The Fuel tap on my bike originally had a Reserve position along with a main position, as a result the holes to get two fuel lines in needed to be reduced to less than 2mm.
My replacement that I made has only one position, the holes are large and the fuel line is very direct to the carb.
I have "touch wood" no issues with the stator not making sparks at the spark plug. Only once did it not start when hot by the kick starter. I rolled down hill and bumped started and it fired within 1 wheel rotation, (it may be a bit like a weed-eater, two ignition circuits slow running and fast).
I have noticed that the 2009 Sherco fuel settings are a little different to the 2011 Scorpa even though the engines and the carbs are the same (I think).
I am wondering if I should have replaced or had worked on getting a new Stator just in case this is the issue. Late now for Warranty I suppose.
As stated I like thgis bike and is light years ahead of the old 1973 TY250 I sold on purchasing this.
I am new to this forum, Lots of great information that has helped in locating and fixing a problem with my "new" bike.
I have had this for 1 year and every time I went for a "long" ride the bike would run out of fuel when running at 3/4 to full throttle, riding between sections that are quite some distance apart. Stopping and waiting for a small moment the engine then slowly returned to its happy state.
I had looked at float level, Jet sizes, and float jet size. none of these fixed the issue.
I increased the float jet size from the factory 2.5mm to 3.0mm, no luck on running out of fuel.
I the pulled the fuel tap off the tank and disassembled this and the plastic tube (that is the main) had a hole of 1.8mm down through it, this looked as if was the restriction I was looking for. I have made a new tap from a very small ball valve and some manufacturing, it now has a opening in the line to the carbie no smaller than 3.8mm.
Something I have also noted the tap lies horizontal and then as such the reserve on the tap is pointless, It seems not a lot of thought has gone into the bike beyond getting them out and keeping the cost down.
To date touch wood, all is running as I would have expected from the factory. The engine is one of those Sherco excess to their needs engines using one of those Delorto PBH26 carbies (I hope I have the numbers correct here).
I must add I LOVE the bike, Steers Really great, Starts ALWAYS, Has lots and lots of Snot (more than the rider can always handle).
I really hope this helps someone else in the same way the information here (mostly in the Sherco section) has helped me.
2011 Sr280 Running Lean
in Scorpa
Posted
Hi Yamfan
The Fuel tap on my bike originally had a Reserve position along with a main position, as a result the holes to get two fuel lines in needed to be reduced to less than 2mm.
My replacement that I made has only one position, the holes are large and the fuel line is very direct to the carb.
I have "touch wood" no issues with the stator not making sparks at the spark plug. Only once did it not start when hot by the kick starter. I rolled down hill and bumped started and it fired within 1 wheel rotation, (it may be a bit like a weed-eater, two ignition circuits slow running and fast).
I have noticed that the 2009 Sherco fuel settings are a little different to the 2011 Scorpa even though the engines and the carbs are the same (I think).
I am wondering if I should have replaced or had worked on getting a new Stator just in case this is the issue. Late now for Warranty I suppose.
As stated I like thgis bike and is light years ahead of the old 1973 TY250 I sold on purchasing this.