Sometime (not always but, more times than not) when I start my Murray, I can only keep it running when I have it fully choked even after it has warmed up. I have sprayed cleaner into the carburator to clean out any dirt deposit with no change in problem. What else can I try or do to fix this problem. Thank You. Don
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Press primer bulb 6 times
Move throttle lever to start position
Move choke lever to full choke position
Pull starter rope sharply until engine attempts to start, but no more than 5 pulls.
Move choke lever to half choke position. Pull starter rope sharply engine runs. If engine hasn't started after 5 pulls, repeat all steps above.
After warming up for 10 seconds, move choke lever to run position.
Manuallib.com has a manual for this model available for free download
Most of these models have a automatic choke, located on the carburetor. Some are coil springs and others are electronic. There is no manual adjustment on these. Some older models had it included as part of the throttle control. My guess is yours is automatic and is part of the carburetor system.
They are common item to go bad.
Check you have petrol if the bike has not been run for sometime replace the fuel. Petrol ages and causes all manner of problems.
Are you trying to start the bike but it has gone onto reserve, move the fuel tap to the reserve position then try to start it. If the above fails, then try these:-
Is the spark plug wet when removed. If dry it sounds like the petrol is not getting through. Try opening the filler cap and leave it open, make sure the kill switch is in the run position. Try starting with the throttle full open. Does the bike have a manual choke try to start with the throttle shut, choke off, then full on, then while continuing to turn over move the choke lever in stages from fully on to fully off. I find on my Yam TW125 (winter and bad weather hack) that if I have not used it for a while sharp twist the throttle a couple of times no more than a third of a turn. Hope this helps.
Normal starting practice is always done with the ignition on, primer as many times as it takes to 3/4 fill the bulb, move choke to full closed, crank engine until it fires once, move choke to half if there is a half position, crank engine until it starts and runs, move choke to full off.
Could a gas/oil mix been used by mistake. When you cleaned carb did you also clean dusty air filter?? Try leaveing off filter first and run. Are you sure you are in "choke position" when engines seems to be running ok,be sure to double check yourself here. If engine runs ecelleant in "choke" sounds like your in "Run" position and positioning is problem not performance.