2003 Honda ATV TRX650FA Rincon Factory Service Manual, Page 15Get this manual
GENERAL INFORMATION
IGNITION SYSTEM SPECIFICATIONS
Spark plug
ITEM Standard-
For extended high speed riding Spark plug gap Ignition coil peak voltage Ignition pulse generator peak voltage Ignition timing ("F" mark)
SPECIFICATIONS IFR5L 11 (NGK) VK16PRZ11 (DENSO) IFR6L 11 (NGK) VK20PRZ11 (DENSO) 1.01.1 mm (0.0390.043 in) 100 minimum 0.7 minimum 13 BTDC at idle