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Old 10-01-2008 | 05:44 AM
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DarZeelon
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From: Rosh-HaAyin, ISRAEL
Default RE: thunder tiger .91 4 stroke issues


ORIGINAL: chashint

Apparently the instructions in the manual were adequate, he adjusted the valves and is very satisified with the engine's performance.
While I understand that some people are not satisfied with "good enough" I have not had any issues with the go / no-go method. In fact I am a huge believer in "if it ain't broke don't fix it" so I never even check the valves unless one of the engines starts to run poorly. At that time I will work on it, otherwise it is fly em and oil them if they are going to sit for a while. All of my engines run great and I hardly ever have to fiddle with one of them so I am a happy camper.
Charlie,


I have seen cases, with several engine makes; even full-size, where a cam's base-circle was not concentric with the camshaft...

Since my method, in a single-cylinder, four-stroke glow engine, would barely take a couple of seconds longer, to achieve results you can be more sure of, I find it is worth the trouble.


And as to performing valve adjustments, or for that matter, checking the valve-lash; I do it only when necessary, not just for the fun...

I have no argument with you, but I think the manual should tell you the better procedure; not the 'easier' one...