Vespa Scooters Rotary-Valve Repair Shop Manual 1959-1978

SKU: HYM126-978

Vespa Scooters Rotary-Valve Repair Shop Manual 1959-1978

SKU: HYM126-978
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Vespa Scooters Rotary-Valve Repair Shop Manual 1959-1978

MSRP: $51.95
Only $45.95
free shipping (US48)

in stock

Adding to cart… The item has been added
This repair manual covers 1959-1978 Vespa Rotary-Valve scooters, including the following models:
  • Vespa 90 V9A1
  • Vespa 90 Super Sport V9SS1
  • Vespa Racer V9SS2
  • Vespa 232L2
  • Vespa 125 VMA1
  • Vespa Primavera VMA2
  • Vespa Sportique 312L2
  • Vespa Super VBC1
  • Vespa GL VLA1
  • Vespa Sprint VLB1
  • Vespa Rally VSD1
  • Vespa Rally 200 Electronic

Book Excerpt: 1959-1978 Vespa Scooters Rotary-Valve Repair Shop Manual ENGINE, CLUTCH AND GEARBOX
DISMANTLING THE ENGINE AND GEARBOX: REMOVING THE CYLINDER HEAD, BARREL AND PISTON
  1. The cylinder head is retained by four nuts, one of which has an extension to provide anchorage for the engine cowling. Remove this extension and each of the four nuts and the flat washer on which each seats. The cylinder head can then be removed. Note that no seating gasket is employed at the cylinder head/barrel joint which is a ground, recessed fit.
  2. Slide the cylinder barrel upward along the holding down studs, taking care to catch the piston as it emerges from the bore. If the engine is not to be stripped completely, it is advisable to pad the mouth of the crankcase with a clean rag before the piston is disengaged from the bore. This will prevent particles of piston ring from dropping into the crankcase in the event of ring breakages.
  3. To remove the piston, first detach one of the grudgeon pin circlips, then tap the grudgeon pin out of position while the piston is steadied. If the pin is a tight fit, a rag soaked in warm water placed on the piston crown will help expand the piston and ease the grip on the pin. When the piston is removed, mark the inside of the skirt to show which way the piston faces. This will obviate the risk of the piston being replaced in the reverse position, an important consideration when the piston crown embodies a deflector. A reversed piston will cause a surprising loss of power, the cause of which will prove very difficult to detect. If the piston does not have a deflector, the crown will be stamped with an arrow which MUST face the exhaust. Reversal will bring the ends of the piston rings into contact with the ports and cause an engine seizure or ring breakage.

IGNITION SYSTEM
GENERAL DESCRIPTION A flywheel generator fitted to the end of the crankshaft provides the current for operating the ignition circuit and recharging the battery which forms part of the lighting circuit. Because the output from the generator is AC it is necessary to incorporate a rectifier in the circuit to convert this output to DC so that the battery can be charged. An external ignition coil is used to generate the spark used to ignite the mixture in the cylinder. The current for this coil is derived from the flywheel generator and in consequence the ignition circuit functions quite independently of the battery.

Subject: 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978 Vespa service, maintenance, repair. ISBN-10: 0856961264 | ISBN-13: 9780856961267 | Haynes 126
TABLE of CONTENTS:
  • Maintenance
  • Engine, clutch and transmission
  • Fuel system and lubrication
  • Ignition system
  • Frame and forks
  • Wheels, brakes and tires
  • Electrical system, including wiring diagrams

Specifications

  • Publisher: Haynes Manuals
  • Pages: 94 - Hundreds of b&w photos and illustrations
  • Binding: Paperback - 8.25 x 11 inches
  • ISBN: 978-0-85696-126-7
  • Years: 1959 - 1978