POWERHEAD
Page 4A-32 90-855347R1 JANUARY 1999
4. Thoroughly inspect center main roller bearings. Replace bearings if they are rusted,
fractured, worn, galled or badly discolored.
Center Main Roller Bearing
5. Clean (with solvent) and dry crankshaft roller bearing that is installed in upper end cap.
Lubricate bearing with light oil.
6. Thoroughly inspect upper end cap roller bearing. If roller bearing is rusted, fractured,
worn, galled, badly discolored or loose inside of end cap replace end cap and roller
bearing as an assembly.
Upper Roller Bearing
Reed Block Assembly
IMPORTANT: DO NOT remove reeds from reed blocks, unless replacement is nec-
essary. DO NOT turn used reeds over for re-use. Replace reeds in sets only.
1. Thoroughly clean gasket surfaces of reed blocks and reed block housing. Check for
deep grooves, cracks and distortion that could cause leakage. Replace parts as nec-
essary.
2. Inspect reed block neoprene surface for wear, cuts or abrasions. Replace reed
block(s) as required.
3. Check for chipped and broken reeds.
020
051
56161
Allowable reed opening is 0.020 in. (0.51 mm) or less. Replace reeds if either reed is
standing open more than 0.020 in. (0.51 mm).
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