What was found
WHILE PERFORMING CHECK OF TWIST GRIP SOLENOID, ENGAGED SOLENOID BY PLACING THE AUTO/MAN SWITCH TO MAN MODE FOR A TOTAL OF 10 MINUTES. AFTER 10 MINUTE PERIOD HAD ELAPSED. RETURNED AUTO/MAN SWITCH TO AUTO. AFTER 15 SECONDS, MOVED AUTO/MAN SWITCH BACK TO MAN, PISTON FROM SOLENOID FAILED TO MOVE. PISTON SHOULD HAVE RETRACTED IMMEDIATELY. SOLENOID OVERHEATED AND MALFUNCTIONED. RECOMMENDATION TO PREVENT RECURRENCE: REPLACING CURRENT PN OF SOLENOID WITH ONE THAT CAN EITHER RUN COOLER OR WITHSTAND THE HEAT. (K)