Sean Shameless
XS400 Enthusiast
Hello all, I'm have a small fuel leak problem. I've read a pile of old posts here on the subject but each is a little different so I figured I'd start my own.
I've also included a pic of my petcock for clarity (that sounds dirty).
So I bought a somewhat modified 1981 XS400HS.
I bought it starting and running (and it did). The PO said the carbs were just rebuilt and cleaned but needs to be tuned and needed air filters.
After being parked overnight I noticed the next day that there had been a slow fuel leak. I traced it to the air filter boot.
I noticed the petcock was on res so I put it in the down "on" position but have since read either position should be fine and it shouldn't be flooding the carbs.
As a noob mechanic I just want to put a plan of attack together and run it past you guys.
-I'm thinking I could either temporarily add an on/off valve to control mess while working on things or should I just drain the tank?
-Then I can change the oil, filter and clean the sump screen. (I'm assuming it's full of gas at this point).
-Get a kit and rebuild the petcock And reinstall (following the guide on here) http://www.xs400.com/threads/how-to-rebuild-your-leaky-or-starving-petcock.8033/
Kit: http://www.siriusconinc.com/pro-detail.php?pid=&product_id=1787
-remove the carbs and check the float valve level using the service manual on here.
-reinstall carbs.
-Adjust the synchronization using the manometer here http://www.xs400.com/threads/cheap-manometer-for-carb-sync.5437/ and use the process in the service manual mentioned above.
Install the air filters and try it all out.
Air Filter: http://www.motorcycle-superstore.co...tlink&utm_medium=affiliate&utm_campaign=41227
I'm super green here so feel free to school me.
I've also included a pic of my petcock for clarity (that sounds dirty).
So I bought a somewhat modified 1981 XS400HS.
I bought it starting and running (and it did). The PO said the carbs were just rebuilt and cleaned but needs to be tuned and needed air filters.
After being parked overnight I noticed the next day that there had been a slow fuel leak. I traced it to the air filter boot.
I noticed the petcock was on res so I put it in the down "on" position but have since read either position should be fine and it shouldn't be flooding the carbs.
As a noob mechanic I just want to put a plan of attack together and run it past you guys.
-I'm thinking I could either temporarily add an on/off valve to control mess while working on things or should I just drain the tank?
-Then I can change the oil, filter and clean the sump screen. (I'm assuming it's full of gas at this point).
-Get a kit and rebuild the petcock And reinstall (following the guide on here) http://www.xs400.com/threads/how-to-rebuild-your-leaky-or-starving-petcock.8033/
Kit: http://www.siriusconinc.com/pro-detail.php?pid=&product_id=1787
-remove the carbs and check the float valve level using the service manual on here.
-reinstall carbs.
-Adjust the synchronization using the manometer here http://www.xs400.com/threads/cheap-manometer-for-carb-sync.5437/ and use the process in the service manual mentioned above.
Install the air filters and try it all out.
Air Filter: http://www.motorcycle-superstore.co...tlink&utm_medium=affiliate&utm_campaign=41227
I'm super green here so feel free to school me.
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