Joined
·
4,264 Posts
of those of you new to the FCR carb, JD jetting is an acknowledged gurru in FCR setup
JD jetting
They've had the 525 on there dyno and there special needle and jet kits are ready to go.
dyno time
JD's recommended specs with there special red needle is:
Try running the following-
#42 pilot jet
1 3/4 turns out
Red marked needle in the #5 from top clip position
#175 main jet
Thicker O-ring installed on the accelerator pump linkage
The JD needle puts in more fuel on the low end, not unusual to be one size smaller on the idle.
O ring is a special trick for the squirter, details are in the kit.
squirt me
JD jetting
They've had the 525 on there dyno and there special needle and jet kits are ready to go.
dyno time
JD's recommended specs with there special red needle is:
Try running the following-
#42 pilot jet
1 3/4 turns out
Red marked needle in the #5 from top clip position
#175 main jet
Thicker O-ring installed on the accelerator pump linkage
The JD needle puts in more fuel on the low end, not unusual to be one size smaller on the idle.
O ring is a special trick for the squirter, details are in the kit.

squirt me