PIAGGIO MSS ZIP 100 4T Service Manual page 127

MSS ZIP 100 4T
Engine
loss of engine blows as the mixture is too lean (low CO), ignition failure or, incorrect timing or a clogged
or unsealed exhaust valve.
If it is difficult to adjust CO values, check accurately:
- That the automatic starter is efficient.
- That the tapered pin-housing is efficient
- Tank level adjustments
ENG - 127