Cell# 512-718-9570

118 Mount Pleasant Ave. Smithville, TX 78957

Bad crank seal = Melt down on left cylinder

Check List

              Right click on underlined words -"open in new window"

Check list -RD350 /400 "Been Sitting"

  1) Fuel system clean- tank rusty?Phosphoric acid treatment.             

   Cross over tube clean -pipe cleaners

   Petcock clean replace gasket @ fuel selector

   New fuel linesandfilters

   2) Carburetor clean

   Clean all passageways compressed air, Pilot, choke, nozzle, air, fuel

   Inspect needle and seats -if visible x5 eye loop wear mark replace

   Remove air screw, clean with steel wool tip

   Remove needle Jet  [Nozzle] clean all debris off shaft, clear holes, hone cavity.

   Set float height as manual stated RD350 = 15mm +/- 1mm RD400 = 23mm +/- 1mm

   Remove Jet Needle from slides -clean with steel wool -note type and clip position

   Clean pilot jet -guitar wire to clean all holes -shoot with air

   3) Compression - test both cylinders [dry] must be a minimum of 100psi both sides

  Both sides should be within 5% of each other.

  4) Timing- NOTE: Battery must have at least 11 VDC

    Inspect points -pitted (R&R) replace or repair file down if in limits

      Set gap to 0.012" - 0.016" [0.014']

       Using a dial indicator [metric preferred] set timing to 2.0mmBTDC

                                If motor work and pipes, big carbs 1.8mmBTDC -Retarded

5) Install new plugs as recommended R5-RD350 B8hs, RD400 B8es

         gap to 0.022" - 0.026"

6) Start that mother up!!!!

      If all was done correctly 1-2 kick should bring it to life.

7) If Right pipe [sitting on bike] smokes more than left crank seals will need to be replaced  

    For GOD sake this is a 35-39 year old bike rubber parts wear out due to many years of    exposure.

 If seals need to be replaced Jetting will be a bitch -left side FAT jetting right side LEAN jetting. If  the labyrinth seal is weak both sides will smoke.

8) Noise in the engine - Slappy pistons will make noise- Ride the Bitch.

    When you are riding and it slows down and will not start. Wait for 10 minutes then start and go home you have just experienced a seizure. Medication for this is a new top end! YEY!!

Off you and your wallet go, new tires, chain and sprockets, brake rebuilds, rubber parts, new odds and ends. YourWifehas to love you a lot or the bike for this to work... Once you ride a well tuned RD you will find it is not the fastest bike out there. But is sure is fun, power band is an addicting thing on these bikes



                    Have fun


                RD's Only    

 Shop Phone: 512-575-7018

RD's Only