Cuyuna aircraft engine service manual 1980 - 1995 2SI

REPRINT – 2si Manual No. 1273 PREFACE The following is a reprint of the Service Manual (2si Part No. 1273), covering engines manufactured by the Cuyuna Engine Company, originally of Crosby, Minnesota. This manual is applicable to: MOST ENGINES MANUFACTURED THROUGH 1994 and SOME ENGINES MANUFACTURED INTO 1995 In 1995, Cuyuna Engine Company merged with AMW Engine Company to become AMW Cuyuna Engine Company, Inc. The latter remains the company's official corporate title, while the trade name "2 Stroke International" (abbreviated 2si) was adopted in 1996. The year 1995 also marks the initiation of design changes and introduction of new engine models. In 1996, the original format of bound manuals began to be replaced by a new format--modular sections, specialized by model groups, assembled in ring binders. This new format permits ease of updating, and the capability of adding new sections as they are developed. Owner's Manuals in the new format were introduced in 1997. Overhaul and repair sections are scheduled to be completed in 2001. Since basic construction (crankcase, cylinders, heads) of newer engine models remains similar to earlier models, basic repair and overhaul procedures detailed in this Early Models manual are generally applicable to the newer engines. Changes in general engine specifications, electrical systems, fuel systems and other areas are covered in the new manuals. For ALL AIRCRAFT INQUIRIES Contact: Z D E Phone 618-584-3567 2987 N. State Hwy 1, PO Box 247 Fax 618-584-3569 Flat Rock, IL 62427 For AUTO RACING , INDUSTRIAL , WATERCRAFT , and All Other Inquiries, contact: 2 Stroke International Phone 843-846-2167 8 Schein Loop Fax 843-846-2169 Beaufort, SC 29906-8524 E-mail engines@2si.com 2 Stroke International ENGINE MODEL NUMBERING SYSTEM (For engines manufactured approximately 1996 and later. Specifications and availability subject to change.) 690 L 70 NOMINAL DISPLACEMENT COOLING SYSTEM NOMINAL 1-Cylinder 2-Cylinder 3-Cylinder A = Free Air Cooled HORSEPOWER (PP) 230cc 460cc 690cc F = Fan Cooled (RV) 500cc 808cc L = Liquid Cooled or 540cc (PP) = Piston Ported Line (formerly Cuyuna) (RV) = Reed Valve Line (formerly AMW) 1998 by 2 Stroke International Beaufort, SC USA All Rights Reserved Rev. 04/01 (Solely owned and operated by AMW Cuyuna Engine Co., Inc)

REPRINT – 2si Manual No. 1273 2si EQUIPMENT SPECIFICATIONS (Approximately 1996 through 1999): CARBURETOR APPLICATIONS : IGNITION SYSTEM APPLICATIONS: BING MIKUNI KOKUSAN PHELON 1 PHELON 2 230A-20 230A-20 230F-20 230F-20 230F-22 (230F-22)* 230F-22 230L-25 230L-25 ♦ 230L-25 460F-35 460F-35 460F-40 460F-40 460L-46 460F-45 460F-45 500/540R2c ♠ 460L-46 460L-50 460L-50 ♦ 460L-50 540L-70 500/540R2c ♠ 540L-70 ♣ 690L-70 690L-70 ♦ 690L-70 808L-95 808L-95 ♣ 808L-100 ♣♥ *Optional ♦ Marine (Standard) ♠ SCCA ♣ Electroair DIS (Optional) ♥ Mechanical Fuel Injection DATES (VERY APPROXIMATE) CUYUNA PREVIOUS MODEL DESIGNATION SYSTEMS: 1994 – 1995 Displacement No. (cc) followed by one or more of the following two-letter suffixes: FA = Free Air Cooled, FC = Fan Cooled, DC = Dual Carbs, FI = Fuel Injection, LC = Liquid Cooled, GB = Gearbox Included, ES = Electric Start Included, RF = Reverse Flow (Fan), (Engine Model 430 FC also referred to as “ULII02”) Prior to 1994 Displacement No. (cc) (Except ULII02, which = 430) followed by one or more of the following letter suffixes: D = Direct Drive, G = Gearbox Included (?), HP = High Performance, R = Standard Crankcase (not machined for reduction), RF = Reverse Flow (Fan), RR = Machined to receive Reduction Assembly Cuyuna Serial Numbers are sequential based on order of manufacture, regardless of engine model or type. VERY APPROXIMATE YEARS AND INCLUSIVE SERIAL NUMBERS (when known): 1981 09000 – 12680 1982 12681 – 18142 1983 18143 – 20124 1984 20125 - 1985 1986 1987 1988 25353 – 27384 1989 27385 – 28509 1990 28510 - 1991 1992 1993 1994 1995 1996 1997 - 60573 1998 60574 -61229 1999 61230 – 61297

REPRINT – 2si Manual No. 1273

REPRINT – 2si Manual No. 1273 Marine Addendum ................................................ A1

REPRINT – 2si Manual No. 1273 This is an historical document. Covering engines from 1980 to early 1995. 1

Cuyuna aircraft engine service manual 1980 - 1995 2SI

You're Reading a Preview

Recently Viewed