Well the muffler is not original and does not belong to this model. The muffler looks like a MS 880 or 881. If you have 1994 on the sticker, it can`t be a 088, because the 088 came in 1996. So it is likely a 084 with a new muffler that does not belong to this model.
But from the shroud with the carb adjusting holes it looks like 088. Weird, can`t say for sure.
What`s the serial number?