1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 28Get this manual

1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 28

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MAINTENANCE
CHECKSEALING DAMAGE (4) CHECKCRACKS

SPARK PLUG GAP: 0.6-0.7 mm 10.024-0.028 in} RECOMMENDED REPLACEMENT PLUG: NGK: DRSES-L (DR8ES, OR7ES) NOX24ESR-U (X27ESR-U, X22ESA-UI