【KOWA】Thickness Gauge Review

For the do-it-yourself maintenance group, this is a good one to have.

Restore of immovable ESTRELLA.
Final touches, Tappet adjustments.
Oil leak is gone but Engine noise is annoying.
However, I need to prepare Thickness Gauge for Tappet adjustment, so I bought this one.

[What happens if I don't make the Tappet adjustment?
Of course, if the tappet noise is too loud, it will bother you, but if you leave it as it is, the wider the gap, the stronger the impact of the blow, and the tappet clearance will widen more and more, which will cause the starting performance to deteriorate and the motorcycle to gradually go out of tune, so adjustments are necessary. 。

What is a mismatch in Tappet clearance?
When the Valve clearance (Tappet) gap becomes Large, a hammering sound begins to be heard. 。 Sound is emitted when Engine is cold, but disappears when warmed up. 。 In such a case, the gap is large, but as it warms up, the gold expands and the gap becomes small, and the sound disappears.

Symptoms
When I stopped at a traffic light, the car stalled while holding the clutch and dropping the GEAR.
In accordance with the Fat Engine Rotation "Tinkle, tinkle, tinkle." and strange noise.


Procedure 〜For ~ESTRELLA
(1) Unload the Tank from the vehicle body.
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(2) Cook must be Off 。 By turning it Off, you can lower the hose without wasting Gasoline dripping out (some Gasoline in the hose will come out immediately after the hose is removed).
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(3) ESTRELLA can be adjusted to the upper dead center by removing the Cover and turning this Screw. 。 Top dead center is simply the state where the Piston is at the top.
When adjusting the tappet, the position of the piston must be adjusted to the upper dead center. 。
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(4) Remove the Plug so that no compression is applied.
I have to move it with no Engine on it.
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5) Front Tappet Cover. 。 It can be adjusted by removing here.
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(6) Loosen the lock nut attached to the head first, and when the center screw can be turned, it is OK. 。
At this point, it is normal to move the Tappet by hand and hear a chica-chica sound. 。 If it does not sound kachica-chi, either the upper dead center is not correct or the adjustment is gapped considerably.
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(7) Insert the Thickness Gauge into the gap and align it. 。 Strictly speaking, this is the process of adjusting the gap between the Valve and the Arm that is pushing the Valve to the proper value.
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Clearance on the exhaust side is 0.17 to 0.22mm 。 If the Gauge is pinched by inserting 0.20mm of Thickness Gauge and closing the Screw at the Center, the Gauge will be pinched, and if the Gauge is moved in that state and it feels a little stuck, it is OK. 。
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Clearance on the intake side is 0.10 to 0.15mm 。 The intake side may be a little more difficult to do because it is more intricate in location.
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(10) To be sure, make one more rotation of the screw with the upper dead center aligned, and then align it again.

[After adjustment
When I drove it, it no longer stalled and blew up better!

I think a single cylinder can be done by an amateur. View detail

A must for Valve clearance

I purchased this for Valve clearance adjustment.
The part requiring Thickness Gauge is essential because it is not possible to measure it with other measuring tools such as Caliperetc.

Kowa Seiki is a company that I had not heard much about, but it is a very long-established tool manufacturer established in 1952, and it seems to be a company that manufactures not hand tools that we ordinary users use, but special tools and equipment that motorcycle and automobile factories install as equipment. It seems to be a company that manufactures not hand tools for us ordinary users, but special tools and equipment that are installed as equipment in motorcycle and automobile factories.

Unlike Dial gauge and Micro meter, Thickness Gauge does not deviate so much.
However, if rusting occurs, the thickness can easily change with rust, so only that point should be noted.
Since it is not a tool that is used so routinely, it is better to store it in Vinyl after use with a rust inhibitor, or if not available, a lubricant smeared all over it.
It has been about 10 years since I purchased it and it still remains rust-free. View detail

For Tappet adjustment.

The price and comfort are good. It is easy to rust, so it is good to apply Oil when storing. View detail

This is a good product that is inexpensive and easy to find.

[How is it used?
To the Deer Baron. "The old Motorcycles are getting pretty crazy with Valve Clearance. I was ad-vise and bought it in a hurry.
It used to be a regular item at the nearby Home center car parts corner...

Was the one you received as per Image?
Simple & Compact, as per Image.

How was your experience with it?
It's nothing to write about, it's just a normal chic Snes Gauge, because the purpose of using this tool is clear. "It's so easy to use." And "It's so hard to use. I don't think you can make a product that says

[Points to note]
If you handle it roughly, the Plate will be bent and it will be difficult to use the same Plate next time.
Well, if it gets bent and hard to use, you can just buy a new one...

How did it compare to other products?
Since the purpose of use is clear and limited, there is little difference from other companies' products.

Other items that would be helpful
[ITEMS TO BUY TOGETHER
I think that the person who needs this tool is already able to do some maintenance, and I don't think that it is necessary to buy it.

[Opinions and requests to Manufacturer
I hope you will continue to sell it at an affordable price. View detail

I think it's good

I haven't used it yet, but it seems to work fine. View detail