Pilot Screw Adjustment for the Recon 250 ('97 and up)
This may also be suitable information for the same year 250SX quad.
Note:
-The pilot screw is factory pre-set. Adjustment is not necessary unless the carburetor is overhauled or new pilot screws are installed.
-The engine must be warm for accurate adjustment. Ten minutes of stop-and-go riding is sufficient.
-Use a tachometer with gradations of 50 rpm or smaller that will accurately indicate 50 rpm change.
1. Turn the pilot screw clockwise until it seats lightly, then back it out to the specification given.
CAUTION: Damage to the pilot screw seat will occur if the pilot screw is tightened against the seat.
TOOL:
Pilot screw wrench 07908-4220201
INITIAL OPENING:
'97 (except California type): 2 7/8 turns out
'97 CA type: 2 3/4 turns out
'98 - 2001: 2 5/8 turns out
After 2001: 2 turns out
2. Warm the engine up to operating temp.
3. Stop the engine and connect a tachometer according to the tach. manufacturer's instructions.
4. Start the engine and adjust the idle speed with the throttle stop screw.
IDLE SPEED: 1,400 +/- 100 rpm
5. Turn the pilot screw in or out slowly to obtain the highest engine speed.
6. Readjust the idle speed with the throttle stop screw
7. Turn the pilot screw in gradually until the engine speed drops 100 rpm.
8. Turn the pilot screw counterclockwise the number of specified turns.
FINAL OPENING:
'97 (except CA type) 3/4 turn out
'97 CA type/'98-2001: 7/8 turn out
After 2001: 1/2 turn out
9. Readjust the idle speed with the throttle stop screw.
For those who do not know, the throttle stop screw is on the right side of the carb. right behind the mounting stud where the carb. attaches to the intake rubber.
The pilot screw is on the front center underneath side close to the engine cylinder.
The above info. was taken from Honda's '97-'04 Recon service manual, and I hope this helps many. Print it out, and get it covered with your greasy fingerprints, and then throw it away!
I do not have a tach or a pilot screw wrench, but I do have ears and a screwdriver. I used these baseline settings to dial my wife's bike in perfectly. You can too.
This may also be suitable information for the same year 250SX quad.
Note:
-The pilot screw is factory pre-set. Adjustment is not necessary unless the carburetor is overhauled or new pilot screws are installed.
-The engine must be warm for accurate adjustment. Ten minutes of stop-and-go riding is sufficient.
-Use a tachometer with gradations of 50 rpm or smaller that will accurately indicate 50 rpm change.
1. Turn the pilot screw clockwise until it seats lightly, then back it out to the specification given.
CAUTION: Damage to the pilot screw seat will occur if the pilot screw is tightened against the seat.
TOOL:
Pilot screw wrench 07908-4220201
INITIAL OPENING:
'97 (except California type): 2 7/8 turns out
'97 CA type: 2 3/4 turns out
'98 - 2001: 2 5/8 turns out
After 2001: 2 turns out
2. Warm the engine up to operating temp.
3. Stop the engine and connect a tachometer according to the tach. manufacturer's instructions.
4. Start the engine and adjust the idle speed with the throttle stop screw.
IDLE SPEED: 1,400 +/- 100 rpm
5. Turn the pilot screw in or out slowly to obtain the highest engine speed.
6. Readjust the idle speed with the throttle stop screw
7. Turn the pilot screw in gradually until the engine speed drops 100 rpm.
8. Turn the pilot screw counterclockwise the number of specified turns.
FINAL OPENING:
'97 (except CA type) 3/4 turn out
'97 CA type/'98-2001: 7/8 turn out
After 2001: 1/2 turn out
9. Readjust the idle speed with the throttle stop screw.
For those who do not know, the throttle stop screw is on the right side of the carb. right behind the mounting stud where the carb. attaches to the intake rubber.
The pilot screw is on the front center underneath side close to the engine cylinder.
The above info. was taken from Honda's '97-'04 Recon service manual, and I hope this helps many. Print it out, and get it covered with your greasy fingerprints, and then throw it away!
I do not have a tach or a pilot screw wrench, but I do have ears and a screwdriver. I used these baseline settings to dial my wife's bike in perfectly. You can too.
Honda 400ex Carburetor Float Adjustment Tool
Carburetor Carb Rebuild Kit Repair for Honda TRX400EX 400EX TRX 400 EX 1999-2004 Rating Required Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name. I just rebuilt an 05 400ex and im having some carb issues. I have cleaned the carb over and over and i still have gas flowing out of the overflow tube. The fourth protocol torrent download free. Hoyle board games 2001. Is there a way to adjust the float heights like there is on a raptor? Lectron is celebrating 45 years of helping riders get the most from their vehicles with our high performance carburetors and EFI. Thanks for your support!
Honda 400ex Carb Diagram
I just bought a 2007 400ex used and when I got the the previous owner had twisted the idle screw pretty bad and the quad was stuck idling kinda high.The quad had run wonderfully before I replaced the cable. Anyways, after replacing the cable I try to start it up and it wont turn over when choked. Then I turn the choke off it starts with much hesitation and when it finally does it sounds horrible with tons of backfiring almost popping/ grinding noises. I turned it off right away so that I didn't dig myself into an even deeper hole.
After that I checked the oil and it looked fine but the pipe was SUPER hot. I think it might be getting way to much air and not enough fuel. First off where is the air/fuel screw and which way should I turn it to give it more fuel? I've heard all the way in and 3 turns out is a good starting point but I really have know idea what I'm talking about lol. Thanks a lot any help would be greatly appreciated!
After that I checked the oil and it looked fine but the pipe was SUPER hot. I think it might be getting way to much air and not enough fuel. First off where is the air/fuel screw and which way should I turn it to give it more fuel? I've heard all the way in and 3 turns out is a good starting point but I really have know idea what I'm talking about lol. Thanks a lot any help would be greatly appreciated!
