tx750 special interest site
  MOTORCYCLE SERVICE NEWS NUMBER
302
PAGE
4 of 4
  YAMAHA INTERNATIONAL CORPORATION
BUENA PARK, CALIFORNIA 90620
DATE 12/8/72
 

TX750                         MISCELLANEOUS SERVICE INSTRUCTIONS (cont.)

SELECTION OF CRANKSHAFT AND CONNECTION ROD INSERTS (cont.)
 
The correct insert can be determined by one of the following formulas.
 
Crankshaft Inserts
 
Crankshaft Housing No. minus (-) Crankshaft Journal No. = Crankshaft Insert No.
 
    Example: If crankcase Housing No. is 6 and Crankshaft Journal No. is 2, then, 6 - 2 = 4; No. 4 insert should be used.
 
Connecting Rod Inserts
 
  Connecting Rod No. minus (-) Crankpin Journal No. = Connecting Rod Insert No.
 
    Example: If Connecting Rod No. is 5 and Crankpin Journal No. is 2, then, 5 - 2 = 3; No. 3 insert should be used.
 
OIL CLEARANCE
 
Oil clearance after installation may be determined by the "Plastigage" method. Correct oil clearance will be:
 
      Crankshaft bearings - .036 ~.059mm (.0014"~.0023")
Connecting Rod bearings - .034~.057mm (.0013"~.0022")