Viper 150cc Valve adjustment

sams2017 · 07-17-2018, 05:15 PM

I did the valve adjustment and the manual said Intake: 0.02 - 0.03 and Exhaust: 0.03 - 0.05 I gaped the Intake 0.03 and Exhaust at 0.05

Some person told me I was wrong and should have put the gap at 0.02 and 0.04

Did I do it wrong anyone?

Also, as I put on miles does the gap get bigger or smaller. I said smaller and was told WRONG! it gets bigger.

The bike is a 1 kick start and runs great.

Weldangrind · 07-18-2018, 10:56 AM

In general terms, the gap gets smaller over time. That's not a rule, but it is typical. As the valve wears into the seat, it pushes the valve stem closer to the rocker tip, thereby making the gap smaller.

sams2017 · 07-19-2018, 05:30 PM

Quote:

Originally Posted by Weldangrind

In general terms, the gap gets smaller over time. That's not a rule, but it is typical. As the valve wears into the seat, it pushes the valve stem closer to the rocker tip, thereby making the gap smaller.

Thank you for the info Weldangrind

07-17-2018, 05:15 PM	#1
sams2017 Join Date: Jun 2017 Posts: 18	Viper 150cc Valve adjustment I did the valve adjustment and the manual said Intake: 0.02 - 0.03 and Exhaust: 0.03 - 0.05 I gaped the Intake 0.03 and Exhaust at 0.05 Some person told me I was wrong and should have put the gap at 0.02 and 0.04 Did I do it wrong anyone? Also, as I put on miles does the gap get bigger or smaller. I said smaller and was told WRONG! it gets bigger. The bike is a 1 kick start and runs great.
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07-18-2018, 10:56 AM	#2
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	In general terms, the gap gets smaller over time. That's not a rule, but it is typical. As the valve wears into the seat, it pushes the valve stem closer to the rocker tip, thereby making the gap smaller. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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