1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 91Get this manual

[!!] Place vacuum passage O-ring into cavityr:;:;] Apply OMC Triple-Guard grease to one end of the small
spring and install greased end onto the air motor diaphragm's poppet valve(The grease will help stabilize the spring while assembling

[!!] Install the large spring onto the air motor diaphragm1141 While

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives