Small Engines (Lawn Mowers, etc.): Keyed Ignition Doesnt Work, starter solenoid, chassis frame

Question
I purchased a Scotts riding mower model S1742 ID:M01742s061796, engine is B%26S 17hp sn:0274532, year is 6/19/2000. The ignition switch doesn't turnover the engine. When I turn the key all the way to the start position nothing happens, but I do hear the solenoid "click". The 15A fuse is good, battery is good, and I even replaced the switch as a shotgun approach. I can start the engine by shorting across the solenoid's battery and starter terminals. Any guidance would be appreciated.

Answer
hi rod

sounds like youve narrowed it down already    ruling out bat, fuse , ig switch

check battery negative lead for good grounding , clean ground if need

fit jump from metal earth of soleoid to  a metal earth on chassis frame  
retest if cranks and starts poor earth  was a fault

but sounds like you will need to replace the starter solenoid  but 1st check for 12 volt @ solenoild tab (Small wire  from ignition switch) does it have 12 volt when key turned to start mode   y/n

if yes turn switch on   then  take a jump wire and link it across the from the hot post of solenoid and put other end of wire to solenoid tab  ( starter should should operate  the starter motor ) engine should start  if so faulty solenoid      o/c solenoid windings or burnd ht contacts


cheers hope this helps

paul