Yamaha xl760 1998 hi low screw settings - PWC Forum: The best hang-out for Personal WaterCraft enthusiasts
 
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post #1 of 4 (permalink) Old 03-30-2019, 05:24 PM Thread Starter
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Yamaha xl760 1998 hi low screw settings

Hi all after a bit of advice hopefully you can help. I have a 1998 Yamaha xl760 has allways run fine till I stripped and rebuilt the carbs as have done many times before with no problems but this time I removed the high and low speed screws and set them to what the manual says but now when I ride it it runs fine mid range seems to struggle a little at the top end but if I go flat out then release the throttle and straight back onto it it seems to bog down any ideas please?
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post #2 of 4 (permalink) Old 03-31-2019, 04:47 AM
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Did you get the screws mixed up ? They are not the same. Did you reuse the needle spring and use a true Mikuni kit ? Did you get the regulator diaphragm installed correctly ? What are the setting you put the screws at ? You should always verify and document mixture screw settings before removing. Look at the plugs and see if it's running rich or lean. How easy does it start ? What happens if you go full throttle from idle ?
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post #3 of 4 (permalink) Old 03-31-2019, 09:35 AM
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Originally Posted by rodsatheart View Post
Did you get the screws mixed up ? They are not the same. Did you reuse the needle spring and use a true Mikuni kit ? Did you get the regulator diaphragm installed correctly ? What are the setting you put the screws at ? You should always verify and document mixture screw settings before removing. Look at the plugs and see if it's running rich or lean. How easy does it start ? What happens if you go full throttle from idle ?
Dang, Rod....you really know your stuff!
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post #4 of 4 (permalink) Old 04-01-2019, 05:17 AM
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I wouldn't get to carried away. lol
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