1991 Yamaha Outboard Factory Service Manual 9.9 and 15 HP, Page 73Get this manual
bPlace the bushing around the magneto control lever and bolt the lever to the recoil hand starter stayInstall the spark plugsTo install, first screw in by hand until they stop and then tighten another 14 turn using wrench 3Recoi hand starter stay
cConnect the joint link coming from the CD magneto base to the magneto control leverFit the spark plug caps over the spark plugs