A jet clip question...

sleddineinar

sleddineinar

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Ramsey Minnesota, United States
Today, I got new main jets (142.5) and replaced the stock jets and changed the needle jet clips to the 2.5 position. Here's my problem, maybe... when i was replacing the needle with the washers in their new position, I lost the top washer in the center carb, as it went past the linkage it flicked off into oblivion.

Do I need that washer? I searched for 20 minutes all over the bench and floor. I couldn't find it any where. I'm heading out tomorrow to go riding.
 
no, it wont stop you from riding as you should have just placed both of the white clips on top of the metal clip for the sx700 engine, so if it only has 1 up top, it wont hurt anything, until you change the settings someday if needed.
 
mrviper700 said:
no, it wont stop you from riding as you should have just placed both of the white clips on top of the metal clip for the sx700 engine, so if it only has 1 up top, it wont hurt anything, until you change the settings someday if needed.
Click to expand...

Isn't one under and one over, that's what the write up in the tech section shows?
 
if your doing the sx700 set up with 142.5 mains, you drop the needles a half, which is both shims on top of the clip, metal clip remains in groove #3, fuel screws at 1.5-1.75 dependingupon how hard andaggressive the clutching is. This along with reed spacers, and clutching will really wake up the sx700 engine. This is also good to 20 below.
 
OK. I was just going by the diagram in the tech section, that shows the clip staying in the 3rd slot and only one washer moving to above the clip and that was labeled the 2.5 position.

BTW, here's how the carbs were set up. Stock mains, the clip in the 2nd position and the fuel screws set to 1.25 turns. The clutch looks like something from Haucks website with a solid red spring and their helix. I bought this sled from the second owner who said he did'nt do anything to it.
 
Hmm, I just changed mine last week, and both were under, now Im one each side... runs great. Would I see better with both on top (storage position)?? I have 142.5 mains, fuel screws at 1.75. What would 1.5 do? Got 101 on GPS last week, that 1.25 rip sure slows it down. Dreamometer was about 112mph. Next step is a new gear for me. Wanted it for trip this w/e, but ran outta time.
 
One further question guys. Here's what I found when I cleaned these carbs. Stock jets (main & pilot) fuel screws set to 1.25 turns and the needle clips set to the #2 position (with both washers under the clip). Were they trying to lean this sled out without installing new jets? And... What is effected by the fuel screw, I know that turning it in further leans it out, but where? first part of throttle, mid range or wot?
 
Sleddineinar, I cant answer for what someone else tried on your sled before, but if I had to guess they tried to clear up the stumble/burble so common on that engine.

the fuel screw controls the fuel flow for the low end part of the throttle curve, its from idle to just above 1/4 throttle. A good rule of thumb is if you need them adjusted out past 2 turns from lightly seated to keep the sled from bogging on take off, youll need the next size up in pilot jet. If you go out past 2 turns much, youll really reduce the spring tension on the fuel screws and they can possibly vibrate out, losing them.
 
I always thought it was one shim on top and one on bottom or both on bottom. Never knew you could do both on top.
 
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