Yamaha 1976 SS338 Condensed Service Data

Also see for 396: Owner's manual

Yamaha ENGINESYAMAHA1976 AND LATERE338, SS338 AN D SS433 TWOCYLINDER MODELSCONDENSED SERVICE DATAEngine Model E338 88338 88433Bore-(mm) . . .. . . ... . . . .. . . . .... 60 60 68Inches ......... ....... ..... . 2.362 2.362 2.677Str oke-(mm) .... . .. ... .. . . ... . . 59.6 59.6 59.6Inches .. ........ . .. . .... .... 2.346 2.340 2.346No. of Cylinders .. . . ... .... . .... 2 2 2Displacement-co . . .. . . . . . .. . . . . . 338 338 433Cubic Inches . . . . . . . . . ... . . .. . 20 I). 20.63 26.4CoolingType . ... . .. . ... ........ Fr ee Air " Free Air Free Air"Carburetor Model .... . . .. . .. . Mikuni (B) Keihin (PW) Keihin (PW)"Number Used .... ..... , ...... 1 1 1Ignition:Type .. . .. .. , .... ... . cm cm cmTiming BT,_(' .............. 1.5-1.7 mm 1.6mm 1.6mmSpark P', Li ........................ BR9EV"" BR9EV BR9EV""·1· Electrode Gap (mm) . ....... . 0.5-0.6t 0.5-0.6 0.5-0.6Inch . . . . . .... . . . .. .. . .. . 0.020-0.024t 0.020-0.024 0.020-0.024Fuel/Oil Ratio .... ... ..... . . .. . . Autolube Autolube Autolube"Models prior to 1980 use Free Air cooling. All 1980-1981 models are equipped withAxial Fan .""Engine models prior to 1978 use Keihin (PW) model carburetors. All 1978-1981models use Keihin (BD) model carburetors."""Models prior to 1980 use BR9EV. All 1980-1981 models use BR9ES.tModels prior to 1979 use 0.5-0.6 mm (0.020-0.024 inch) electrode gap. All1979-1981 models use 0.7-0.8 mm (0.028-0.031 inch) electrode gap.on E338 models, 2,000 rpm on S8338 Model NumberMAINTENANCE models and 1,500 rpm on 88433 models.Initial fuel/air mixture setting is as 19768PARK PLUG. Selection of spark follows: SS338 155plug will depend upon type of service SS433 155and ambient temperature. Standard Model Turns Outplug is given in Condensed Service Data 1977table . Excessively cold weather and/or 1976-1977 8S338 150light load conditions may require spark 88338 1 8S433 150plugs of warmer heat range. Hard 88433 P/4usage, heavy loads and warm weather 1978may require spark plugs of colder heat 1978 S8338 140range. SS338 P /8 8S433 1528S433 P/2 E338 220CARBURETOR. A Keihin (PW) typecarburetor is used on S8 models prior to 1979-1981 1979-19811978 and a Keihin (BD) type carburetor 88433 16/8 8S433 145is used on 1978-1981 SS models. A E338 240Mikuni (B) type carburetor is used on 1978-1981E338 models. Carburetor is installed on E338 1 If carburetor is removed for overhaul ,a "Y" type intake manifold and provides refer to LUBRICATION section for synthe fuel/air mixture to both cylinders. Standard carburetor main jet is as chronizing Autolube pump to throttleStandard idle speed setting is 1,700 rpm follows: opening.294