front sprocket change

[z-lover]

Hey all! Thinking about changing the front sprocket and have some questions. is it gorilla tight? What size socket is needed? Problem with the clutch assist? Anything unforeseen that could catch me out? Thanks in advance for your replies!   

[Traph]

check out this thread https://www.zh2forum.com/index.php/topic,1006.0.html

[ratman111]

Hello,
I loosen the front sprocket like this: engage 1st gear, apply rear brake then loosen front sprocket or 1. Gear and put a hardwood between chain and rear sprocket, when tightening the same.
The front sprocket has a locking plate that you have to flatten with a screwdriver or similar, normally you can use it again because it is only folded 1 or 2 times. The front sprocket has a tightening torque of 145 NM!!! (So not from bad parents!) The key size I do not know but probably between 27-32 mm. For information, 1 tooth in the front corresponds to about 2-3 teeth in the rear, but I think you know that yourself!  Greetings from Germany

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[JimmyRecard]

So I have brought a 19T front sprocket from Brocks and I attempted to replace it last weekend, couldn't manage to remove the nut as the only thing I could put across the the swingarm to stop the wheel turning was a broom handle that didn't last too long. 

Before I try this again, I'm going to ask what may seem like a stupid question.  Is the sprocket nut, normal or reverse thread? 

[Traph]

Originally Posted by JimmyRecard

So I have brought a 19T front sprocket from Brocks and I attempted to replace it last weekend, couldn't manage to remove the nut as the only thing I could put across the the swingarm to stop the wheel turning was a broom handle that didn't last too long. 

Before I try this again, I'm going to ask what may seem like a stupid question.  Is the sprocket nut, normal or reverse thread?

Normal thread mate but you will need the biggest piece of timbet you can lock rear with...good luck

[nelsonRzh2]

I bought an electric impact gun it worked great. To tighten I got a metal pipe rapped it with rags/tape and put it across the swing-arm/wheel. Torque it. It worked great!!

[xarmy9]

I changed mine and found it to be easy. To remove it I had my girlfriend stand on the rear brake and I used a milwaukee 1/2” impact wrench. It came off in literally half a second. To tighten I again had her stand on the rear brake and I used a 1/2” drive automotive torque wrench to tighten it to spec. So I guess the key to making this easier is to have someone help.