1973-1978 Honda XL175 Shop Manual (P/N 6136201)
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Honda Models Covered & Key Technical Specifications
Models: Honda XL175
Model Years: 1973–1978
Serial Numbers: XL175E-2008517 and subsequent
Technical Data:
- Engine displacement: 173 cc
- Engine type: Air-cooled 4-stroke O.H.C. single cylinder
- Max horsepower: 15 BHP at 8,500 rpm
- Transmission type: 5-speed constant mesh
- Fuel system: Carburetor with 1,200 rpm idle speed
- Drive system: Chain drive
- Ignition type: Battery and ignition coil
- Electrical system: 6V-6AH battery
Honda Manual Features & Content Preview
- Covers 1973–1978 Honda XL175 single-cylinder 4-stroke motorcycles, featuring the 173 cc OHC engine and 5-speed transmission architecture
- Official Honda publication 6136201, first edition 1973
- Contains 51 technical diagrams, 7 detailed specification tables, and a full-page wiring schematic for the complete electrical system
- Acts as the foundational reference for the full production run, documenting critical timing and adjustment specs necessary for a standard service or complete engine repair
Component and Systems Walkthrough
This manual outlines the complete mechanical and electrical architecture of the Honda XL175. It delivers a detailed breakdown of standard maintenance checkpoints and deep-engine overhauls without relying on guesswork. Mechanics will find exact inspection criteria for the powertrain. This includes valve clearance settings, ignition timing, and carburetor balancing. Working on vintage motorcycles carries inherent physical risks. Always verify chassis stability on a proper lift and use appropriate protective gear before handling heavy engine components.
The documentation walks through the complete disassembly and evaluation of the cylinder head, camshaft, crankshaft, and transmission. Frame-focused chapters cover the steering head, front fork, rear suspension, and braking systems. Electrical sections explain the testing procedures for the A.C. generator, silicon diode rectifier, and voltage regulator. A complete wiring schematic allows for accurate charging circuit diagnostics during any electrical repair.
Specifications and Reference Values
Shop professionals rely on exact factory reference data to maintain historical accuracy and operational safety. This section outlines critical tolerance limits for engine internals and provides definitive torque specifications. Cylinder head nuts require 15.2–20.3 lbs-ft (220–280 kg-cm). Intake valve clearance sits at 0.05 mm, while the exhaust clearance is specified at 0.08 mm. The contact breaker point gap measures 0.3–0.4 mm.
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