1987-1991 Yamaha Exciter EX570 & EX570E Snowmobile Service Manual (P/N 82M-000101)
578 Pages • 14.05 MB • Instant, Printable PDF
Yamaha Models Covered & Key Technical Specifications
Models: 1987–1991 Yamaha Exciter EX570, 1987–1991 Yamaha Exciter EX570E
Sub-models / Variants: EX570L, Exciter, Exciter High Altitude, Exciter II
Trade Names: Exciter
Model Years: 1987–1991
Serial Numbers: 82M-000101 and later
Technical Data:
- Engine idle speed: 1,400–1,600 r/min
- Cylinder bore: 73.00–73.02 mm (2.874–2.875 in)
- Spark plug gap: 0.7–0.8 mm (0.028–0.031 in)
- Throttle cable free play: 1.0–2.0 mm (0.04–0.08 in)
- Cylinder head bolt torque: 33 Nm (3.3 m-kg, 24 ft-lb)
- Standard spark plug: BR9ES (N.G.K.)
- Cooling system capacity: 4.2 liters (3.7 Imp qt, 4.4 US qt)
Yamaha Manual Features & Content Preview
- Covers 1987–1991 Yamaha Exciter EX570, EX570E, EX570L, High Altitude, and Exciter II variants from the 82M-series build
- Official 578-page OEM publication (Form 82M-000101) detailing factory maintenance, engine teardowns, and chassis adjustments
- Features 47 detailed exploded-view diagrams, 8 high-altitude tuning charts, and 12 engine and drive system torque tables
- Serves as the primary workshop reference for exact carburetor jetting and clutch engagement settings
Factory Maintenance and Overhaul Documentation
Mechanics need reliable data fast. This service manual delivers the exact specifications required for comprehensive teardowns and routine upkeep on the entire Exciter series. Chapters systematically break down general machine identification, scheduled maintenance intervals, and cooling system requirements. You get straightforward documentation covering power train adjustments, chassis work, and electrical component diagnostics. All outlined procedures highlight the factory-recommended intervals necessary to keep these machines running hard across unpredictable snow conditions.
Specification Highlights and Technical Reference
Inside, you will find the critical reference values required for the Yamaha EX570. The guide meticulously outlines fluid capacities, timing curves, and precise mechanical tolerances. Standard idle speed is officially listed at 1,400–1,600 r/min. For top-end work, the cylinder head specification table details intake clearance tolerances from 0.11 to 0.20 mm. When reassembling the powerhead, cylinder head bolt torque values follow a strict multi-stage sequence culminating in a final 33 Nm specification. The documentation also dives deep into high-altitude parameters, giving you the factory baselines for jetting and clutch tuning. Safety remains a priority in any professional shop; always verify your procedures and consult a certified technician before executing major structural or engine repairs on this equipment.
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