WILL NOT REV

find the bottom carb , see where the linkage from the remote cable moves the lever on the side of the engine then disconnect the cable from the remotes ! on the bottom carb there should be a screw to adjust the tickover where the linkage meets the carb linkage , turn it in 2 turns then with water attatched to water intake on gearbox turned on start the engine , it mite be slightly high or low pending ! set at 900rpm , rev engine several times back to tickover and if ok then refit throttle cable , cable should be pushing lever against its stop and then when you select forward gear it shouldnt move till you throttle up ! when in water start engine and select forward gear and tickover should be 7 to 800rpm and idle ok if not adjust till ok !

clean the carb and check spark plug !

hi there jaybolt

here is a website for parts

http://www.partstree.com/parts/?lc=echo&mn=SRM-2100+Type+1+S%2FN%3A+001001+-+159490

all being well and compression and spark and timming , muffler is clear , carby is clean , and diaphrams are all ok you mention carb rebuilt , fresh mix , and fuel filter and lines are good

does the unit run with 2 stroke mix in the plug hole - then stop ?
if yes assume compression and spark are ok,, if no check compression and spark and muffler

will the unit run with 2 stroke mix sprayed into the carby throat, then stop ?

if it does sounds like you have a air leak somewhere in the intake system

could be at barrel base gasket, c/case joint, manifold boot/ block gasket, carby gasket , impulse hose ,if this unit has one , c/case main seals leaking

2 strokes need air tight c/cases in order to pump fuel / air / oil mixture from c/case to cylinder
and to create a vacuum for entry of fuel/ air / oil mix from carb to c/case

symptoms of air leak are -: hard to start, wont idle, stalling, low power, inconsistant idle, over rev
overheat

pressure and vacuum testing can be done by blocking off intake and exhaust with rubber and metal plates , then fitting adapter to spark plug hole , and placing piston at bdc , pressureise cylinder to 7 to 8 psi of pressure and check areas , base gasket, manifold joint, main seals, , impulse hose ? for leaks with soapy water - if leaking bubbles will be evident

if no leaks and pressure is held at 7 psi for at least 2 minutes with dropping - presure test is good
next do the same test using vaccuum again go to 20 - 30 inch / vaccuum

if vaccuum held unit is ok

suggest take a good look at carby and recheck its rebuilt correctly and setup particularly if P and V test are good and spark coil tests good with a coil load test using a spark gap of 6.00 mm to stress the coil ( simulates spark under compression load)

have a look and let me know what you find

cheers pauly46

It would be best if the whole carburetor were soaked in carb cleaner and then blown out with compressed air. You could have a plugged up passageway in the carburetor. If you take this route and use comercially available carburetor cleaner, DO NOT put any rubber or plastic parts from your carb in the carb cleaner as it will ruin them. As for the jets, make sure you can see light through them. I usually take a strand of copper wire (like from stranded automotive electrical wire) and run it through the jets to make sure they are clean.
If this fails to correct the situation, check the engine's compression. Low compression will cause the engine to not run at low RPM. You need to see at least 140PSI of compression (throttle wide open) in order for the engine to idle. If the compression is low, adjust the valve tappet clearances. If this fails to bring the compression to a normal level, then the engine needs internal repairs.

Remove the slide from the throat of the carb, move the clip on the jet needle one notch lower. This will richen the low end fuel/air mix. - - - Simple, quick, and free.

Do it, then rate this answer as "Very Helpful". Thanks.

sounds like your idle jet is clogged, remove your carb and clean idle jet cause it won't idle or kick start without it...good luck to you friend...Tim