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OS 120 Surpass Ver. 1 valve clearance

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Old 01-30-2013, 08:09 PM
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Capt. Bill
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Default OS 120 Surpass Ver. 1 valve clearance

I have an old OS Version 1 120 Surpass that I have started running finally the last three years. Ran great until a pushrod bent so now I am going to replace those and check the valve clearance. The manual says between .04 and .10 mm for valve clearance. Is better to be closer to .04 or .10?
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Old 01-31-2013, 06:59 AM
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Bax
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Default RE: OS 120 Surpass Ver. 1 valve clearance

Anything in that range is correct. The two feeler gauges in the tool kit OS has available are "go/no-go" sizes. One fits the other doesn't, and that's all that's needed.

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Old 01-31-2013, 06:28 PM
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Default RE: OS 120 Surpass Ver. 1 valve clearance

I have seen people take a folded-over piece of a cigarette wrapper and use that as a 'feeler guage'. I've done it myself, and had good results. I never did measure it though. But I believe that it would be within range.

Just my $.02

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