Yamaha XS500 Service & Repair Manual Set, 1976–1979 (P/N LIT-11616-00-08)

Both supplements specify the XS500B Service Manual as their companion reference; the E supplement also requires the C supplement. The base volume included here identifies the 1H2 XS500.

The base PDF has missing pages within several repair sequences, affecting clutch adjustment and portions of crankcase, oil-pump, piston-ring, steering-head, and swingarm work.

PDF Search, Bookmarks and Page Breakdown

Navigation and wiring detail: Text search is unavailable in all three PDFs. The base manual has six embedded bookmarks covering the index, four main chapters, and wiring diagram; neither supplement has bookmarks. Small wiring labels require zooming in the inspected diagrams, and some lines in the base diagram are pale.

The ZIP contains three printable PDFs totaling 369 pages. This includes two opening pages, two repeated scans, and four unnumbered cable-routing pages in the base volume; four cover/front-matter pages and an unnumbered wiring diagram in the C supplement; and three cover/front-matter pages in the E supplement. The base manual presents English, French, and German in parallel columns, while both supplements are in English.

Engine Overhaul, Carburetor Service and Electrical Diagnosis

These selected workshop topics outline the repair coverage. Further sections include tire-and-tube service and rear-shock inspection.

• Engine repair: Step-by-step procedures for engine removal, cylinder-head disassembly, valve-guide replacement, valve-seat cutting and lapping, and cam-chain timing.

• Clutch and transmission: Wet multi-plate clutch repair, transmission assembly, shifter adjustment, and balancer-chain assembly and adjustment.

• Carburetor service: Mikuni BS38 and BS34 constant-vacuum carburetors, including float-level checks, vacuum-gauge synchronization, and idle-speed adjustment.

• Brakes and chassis: Front and rear disc-brake overhaul and bleeding, wheel-bearing replacement, and front-fork disassembly and seal replacement.

• Electrical diagnosis: Contact-breaker ignition, charging-system checks, starter-motor inspection, and self-canceling turn-signal tests.

• Diagrams and assembly views: Three full-motorcycle wiring diagrams, separate ignition and charging circuits, mechanical exploded views, and cable-routing drawings.

These Yamaha service publications were written for dealer service personnel; the XS500C supplement specifically calls for qualified mechanics with prior product knowledge.

Engine Troubleshooting and Internal Repair

Engine troubleshooting charts address hard starting, rough idle, loss of power, overheating, and white exhaust. Checks are grouped by ignition, fuel, compression, and lubrication faults, helping a mechanic relate a symptom to the relevant component tests.

Internal engine repair data covers cylinder and piston measurements, crankshaft runout, and main- and connecting-rod bearing selection by stamped component codes. The bearing tables warn that incorrect inserts can cause seizure. Cam-chain installation notes identify the risk of bent valves from incorrect intake-cam timing.

The Schematic Diagram of Oil Route traces the wet sump’s separate feed and scavenging circuits. The transmission layout and clutch exploded view show shaft, gear, plate, and spacer relationships for assembly checks.

Carburetor and Fuel-System Differences

The C supplement includes exhaust-CO mixture adjustment. The E supplement introduces vacuum-operated fuel petcocks and a two-position starter circuit, and identifies its idle mixture as a factory setting dealers should not alter.

Wheel and Brake Updates

The cast aluminum wheels are specified for use with tubes. The E brake update removes the caliper shim and changes the pad springs to a one-piece design.

When working on vintage motorcycles, always verify local workshop safety standards and ensure the machine is securely mounted before beginning any inspection to prevent accidental tipping.

Charging Tests and Harness Routing

The charging-system wiring diagram supports field- and stator-coil tests, rectifier checks, and Hitachi IC-regulator diagnosis. Regulator data distinguishes TR1Z-17 in the base manual from TR1Z-31 in the supplements.

The E supplement’s Electrical Circuit Diagram and Cable Routing Diagram add the fuse layout, wire color codes, and harness routing needed for electrical repair.

Factory Reference Data and Special Tools

Factory specifications provide cylinder-head fastener torque tables, intake and exhaust valve clearances, front-fork oil capacities, and component wear limits.

Special-tool references identify clutch holder 90890-01024, rotor puller 90890-01080, and vacuum gauge 90890-03048.

Examples of XS500C Fork-Fill and Wheel-Runout Data

The XS500C front-fork installation section specifies an oil quantity of 160 ±3 cc per fork leg.

For its cast aluminum wheels, the inspection specifications give rim-runout limits of 2 mm vertically and 1 mm laterally.