1974 DT250 NeedleJet / Jet Needle - what sizes were they?
5DP7 jet needle. O-0 needle jet.
^^yep that's what I came up with.
I see why you're asking John. The Yamaha data for the 250A is all messed up and co-mingled with the 360A.
My records gave me this (after a little cross-referencing and back checking)
DT250A
MJ #140
PJ #50
NJ O-0 I believe this is a 169 type. It is the same nozzle as the DS7 and same type used in the R5
JN #5DP7
Slide 2.0
Just to confuse.
My DT250A, that I believe is stock..
VM30
MJ 150 BUT CAP IS STAMPED 180
JN 5DP7-1LEAN
NJ O-8 (241 SERIES)
CA 2.0
SJ .026"
NV 2.5 STEEL WITH SPRING
PJ 50
Cliff
ok thanks guys
What about a 1975 DT250?
Quote from: Twill864 on December 18, 2022, 12:17:59 PM
What about a 1975 DT250?
This is what I have.
Note: The main may be a #150 or #160, the spec sheet is not clear and there are two parts marked as standard
DT250BCarb: Mikuni VM28SS (ID no. 49861)
MJ #160
PJ #50
NJ O-4 (169 type)
JN #5F21-4
Slide 3.0
Starter jet #60
Air screw 1-3/4
Float 17.5mm