Amazon Secure Payment System Continue shopping “Idle Adjustment Knob & Retaining Ring – 9.9 & 15 hp – 1974 to 1985 – Johnson Evinrude – OMC 387272” has been added to your cart. Product Price Quantity Subtotal × Johnson Evinrude E-Tec Aluminum 3 Blade Prop Propeller 10" x 15" 0763486 $120.99 Johnson Evinrude E-Tec Aluminum 3 Blade Prop Propeller 10" x 15" 0763486 quantity $120.99 × Idle Adjustment Knob & Retaining Ring - 9.9 & 15 hp - 1974 to 1985 - Johnson Evinrude - OMC 387272 $25.82 Idle Adjustment Knob & Retaining Ring - 9.9 & 15 hp - 1974 to 1985 - Johnson Evinrude - OMC 387272 quantity $25.82 Coupon: Apply coupon Update cart Cart totals Subtotal $146.81 Total $146.81 Proceed to checkout