Mixture Screw Kit - Mixture Screw, Mixture Screw Rubber O-Ring, Blind Plug Washer, Spring and Washer. (Includes All Contents Shown) Fits: Stock Mikuni BS34 CV Carbs. Note: This Mixture Screw is 20.5mm in length, there are 2 different sizes that were used. Be sure to measure your old one to confirm this is the size you require before purchasing Plug covers vertical re-cessed idle mixture screw & keeps out contaminants. O-Ring fits under metal Washer at bottom of mixture screw hole and the engine will not idle properly if it is not present - (O-ring is often disintegrated). These parts are not shown in service & parts listings as Yamaha did not want "emissions" related parts accessed, however adjustments were often necessary to get New bikes to run properly. Suggested setting position of the normally hidden mixture screw is 2 1/2 to 3 turns out from bottom.

Float Needle With Clip - Viton Tipped Needle & Clip Only! Fits: Stock 34mm. Mikuni CV Carbs

Carb Float Valve (Needle & Seat) - Threaded Type. Fits: Stock Mikuni BS38 CV Carbs.

O-Ring - Needle Jet (Nozzle Main). If this O-ring is dried out, shrunk or damaged, fuel can pass around the outside of the Needle jet instead of just thru the jets center causing a richer carb fuel mixture. Fits: XS/TX 650's (1970-79) with Stock Mikuni BS38 CV Carbs. Note: O-Ring appears too small but it is correct, install by carefully stretching with pointy needle nose pliers until it just fits over the jet.

Throttle Butterfly Shaft Seal. Fits: Stock Mikuni BS34/BS38 CV Carbs on all 1970-84 650's

Choke Plunger Dust Seal - Fits: 1980-83 Yamaha XS650 BS34 CV Carburetor Choke Plunger

Choke Plunger Dust Seal - equivalent to OEM 306-14173-00-00: 1970-1979 XS650 BS38 CV Carb Choke Plunger. 1976-1977 XS360 1976-1977 XS500 1973-1974 TX750 1977 XS750 1981-1982 XJ550

38mm Carb Holder Set for stock Mikuni BS38CV carburetors. Same as used on 74-79 models. These are the type WITHOUT air barbs. Fits: All 1974-79 650's.OEM reference: 447-13555-01-00 LH, 447-13565-01-00 RH

Carb Rebuild Kit Kit Contains: 8 hole choke body Gasket, Float Bowl Gasket 256, Float Valve Assy. 2.0 with washer, Pilot Jet #27.5 VM22/210 type, #135 Small Round Main Jet N102/221, Pilot Air Mixture Screw with O-Ring and spring, Choke plunger and Washer for float bowl main jet access plug. Note: Slide Needle Not included but available separate. Made in Japan - 1 kit required per carb. Fits: XS650E/SE/F/SF/2F (1978-79) Note: Carb idle mixture screw O-Rings included may or may not fit correctly in your Mikuni BS38 CV stock carb. The O-Ring in the carb as originally supplied by Mikuni/Yamaha varies in fit and size and we have found it impossible to match or guarantee a proper fit. No alternatives can or will be supplied. The mixture screw and matching O-ring was never sold or supplied by Yamaha or Mikuni.

Stainless Steel Socket Head Screws for Carb Holders Set/4. Fits: Stock carb holders

Throttle Cable (Black), OEM# 2M0-26311-01, Made in Japan. Fits: XS650 "Specials" 1978-84 Length: 48"

Throttle Cable (Grey) Right side cable, OEM # 256-26311-01, Made in Japan. Fits: XS1/XS1B/XS2/TX650 (1970-73)

Throttle Cable (Grey) Left side, OEM # 256-26312-00, Made in Japan. Fits: XS1/XS1B/XS2/TX650 (1970-73)

Throttle Cable (Black) Right side, OEM# 447-26311-00, Made in Japan. Fits: TX650A (1974), XS650B (1975)

Throttle Cable (Black) Left side, OEM# 447-26312-00, Made in Japan. Fits: TX650A (1974), XS650B (1975)