1 - 15 SPECIAL TOOLS GEN INFO Tool No. Tool name/How to use Illustration 90890-01430 YM-38404 Ring nut wrench This tool is needed to removing and installing the middle driven shaft bearing retainer. 90890-01467 YM-01467 Gear lash measurement tool This tool is used to measure the gear lash. 90890-01701 YU-01880 Sheave holder This tool is needed to hold the primary sheave when removing or installing the sheave bolts. Set 90890-03081 YU-33223 Adapter 90890-04082 YU-33223-3 Compression gauge Adapter (Compression gauge) These tools are needed to measure engine compression. 90890-03112 YU-03112 Pocket tester This instrument is needed for checking the electrical system.
90890-03113 Engine tachometer This tool is needed for observing engine rpm. 90890-03141 YM-33277-A Timing light This tool is necessary for checking igni- tion timing. Compressor 90890-04019 YM-04019 Attachment 90890-01243 Valve spring compressor Valve spring compressor attachment This tool is needed to remove and install the valve assemblies. Middle driven shaft bearing driver 90890-04058 YM-04058-1 Mechanical seal installer 90890-04078 YM-33221 Middle driven shaft bearing driver Mechanical seal installer These tools are used to install the water pump seal.