Topic: CB650 Cam Chain tensioner

[1979CB650_Chris]

Hey all,

I need to tighten the cam chain and i found out that the cam chain has an automatic way of doing it!  I guess Im supposed to lossen the cam chain tension bolt and then turn the crankshaft clockwise.  Can I do this by just clicking the engine over (with the starter) or how else should I do it?  Thanks Chris

[bryanj]

NOT with the starter, take either end cover off and use a spanner on the bolt uncovered to turn the engine clockwise and whilst holding tension on the crank do up the adjuster

[byidesign]

The way i do it on my 650 is remove the right side timing cover on the crankshaft, remove the plugs, you will need a large @7/8 socket and bar to fit the timing assy,nut.
  {you can do this with plugs in but it is harder to fight compression}.
  bike should be cold.  
       loosen the 8mm tension nut {between carb 2and 3} on back of cyl. head @ 2 turns ...then
    slowly turn the engine crankshaft,CLOCKWISE {do NOT turn backwards} 3 revolutions, on the
      4th revolution slowly retighten the 8mm tension nut. it IS small do not overtighten.
        replace the timing cover.
              A good Clymer, or haynes manual has all of this + pics. and is a good investment.
         enjoy the bike....

[scott_cb650]

              A good Clymer, or haynes manual has all of this + pics. and is a good investment.
         enjoy the bike....

I don't want to be rude, but the above is true.
I bought one of the cheap orange ones for my CB650 and have referenced it many times.

Scott