This repair manual is a great source of repair and maintenance information for vintage bike collectors, owners and do-it-yourself restorers. Packed with tips and techniques for most 2-stroke engines over 85cc. Covers Allstate, Benelli, Bridgestone, Broncco, BSA, Bultaco, Ducati, Garelli, Harley, Hodaka, Honda, Kawasaki, Maico, Montesa, Moto Beta, Ossa, Puch, Rex, Sachs, Suzuki, Villiers, White, and Yamaha. Clymer motorcycle repair manuals can help do-it-yourself mechanics save you money on maintenance and repair expenses. Coverage in these books range from basic scheduled maintenance chores to advanced repairs such as engine rebuild, electrical system troubleshooting, brake system service and more.
Book Excerpt: Two-Stroke Motorcycles: 1960s to Mid-1970s Repair Manual SPARK PLUG
SERVICE FUNDAMENTALS
Subject: 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975 Two-Stroke Motorcycles service, maintenance, repair. ISBN-10: 0872883868 | ISBN-13: 9780872883864 | Clymer VCS2
Book Excerpt: Two-Stroke Motorcycles: 1960s to Mid-1970s Repair Manual SPARK PLUG
In any spark ignition engine, the spark plug provides the means for igniting the compressed fuel-air mixture in the cylinder. Before an electric charge can move across an air gap, the intervening air must be charged with electricity, or ionized. The spark plug gap becomes more easily ionized if the spark plug ground (G4 - Fig. 1-18) is of negative polarity. If the spark plug is properly gapped and the system is not shorted, not more than 7,000 volts may be required to initiate a spark. Higher voltage is required as the spark plug warms up, or if compression pressures or the distance of the air gap is increased.
THREAD SIZE The threaded, shell portion of the spark plug and the attaching holes in the cylinder are manufactured to meet certain industry established standards. The diameter is referred to as "Thread Size." Those commonly used are: 10MM, 14MM, 18mm, 7/8 inch and 1/2 inch pipe.
SERVICE FUNDAMENTALS
CARBURETOR The bulk of carburetor service consists of cleaning, inspection and adjustment. After considerable service it may become necessary to overhaul the carburetor and renew worn parts to restore original operating efficiency. Although carburetor condition affects engine operating economy and power, ignition and engine compression must also be considered to determine and correct causes. Before dismantling carburetor for cleaning and inspection, clean all external surfaces and remove accumulated dirt and grease. If fuel starvation is suspected, all filters in carburetor, shut-off valve and tank should be inspected. Because of inadequate fuel handling methods, rust and other foreign matter may sometimes block or partially block these filters. Under no circumstances should these filters be removed from the fuel system.
Subject: 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975 Two-Stroke Motorcycles service, maintenance, repair. ISBN-10: 0872883868 | ISBN-13: 9780872883864 | Clymer VCS2
TABLE of CONTENTS:
GENERAL
Engine Design Fundamentals: Operating Principles | Service Fundamentals: Troubleshooting, Maintenance, Repairs, Frame and Components | Metric Conversion Table | Degree Wheel.
SINGLE CYLINDER MODELS
ALLSTATE: Allstate 150, Sears 150
BENELLI: Cobra, California, Scrambler
BRIDGESTONE: 90 Standard, Trail, Mtn., Sport, 100, Sport, GP, TMX
BRONCCO: TX-9
BSA: D1, D7
BULTACO: 100, 125, 175, 200, 250
DUCATI: 100 Cadet, 100 Mountaineer
GARELLI: KL100, KL100A, KL100M
HARLEY-DAVIDSON: 125, Hummer, Ranger, Pacer (BTU), 165, Super 10, Pacer (BT), Scat
HODAKA: Ace 90, Ace 100, 100B, Dirt Squirt, Super Rat (100 MX), 125 Wombat, 125 Combat Wombat
HONDA: CR125M, MT125, CR250M, MT250
KAWASAKI: D1, C2SS, C2TR, MC1, MC1M, G3SS, G3TR, G31M, G3TR-100, G4TR, G5, KS 125, KX125, F1, F1TR, F2, F2TR, F3, F4, F21M, F5, F6, F7, F8, F81M, F9, F11, F11A
MAICO: 250, 360, 400, 501
MONTESA: 125, 175, 250, 360
MOTO BETA: XC100 Enduro Raider MX
OSSA: 160, 175, 250
PUCH: 125, 175
REX: (See GARELLI)
SACHS: K-103, 100/4, 1001/5A, 1001/6A, 1001/6B, 1251/5A, 1251/6A, 1251/6B, 1251/6C
SUZUKI: TS90, TC90, TS100, TC100, A100, AS100, AC100, B100-P, B105-P, TC120, TS125R, TS125J, TS125K, TC125J, TC125K, TM125K, TS185R, TS185J, TS185K, TS250, TS250II, TS250R, TS250J, TS250K, TM250J, TM250K, TM400, TS400.
VILLIERS: 3K, 4F, 6F, 9F, 31C, 2L, 3L, 9E, Mark 31A, 32A, 34A, 35A, 36A
WHITE: 250 Shooting Star, 250 Super Sport
YAMAHA: YL-2, YL-2C, YA-6, L5T, HT1, HT1-B, HT1B-MX, AT1, AT1B, AT1C, AT1-M, AT1B-MX, AT1C-MX, CT1, CT1B, CT1C, LT2, LT3, DT100A, LT2M, LTMX, MX100A, AT2, AT3, DT125A, AT2M, ATMX, MX125A, CT2, CT3, DT175A, MX175A, DT1, DT1B, DT1C, DT1E, DT1-MX, DT1C-MX, DT1E-MX, RT1, RT1B, RT1-MX, RT1B-MX, DT2, DT3, DT250A, DT2-MX, MX250, MX250A, RT2, RT3, DT360A, RT2-MX, MX360, MX360A, SC500, SC500A
MULTI-CYLINDER MODELS
ALLSTATE: 175, 250
BRIDGESTONE: 175 Dual Twin, 175 Hurricane Scrambler, MII SS, MII RS, 350 GTO, 350 GTR
KAWASAKI: A1, A1SS, A7, A7SS, A1-R Road Racer, A7-R Road Racer, S1, S1-A, S1-B, S2, S2-A, S3, H1, H1-B, H1-C, H1-D, H1-E, H2, H2A, H2B
SUZUKI: T125, T125II, T125R, Adventurer GT-185K, GT-185L, T10, Olympian S32-2, X-5 Invader, X-5 Stingray, T200, TC200, X-6 Hustler, X-6 Scrambler, T20, TC250, T250 (X-6R), T250II, T250R, T250J, GT250K, GT250L, T305, TC305, T350, T350II, T350R, T350J, GT380J, GT380K, GT380L, T500, T500II, T500III, T500R, T500J, T500K, T500L, GT550J, GT550K, GT550L, GT750J, GT750K, GT750L
YAMAHA: YL-1, YL-1E, HS-1, HS-1B, LS2, YCS1, YCS1-C, YAS1, YAS1-C, AS2C, CS3B, CS3C, CS5, RD200A, YDS-3, YM-1, TD1A, TD1B, TD1C, YDS-5, YM2C, DS6, YR-1, YR-2, YR-2C, R-3, R-3C, R3 RR, DS7, R5, R5B, RD250, RD250A, RD350, RD350A
