2003 Johnson ST 55 HP WRL 2 Stroke Commercial Service Repair Manual, P/N 5005483, Page 160Get this manual
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MIDSECTION EXHAUST HOUSING
Apply Nut Lock to threads of the lower mount to lower mount bracket screwsInstall and tighten the screws to torque of 18 to 20 ftIbs(25 to 27 Nm)E u