Remove everything in front of the timing cover. Loosen the oil pan. Remove the timing cover. Replace the chain and gears by lining up the dots on the old gears and installing the new gears with the same alignment. Clean everything real good and put it all back together.
The timing should be 8 degrees
timing is adjusted by the ignition module and feed back from sensors
there is no timing belt it has a timing chain
Chain
There is no timing belt in that engine. It has a timing chain.
A CR 125 does not have a timing chain. It is a two stroke which operates with reed valves.
Your timing chain may be worn to the point it is jumping a tooth and thus changing the timing. If you can hear the chain that is a good sign it is worn. I would inspect the timing chain.
When changing the timing chain on a 1986 Dodge Aries 2.2L a diagram comes in handy. A diagram for this can be found in the cars maintenance manual.
When there is a problem in a vehicle, a diagram can help pinpoint some of the problems. A 1986 Windsor Bronco has a timing chain diagram in its maintenance manual.
2.5L 4 cylinder engines have a gears only, no chain. 2.8L V6 engines have a timing chain st
Sunburst?
It has a belt, not a chain...also has a balance shaft belt