Post by bigmac on Nov 9, 2015 20:32:13 GMT -5
While browsing the comment section of a video on Youtube, I saw a comment saying that the Japanese Philip screws are different and need special Philip screwdrivers to be worked on properly. Curious, I looked into it and learned that the Japanese had developed their own "JIS" (Japanese Industrial Standard) screws and screwdrivers. These screws are marked with small dimples on their heads, as shown below:
After looking these JIS Screwdrivers up on Amazon and seeing good reviews, I decided to order two of them, sizes P2 and P3.
As I waited for my new screwdrivers to come in from Japan, my Chinese scooter carburetor flooded. I never opened the float bowl on this carburetor before, but had stripped two screws on my original carburetor when opening the float bowl. Seeing that the screws on the carburetor are marked with dimples, I decided to wait and put the JIS screwdrivers to the test when they arrived.
Once the screwdrivers came, I had no problem opening the float bowl. Many people complain about soft metal screws on these Chinese scooter carburetors and the screws on mine were very tight, but I removed them all without damaging any of them. I was very satisfied with how well the screwdriver had preformed during that job.
Now here is what really impressed me about these screwdrivers. When I went to remove and clean the CVT air filter on my Yamaha Zuma, I noticed that some of the CVT cover screws were extremely over tightened. The JIS screwdrivers I bought are also impact screwdrivers, so after some good hits with a rubber mallet, I got the stuck screws out and without damaging the heads.
Once I got the CVT cover off, I just had to remove one last screw that holds the air filter in place. I tried turning it out by hand, no luck. I tried the impact feature, still won't move. I tried again but with some WD-40, still nothing was happening.
Now this screw is either coming out or getting stripped. I grabbed the screwdriver handle with both hands as tightly as I could and started turning, using wrist and upper body strength. Suddenly, I heard a crack sound and felt movement. The screw had come loose and without damage. This screw had been painted black, and not even a little bit of paint on the inside of the head had come off. The tip of the screwdriver was also totally fine.
I cannot recommend these screwdrivers enough. It seems impossible to strip a screw with them. They don't "cam-out" of the screw head even during the most extreme situations. I wish so bad I had known about these screwdrivers a long time ago. Perhaps many of you here already have heard of JIS screwdrivers, but in case not, I'd like to let you all know of them before more screws are stripped.
Links to the two JIS Screwdrivers that I purchased:
www.amazon.com/Vessel-Megadora-Impacta-P2x100-Screwdriver/dp/B003BI8HHQ/ref=sr_1_2?ie=UTF8&qid=1447116491&sr=8-2&keywords=vessel+impacta+screwdriver
www.amazon.com/Vessel-125943-P3x150-Impacta-Screwdriver/dp/B003BGTTSE/ref=sr_1_1?ie=UTF8&qid=1447116491&sr=8-1&keywords=vessel+impacta+screwdriver
After looking these JIS Screwdrivers up on Amazon and seeing good reviews, I decided to order two of them, sizes P2 and P3.
As I waited for my new screwdrivers to come in from Japan, my Chinese scooter carburetor flooded. I never opened the float bowl on this carburetor before, but had stripped two screws on my original carburetor when opening the float bowl. Seeing that the screws on the carburetor are marked with dimples, I decided to wait and put the JIS screwdrivers to the test when they arrived.
Once the screwdrivers came, I had no problem opening the float bowl. Many people complain about soft metal screws on these Chinese scooter carburetors and the screws on mine were very tight, but I removed them all without damaging any of them. I was very satisfied with how well the screwdriver had preformed during that job.
Now here is what really impressed me about these screwdrivers. When I went to remove and clean the CVT air filter on my Yamaha Zuma, I noticed that some of the CVT cover screws were extremely over tightened. The JIS screwdrivers I bought are also impact screwdrivers, so after some good hits with a rubber mallet, I got the stuck screws out and without damaging the heads.
Once I got the CVT cover off, I just had to remove one last screw that holds the air filter in place. I tried turning it out by hand, no luck. I tried the impact feature, still won't move. I tried again but with some WD-40, still nothing was happening.
Now this screw is either coming out or getting stripped. I grabbed the screwdriver handle with both hands as tightly as I could and started turning, using wrist and upper body strength. Suddenly, I heard a crack sound and felt movement. The screw had come loose and without damage. This screw had been painted black, and not even a little bit of paint on the inside of the head had come off. The tip of the screwdriver was also totally fine.
I cannot recommend these screwdrivers enough. It seems impossible to strip a screw with them. They don't "cam-out" of the screw head even during the most extreme situations. I wish so bad I had known about these screwdrivers a long time ago. Perhaps many of you here already have heard of JIS screwdrivers, but in case not, I'd like to let you all know of them before more screws are stripped.
Links to the two JIS Screwdrivers that I purchased:
www.amazon.com/Vessel-Megadora-Impacta-P2x100-Screwdriver/dp/B003BI8HHQ/ref=sr_1_2?ie=UTF8&qid=1447116491&sr=8-2&keywords=vessel+impacta+screwdriver
www.amazon.com/Vessel-125943-P3x150-Impacta-Screwdriver/dp/B003BGTTSE/ref=sr_1_1?ie=UTF8&qid=1447116491&sr=8-1&keywords=vessel+impacta+screwdriver
