1998 johnson 25hp. idle,kick,die

470fish

Recruit
Joined
Jul 17, 2008
Messages
3
i have a 1998 25hp. johnson electric start,tiller. starts easy..idle a few seconds...kicks,puff of smoke, then dies. once in start at idle (before it kicks)shift into gear..go to higher higher rpm..runs fine...back to the load trailer..at idle warmed up...kicks then dies..takes a couple attempts to load..kick and die. i performed a decarbon as instructed on can of johnson power tune..checked diaphram in fuel pump (ok) cleaned an inspected tank..all lines of fuel..compressed air fuel pump screen (ok)..checked coils ohm (ok)..spark plugs in very good shape (ok)did not replace. ohm on plug wires (ok)..new gas (ok)..removed carb disassembled cleaned and soaked overnite. now my question is the stator low voltage output. has anybody had a similar problem with this (kick die at low rpm?)
 

woody66912

Senior Chief Petty Officer
Joined
Jul 12, 2008
Messages
690
Re: 1998 johnson 25hp. idle,kick,die

turn throttle back to idle stop look at throttle roller cam should have 1/8 in gap if not loosen screw on throttle linkage and set gap.set low speed out 2 1/2 turns if your low speed screw is on the side of carb 1 1/2 if on front. then set idle stop screw to your liking.
 

470fish

Recruit
Joined
Jul 17, 2008
Messages
3
Re: 1998 johnson 25hp. idle,kick,die

thank you.this could be my problem...i did (screw with this)no pun intended,but not sure of the setting. i will set this today or check to see the cam roller is correct...mean while i am waiting for rebuild for fuel pump rebuild.and quick disconnect tank to engine. i will reply on my findings:)
 
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