KM100 Problems

[GardenKit]

Hi thanks to both of you. I have fitted new piston and rings. I looked at the barrel and there are no marks at all that's why I can't understand it as it was running fine. Gardenkit is the decompression thing behind the cam wheel? Thanks for all your help

Hi gardenmad,

the decomp lever projects from the cam lobe by about 2mm, if you push it down in an anti-clockwise direction it should retract fully, if not replace the cam gear.

[gardenmad]

Hi Gardenkit cam checked and all moves freely. One thing I did notice on the flywheel there is an arrow and on the plastic cam wheel there are two arrows. On a rebuild are these meant to be in a particular position when you put push rods in and do valve clearance? Sorry for being a pain and thanks for the help.

[GardenKit]

Hi Gardenkit cam checked and all moves freely. One thing I did notice on the flywheel there is an arrow and on the plastic cam wheel there are two arrows. On a rebuild are these meant to be in a particular position when you put push rods in and do valve clearance? Sorry for being a pain and thanks for the help.

Hi Gardenmad. This may be difficult to explain in writing, but I,ll have a go.

 

for normal valve adjustment you line up the little arrow on the flywheel with the RH ignition module bolt. As its a 4 stroke this will occur in 2 positions, if the valves are operated by the rocker arms in this position (valve overlap) rotate the crank another turn and the valves should be idle i.e not operated when rocking the crank back and forth. Clearance is 0.1mm (+ or- .02mm) adjust, and rotate 2 turns, check again.

You will need to cut your feeler to fit between the flanges of the rocker arm.

 

Before doing this, if the cam gear has been disturbed, check the timing of the cam gear with the lobe pointing down.

 

Set crank to TDC, line up the two arrows with the two little marks in the crankcase. (horizontally opposed below centre line of crank)

then fit the followers with left hand (inlet) follower first.

 

these marks, and the flywheel arrow should all line up at the same time.

 

Hope this makes some sense.

[gardenmad]

THANKS Gardenkit all done and up and running ......at last

[GardenKit]

THANKS Gardenkit all done and up and running ......at last

No probs:thumbup: