Mercury Mariner Models 135 150 175 200 Service Manual, Page 134Get this manual
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MAINTENANCE
25 BTDC 19 BTDC 26 BTDC 20 BTDC 22 BTDC 16 BTDC 24 BTDC 18 BTDC 24 BTDC 18 BTDC
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90-878079 JANUARY 2000