1997-2001 Honda TRX250 Fourtrax Recon Service Manual, Page 49Get this manual
MAINTENANCE REUSING SPARK PLUG Clean the spark plug electrodes with wire br ush or special plug cleaner Check the gap between the center and side electrodes wi wire -ty pe fee ler gauge If necessa ry, adjust the gap by bending the side electrode carefully SPARK PLUG GAP: CAUTIONTo prevent damage to the cylinder head, handtighten the spark plug before using wrench to tighten to the specified torque0.8 0.9 mm (0030.04 in)
0.80.9 mm (0.030.04 inl
Reins tall he spark pl ug in the cy linder head and ha nd tighten, then torque to specificat ion TORQUE18 Nm (1 .8 kgf.m13 Ibf.ft)
REPLACING SPARK PLUG
Set the plug gap to specifica ti on with wire -type feeler ga uge (see above) CAU TIONDo not overtighten the spark plug