamaha tripple sleds. should be common to any yamaha dealer.
lets say the sled is running rich at 20F how many mains should i drop for 70F 4 sizes?
I get all mine at shspowersports.com. way cheaper than buying drone the dealer.
yamahas typically drop one jet size for every 20*F. remember though that yamaha mains are incremented differently by size vs aftermarket ones and you pay for those odd sizes.coryv4 said:
cheap way out is to calculate as close the nearest whole or half size. these jets are cheaper and available aftermarket(for instance, the aftermarkets usually go in 2.5 increments-140, 142.5, 145, 147.5 and so on) and supply yourself with at least one size up and down from that number, if not two.
testing is always the key, fuel screws will need to be adjusted, pilots changed, as well as the clip position on the needle. lots of other factors with the weather play heavily on jetting.