Mercury - Exhaust Valve - .015 Oversize - Fits MCM 496 Mag & HO & MIE 8.1S & HO - 881680 Microfiber Cloths and Chamois predictable response is required over

predictable response is required over longer helm-to-engine routing distances

Confirm that part number N80-83660-40-00 matches your Yamaha outboard

The Yamaha Premier II Control Cable | 4 Foot | MAR-CABLE-04-SC helps restore consistent control feel in compatible Yamaha mechanical throttle and shift applications

Remove spark plugs

Mercury - Exhaust Valve - .015 Oversize - Fits MCM 496 Mag & HO & MIE 8.1S & HO - 881680 Microfiber Cloths and Chamois predictable response is required over. 015 (. 38 mm) Oversize Fits MCM 496 Mag & HO; also MIE 8. 1S & HO WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings. ca. gov.