Subaru/Robin EHO 35 help needed

I noticed my R-S wants to stall out at idle now that it's really hot. I hold the throttle open a teeny bit when stopped (easy to do with a trigger throttle), or if it's a long stoplight I just let it die and restart when ready to move (very easy to do, need to open the throttle some as it tends to flood).
 
I noticed my R-S wants to stall out at idle now that it's really hot. I hold the throttle open a teeny bit when stopped (easy to do with a trigger throttle), or if it's a long stoplight I just let it die and restart when ready to move (very easy to do, need to open the throttle some as it tends to flood).

Is it bogging down or only idling poorly?
 
In hot weather, just increase the idle screw to an acceptable rate, what's the big deal?
 
Sounds like the carb just may be a bit dirty. With the quality of gas, these days, It can easily happen. " Seafoam " is a tinkerer's best friend.
 
I had this same problem & tried a bunch of things before getting it figured out.
The stock black fuel line that draws gas up from the tank to the engine is very easily crimped going thru the grommet & was restricting the gas flow at WOT when the engine got warm.
I went to my ACE hardware store & bought some thicker clear fuel line and replaced the black one.
Problem solved.
Before solving the mystery, I drilled large holes in the black plastic air filter cover to allow more air flow, I found a gas station near a boat ramp that sells non-ethanol premium fuel, I cut off most of the engine shroud for better cooling at 30+ mph, inspected the spark plug for color & gap, played with oil levels & removed the black rubber doohicky under the gas gap for air venting.
Hope this info helps someone.
Engine runs out strong now...
-lowracer-
 
With my R-S 35 on a FD setup, I can't go full throttle around the middle rpm range cause it will bog, but only at full throttle. Once near top speed, it can go full throttle though. I'm not sure if its overheating or something is wrong. It didn't do that the first month or so of ownership though.
 
With my R-S 35 on a FD setup, I can't go full throttle around the middle rpm range cause it will bog, but only at full throttle. Once near top speed, it can go full throttle though. I'm not sure if its overheating or something is wrong. It didn't do that the first month or so of ownership though.

How's the plug look? Hot...cool? Check your air filter, clean? The EHO35's have a felt and foam element. I remove the felt and oil the foam with 30W. The felt is really for extreme duty, industrial applications with a lot of dust.
 
How's the plug look? Hot...cool? Check your air filter, clean? The EHO35's have a felt and foam element. I remove the felt and oil the foam with 30W. The felt is really for extreme duty, industrial applications with a lot of dust.

Great advice, I haven't even thought to check the plug, its the original and I haven't had it to long, like 6 months maybe. I'll be sure to check the plug and the filter area.
 
mbatl,
Next time this happens, reach back and loosen the gas cap a little. If the engine 'unbogs' take the gas cap apart and remove the rubber duckbill then snap it back together. These motors create a powerful suction that overwhelms that valve.
 
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