Changing frost plugs in changfa ZS1115 head
The Zs 1115 has 3 frost plugs in the head two outside crank case and
1 inside
You have to remove the valve cover to find the third one, if this one pops water will enter the crankcase
This plug is a 31/32 which is not available in the US so we will use 1 inch .
But it has to be modified to fit into the hole . The new frost plug looks like this
If you just pound the new one in it will look like this
But if you take a file and remove the skirt down to about 1/8 of an inch or less
Then pound it in the hole
Then take your file and level up the plug and with the head as the rocker arm partly cover the plug