05-27-2017 03:50 PM
Some more details are needed, first off the complete serial number, next what is the rating of your machine. What kind of fuel, what are your ambient conditions, is this a new or older machine. Did this problem just occuring, when? How many hours on machine, how many hours since last major service or repair.
Better descriptions will get you better answers.
06-03-2017 10:09 PM
So you have engines that were delivered in 2009, now with 8000 hours, and no service work has been done? How about valve and bridge adjustment or spark plug change?
What is the rating of your machine?
06-04-2017 11:32 PM