KAWI,HEAVY DUTY TC440A-C201 TWIN MIKUNIS BUID DATE 9-19-79 IN THE MANUEL I HAVE IT DOESNT TELL
HOW DO YOU ADJUST THE IDLE ON THE TWO CARBS, ITS IDLING AT 4GRAND AND IN SNOW IT WANTS TO TAKE OFF.
ALSO NOTICED LAST YEAR SEEMS LIKE THE TOP END IS GONE,DID COMP CHECK GOT 120LBS ,NEW BELT
SEEMS LIKE ITS FINE TILL 55-60 THEN FALLS OFF, ALMOST LIKE THERE WAS A NOTHER GEAR
ANY HELP, THANKS DAVE
INVADER,MIKUNI CARB QUESTION
INVADER,MIKUNI CARB QUESTION
75 800 440
79 TRAILFIRE 440
79 KAWI INVADER 440
06 SKI-DOO MACH Z 1000CC
79 TRAILFIRE 440
79 KAWI INVADER 440
06 SKI-DOO MACH Z 1000CC
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ICCSF 108
- Posts: 4369
- Joined: Sun Jul 17, 2005 12:00 am
- Real Name: Kenny Heins, AKA Grumpy
- Location: Blue Springs Mo.
- Contact:
Re: INVADER,MIKUNI CARB QUESTION
Dave, slide valve or butterfly? If slide valve then they adjust just like the ones on the Deere's.
Kenny
Kenny
AKA: Kenny, Grumpy, Mr. Richard Head
"I Hunt For it, Purchase it, Haul it, Sometimes Repair it, Sometimes Break it, Then Fix it Again, Label it, Warehouse it, Talk About it, So NOW, HOW Can I Take Any Less $$ For It?"
"God I love the smell of KLOTZ in the morning, That smell, you know that Gasoline/Oil Smell, MAKES the whole place SMELL like.. LIKE VICTORY. You know someday the 2 strokers are gonna end..."
Do Anti-War Protesters have reunions? If so what do they TALK about?
"I Hunt For it, Purchase it, Haul it, Sometimes Repair it, Sometimes Break it, Then Fix it Again, Label it, Warehouse it, Talk About it, So NOW, HOW Can I Take Any Less $$ For It?"
"God I love the smell of KLOTZ in the morning, That smell, you know that Gasoline/Oil Smell, MAKES the whole place SMELL like.. LIKE VICTORY. You know someday the 2 strokers are gonna end..."
Do Anti-War Protesters have reunions? If so what do they TALK about?
Re: INVADER,MIKUNI CARB QUESTION
IS THAT ON THE TOP ON THE SCREW ON CAP? WHERE CABLE GOES IN ,IS THAT THE ADJUSTMENT? DAVE
YEA ITS THE SLIDE.
YEA ITS THE SLIDE.
75 800 440
79 TRAILFIRE 440
79 KAWI INVADER 440
06 SKI-DOO MACH Z 1000CC
79 TRAILFIRE 440
79 KAWI INVADER 440
06 SKI-DOO MACH Z 1000CC
-
ICCSF 108
- Posts: 4369
- Joined: Sun Jul 17, 2005 12:00 am
- Real Name: Kenny Heins, AKA Grumpy
- Location: Blue Springs Mo.
- Contact:
Re: INVADER,MIKUNI CARB QUESTION
OK Dave, I found the post we were talking about, there is a brass screw with a big spring on it on about the lower to middle of the barrel of the carb body this screw is to set the Idle. But first of all you need to make sure that on the twin carbs that both Throttle valves are rising at the same time when you depress the throttle lever.
The way to to this is to remove the air box & with the engine shut off stick your first finger into one carb so you can feel the throttle valve then with your little finger of the same hand stick it in the other carb so you can feel the throttle valve on that carb also ( this is very tricky if you have small hands ) then with your other hand very slowly depress the throttle if one throttle valve opens before the other you need to either lower the throttle cable at the top of the carb of the one that opens first or raise the cable on the one which open last..
once you've got the throttle valves opening at the exact same time, then you also have to depress the throttle to WOT & make sure both throttle valves are in fact raising all the way up in the carb, if they are you shouldn't be able to see any of the throttle valve in the intake hole ( they should be above that..)
Now that you have this done it is time to adjust the idle. it is best to have a Carb Sync for Multi Carburetor, such as
ebay item # 190359707687. This is the best way to adjust the idle cheap, there are better ones but they are rather expensive..
You can also watch the tach & lower the throttle valve by screwing out the idle screw on one side then the other & mess with them until you think you have it but this is time consuming & this does not necessarily mean you have them correctly adjusted.. You just basically have them in the ballpark.
On some sleds when you put the air box back on & move the throttle cable this can screw up your throttle valve adjustment so watch for this happening also.
Also make sure if you have to screw out the throttle cable from the cap very far that the throttle valve is still returning all the way down @ idle, it should bottom out on the idle screw, if not the cable will be holding it up.. If you snap the throttle valve up with you finger you can hear the difference if it's hitting the idle screw or bottoming on the cable.
Good luck, If you run into a problem or don't quit understand all this call me I'll walk you through it 816-229-8765 home or 612-325-8527 cell
Kenny
The way to to this is to remove the air box & with the engine shut off stick your first finger into one carb so you can feel the throttle valve then with your little finger of the same hand stick it in the other carb so you can feel the throttle valve on that carb also ( this is very tricky if you have small hands ) then with your other hand very slowly depress the throttle if one throttle valve opens before the other you need to either lower the throttle cable at the top of the carb of the one that opens first or raise the cable on the one which open last..
once you've got the throttle valves opening at the exact same time, then you also have to depress the throttle to WOT & make sure both throttle valves are in fact raising all the way up in the carb, if they are you shouldn't be able to see any of the throttle valve in the intake hole ( they should be above that..)
Now that you have this done it is time to adjust the idle. it is best to have a Carb Sync for Multi Carburetor, such as
ebay item # 190359707687. This is the best way to adjust the idle cheap, there are better ones but they are rather expensive..
You can also watch the tach & lower the throttle valve by screwing out the idle screw on one side then the other & mess with them until you think you have it but this is time consuming & this does not necessarily mean you have them correctly adjusted.. You just basically have them in the ballpark.
On some sleds when you put the air box back on & move the throttle cable this can screw up your throttle valve adjustment so watch for this happening also.
Also make sure if you have to screw out the throttle cable from the cap very far that the throttle valve is still returning all the way down @ idle, it should bottom out on the idle screw, if not the cable will be holding it up.. If you snap the throttle valve up with you finger you can hear the difference if it's hitting the idle screw or bottoming on the cable.
Good luck, If you run into a problem or don't quit understand all this call me I'll walk you through it 816-229-8765 home or 612-325-8527 cell
Kenny
AKA: Kenny, Grumpy, Mr. Richard Head
"I Hunt For it, Purchase it, Haul it, Sometimes Repair it, Sometimes Break it, Then Fix it Again, Label it, Warehouse it, Talk About it, So NOW, HOW Can I Take Any Less $$ For It?"
"God I love the smell of KLOTZ in the morning, That smell, you know that Gasoline/Oil Smell, MAKES the whole place SMELL like.. LIKE VICTORY. You know someday the 2 strokers are gonna end..."
Do Anti-War Protesters have reunions? If so what do they TALK about?
"I Hunt For it, Purchase it, Haul it, Sometimes Repair it, Sometimes Break it, Then Fix it Again, Label it, Warehouse it, Talk About it, So NOW, HOW Can I Take Any Less $$ For It?"
"God I love the smell of KLOTZ in the morning, That smell, you know that Gasoline/Oil Smell, MAKES the whole place SMELL like.. LIKE VICTORY. You know someday the 2 strokers are gonna end..."
Do Anti-War Protesters have reunions? If so what do they TALK about?
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71bigblock
- Posts: 49
- Joined: Wed Jan 28, 2009 1:00 am
- Location: WI
Re: INVADER,MIKUNI CARB QUESTION
Kenny,
Great explanation on the throttle valve adjustment. I have a question, and I figured it'd be better off here than making a new thread.
When I adjusted the valve up just clearing the throttle on my '82 LF, now it wont come all the way back down to the idle screw. It's like it doesn't have enough throw.
It is definitely not bottoming out on the idle screw. That, and the screw in the cap is all the way up. Any help is appreciated, thanks
Great explanation on the throttle valve adjustment. I have a question, and I figured it'd be better off here than making a new thread.
When I adjusted the valve up just clearing the throttle on my '82 LF, now it wont come all the way back down to the idle screw. It's like it doesn't have enough throw.
It is definitely not bottoming out on the idle screw. That, and the screw in the cap is all the way up. Any help is appreciated, thanks
Mine- '79 340 Spitfire
'82 488/Xtra 10 Sportfire
Dad's- '77 440 Liquifire
'82 440 Liquifire
'82 488/Xtra 10 Sportfire
Dad's- '77 440 Liquifire
'82 440 Liquifire
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nitromag57
- Posts: 24
- Joined: Fri Jan 01, 2010 11:43 pm
- Location: midwest
Re: INVADER,MIKUNI CARB QUESTION
you might want to lube up cables and or pull cap off of carb inspect the valve spring and needle and cable,i had one of those cables come off the valve and got caught up in the spring and wasnt getting returned back down to the idle screw....nitromag57
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71bigblock
- Posts: 49
- Joined: Wed Jan 28, 2009 1:00 am
- Location: WI
Re: INVADER,MIKUNI CARB QUESTION
Thanks nitro. Yeah, there is definitely no hang up, I've had the tops off several times. If I adjust them down so that it idles correctly, then at WOT the air box side is even hanging down almost an 1/8 inch. Then when I adjust it so that the slide is all the way out of the carb throat, it doesnt come down and touch the idle screw. Its like there isnt enough throw. 
Mine- '79 340 Spitfire
'82 488/Xtra 10 Sportfire
Dad's- '77 440 Liquifire
'82 440 Liquifire
'82 488/Xtra 10 Sportfire
Dad's- '77 440 Liquifire
'82 440 Liquifire