Yamaha EK25BMH Service Manual Manual pdf 124 page image
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Yamaha EK25BMH Service Manual

Also see for EK25BMH: Rigging guideRigging guide

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Contents
  1. how to use this manual
  2. GENERAL INFORMATION
  3. CONTENTS
  4. Table Of Contents
  5. Table Of Contents
  6. SERIAL NUMBER
  7. FIRE PREVENTION
  8. GOOD WORKING PRACTICES
  9. DISASSEMBLY AND ASSEMBLY
  10. MEASURING
  11. 17 Shimming plate
  12. REMOVING AND INSTALLING
  13. POWER UNIT
  14. IGNITION SYSTEM
  15. COOLING SYSTEM
  16. TILLER HANDLE
  17. general specifications
  18. maintenance specifications
  19. RECOIL STARTER
  20. ADJ E
  21. Table Of Contents
  22. maintenance interval chart
  23. fuel system
  24. control system
  25. adjusting the engine idle speed
  26. power unit
  27. lower unit
  28. lubrication points
  29. Table Of Contents
  30. fuel joint, fuel filter, and fuel pump
  31. checking the fuel joint
  32. fuel pump
  33. checking the fuel pump
  34. assembling the fuel pump
  35. disassembling the carburetor
  36. checking the carburetor
  37. assembling the carburetor
  38. installing the carburetor
  39. POWR E
  40. Table Of Contents
  41. Table Of Contents
  42. checking the recoil starter
  43. assembling the recoil starter
  44. installing the recoil starter
  45. installing the flywheel magnet
  46. removing the power unit
  47. magnet base and control lever
  48. intake manifold and reed valves
  49. checking the reed valves
  50. checking the cylinder head
  51. checking the thermostat
  52. installing the cylinder head and cylinder head cover
  53. exhaust cover
  54. checking the exhaust cover
  55. removing the crankcase
  56. assembling the oil seal housing
  57. crankshaft and cylinder body
  58. checking the cylinder body
  59. checking the piston
  60. checking the piston pins and small-end bearings
  61. checking the pisotn rings
  62. installing the piston and piston rings
  63. checking the anode
  64. crank shaft
  65. removing the crankshaft bearing
  66. assembling the crankshaft
  67. installing crankshaft bearing
  68. LOWR E
  69. Table Of Contents
  70. Table Of Contents
  71. removing the propeller
  72. water pump
  73. checking the water pump housing
  74. shift rod
  75. propeller shaft housing
  76. disassembling the propeller shaft housing
  77. checking the reverse gear
  78. checking the dog clutch
  79. drive shaft
  80. removing the drive shaft
  81. installing the drive shaft
  82. lower case
  83. checking the drive shaft sleeve
  84. checking the needle bearing
  85. selecting the pinion shims
  86. selecting the forward gear shims
  87. selecting the reverse gear shims
  88. measuring the forward gear backlash
  89. measuring the reverse gear backlash
  90. BRKT E
  91. BRACKET UNIT
  92. steering handle
  93. checking the steering handle
  94. bottom cowling
  95. checking the bottom cowling
  96. shift actuator
  97. removing the bracket
  98. assembling the shift actuator
  99. upper case
  100. checking the upper case
  101. disassembling the upper case
  102. checking the exhaust manifold
  103. steering arm
  104. checking the steering arm
  105. checking the clamp brackets
  106. installing the clamp brackets
  107. – + ELEC E
  108. ELECTRICAL SYSTEM
  109. electrical component
  110. electrical components analysis
  111. measuring a low resistance
  112. checking the ignition spark gap
  113. checking the spark plug caps
  114. checking the ignition coils
  115. checking the charge coil
  116. checking the pulser coil
  117. checking the cdi unit
  118. ignition control system
  119. checking the lighting coil
  120. TROUBLE ANALYSIS
Yamaha EK25BMH Service Manual Manual pdf 124 page image
CRANKSHAFT AND CYLINDER BODY5-35EPOWR2. Measure:• Runout(Use a crank stand alignment anddial gauge.)Out of specification →Repair/replace.3. Measure:• Connecting rod side clearance(Use a thickness gauge.)Out of specification →Repair/replace.4. Measure:• Axial playOut of specification →Repair/replace.Crank stand alignment90890-03107Dial gauge set90890-01252Runout limit0.03 mm (0.0012 in)Connecting rod side clearance0.2 - 0.7 mm (0.0079 - 0.0276 in)Maximum axial play2.0 mm (0.079 in)def
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EK25BMH
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