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cam gear off by a tooth

Joined Apr 2005
48 Posts | 0+
Eugene, Oregon
Dear gentlebergs:

On my 03 FE400e, I had a problem with very rough slow idle and occasional starting problems. My mechanic had been doing a variety of things to try and install an auto clutch per my other posts and thought he would check the timing and rework the jets.

When he worked on what was believed to be a timing and/or carb adjustment problem, it was discovered that the cam gear was "one tooth ********" and, when reset to factory specs, which effectively advanced the cam from where it was, the bike now runs like a sewing machine at idle. The electric restart will fire it up on first try. Thus far I am aptly pleased, but was wondering if any of you had ever encountered this problem so I thought I would share my experience. :wink:


Syl


For God so loved the world....
 
SYL

yes i got confussed at the dots one day and it wasn't quite right.

to be honest? the cam chain can be that slack that over a period of two-three years the cam can fall back enough that to get the cam sitting right again you have to bring the cam forward a tooth.

THAT'S HOW BAD THE CAM CHAIN CAN BE!

regards

Taffy
 
Yes :x

My bike has no timing dots. When I had the engine rebuilt, the mechanic timed it a tooth off at the primary, which is 1/2 tooth off at the cam. It was next to impossible to start cold, but ran pretty good once warm.

Found and corrected the timing error and all was good!
 
Can someone please post some pics of what cam should look like in respect of the top of the head when timing it up.

I have just rebuilt mine 02 650 after a mains failure and it starts ok (8 kicks) from cold but will not restart when warm :(
 
it is described in the owners doc where the lobes shoiuld be. there is loads of advice there for you. it's hyperlinked at the base of my post below.

try it.

regards

Taffy
 
yup it happend to me on an 88 husky 510. i had to replace the cylinder due to corrosion and put the thing back together 1 tooth off. it ran fine but made a metallic noise. i couldn't figure it out for a while...i never rode it but i would start it and listen to try to figure out the problem. finially i just took it apart...exploratory surgery. it turned out the valves were hitting the piston ever so slightly. you could see the marks on the piston but they only scuffed off the carbon film that was atop the piston. there was literally no damage to the top of the piston...hence no damage to the valve train. i timed it right and all was fine.

out of all the bikes i've owned i regret selling that husky to this day. that was the coolist bike with the dual exhaust, way cool cast iron front brake, cool frame...and one of the last swedish huskys.
 

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