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Contents
C H A P T E R 1 4
Fuel System Service
265
Troubleshooting the Fuel System 265
Hard Starts 265
Checking Air-Fuel Mixture 266
Checking Gravity-Fed Fuel Supply 267
Checking a Fuel Pump 268
Other Checks 268
Carburetor Adjustments 268
High Speed and Idle Mixture Adjustment 269
Carburetor Overhaul 269
Carburetor Removal 270
Carburetor Disassembly 270
Diaphragm Carburetor Disassembly 273
Cleaning the Carburetor 274
Inspecting Float Carburetor Parts 274
Assembling Float-Type Carburetors 276
Inspecting Diaphragm Carburetor Parts 278
Assembling a Diaphragm Carburetor 279
Engine Governor Service 280
Resetting a Centrifugal Governor System 280
Governor Adjustment 281
C H A P T E R 1 5
Ignition and Electrical System
Service
291
Ignition System Service 291
Performing a Spark Test 291
Spark Plugs 292
Magneto System Service 295
Servicing Battery Ignition Systems 297
Electrical System Service 297
Batteries 297
Wiring 302
Ammeters 302
Switches and Solenoids 302
Checking the Charging and Starting System
Circuits 302
C H A P T E R 1 6
Engine Disassembly and
Inspection
311
Introduction 311
Engine Inspection 312
Engine Removal 313
Engine Disassembly 314
Removal of Exterior Engine Components 314
Organizing the Job 317
Disassembling the Engine’s Mechanical
Systems 318
Removing the Valve Assemblies on an L-Head
Engine 324
Removing the Valve Assemblies on an
Overhead Valve Engine 325
C H A P T E R 1 7
Cylinder, Crankshaft, and Piston
Service
329
Cylinder Reconditioning 329
Cylinder Inspection 329
Cylinder Measurement 330
Reboring the Cylinder 331
Honing the Cylinder 332
Crankshaft and Main Bearing Service 333
Inspecting the Crankshaft 334
Inspecting the Main Bearings 335
Piston Assembly Service 336
Checking Piston Clearance 337
Ring Side Clearance 337
Removing Piston Pins 338
Measuring Piston Pins and Bosses 339
Inspecting Connecting Rods 339
C H A P T E R 1 8
Camshaft and Valve Train Service
341
Introduction 341
Camshaft Service 341
Valve Service 343
Inspecting Valves and Seats 343
Inspecting Valve Springs 343
Valve Guides 343
Refacing Valves 346
Valve Lifter Service 346
Valve Seat Service 348
Lapping Valves 350
Adjusting Valve Lifter-to-Stem Clearance 353
Servicing Overhead Valves, Seats, and
Guides 354