G
Greenerpastures
Guest
Tried out my TTO tach today.
Have an issue, sometimes it looses the plot
and gives strange reading, goblty goop.
Other than his, I tuned the 7900 to 12240,
I noted that no matter how much leaner I made her
she never moved from 12240.
She Picked up well and so I tried to lean her out a little more, because I thought something was up as leaning did not produce any further rpm, but at 12300 the strange figures started coming, and the four stroking came too.
I thought this through, and started to tuned her rich again, and the Tach cam back to normal untill I hit the 12300 again.
Good job I was using the Tach, I put her back to
12oo0 now and she four strokes plenty, does not
heat or put any oil out the front, plug is good too.
The coil limiting was causing her to fourstroke
and when it was doing so it threw the Tach into
disarray.
The engines own fourstroking sound is distinct,
it rumbles unmistakeably, however the noise of the limited coil is a good bit louder when it was allowed to interup things. I was trying to get rid of it and could not, only for the Tack I could have entered the danger zone.
When I got the saw running good, I put in the spark screen,
and it made absolutely no difference to how the saw ran,
the RPM never altered, and I ran her plenty to make sure,
I noted no extra heat either, so far so good.
And am using 40:1 Jonsered Fully Synthetic oil I have this past two years.
After a few gallons, I will switch her over to Mobil 1 2T Racing and see if there is
a difference, its the only way I will ever know, Its the saw I use the least, so I don't
mind testing with her.
Have an issue, sometimes it looses the plot
and gives strange reading, goblty goop.
Other than his, I tuned the 7900 to 12240,
I noted that no matter how much leaner I made her
she never moved from 12240.
She Picked up well and so I tried to lean her out a little more, because I thought something was up as leaning did not produce any further rpm, but at 12300 the strange figures started coming, and the four stroking came too.
I thought this through, and started to tuned her rich again, and the Tach cam back to normal untill I hit the 12300 again.
Good job I was using the Tach, I put her back to
12oo0 now and she four strokes plenty, does not
heat or put any oil out the front, plug is good too.
The coil limiting was causing her to fourstroke
and when it was doing so it threw the Tach into
disarray.
The engines own fourstroking sound is distinct,
it rumbles unmistakeably, however the noise of the limited coil is a good bit louder when it was allowed to interup things. I was trying to get rid of it and could not, only for the Tack I could have entered the danger zone.
When I got the saw running good, I put in the spark screen,
and it made absolutely no difference to how the saw ran,
the RPM never altered, and I ran her plenty to make sure,
I noted no extra heat either, so far so good.
And am using 40:1 Jonsered Fully Synthetic oil I have this past two years.
After a few gallons, I will switch her over to Mobil 1 2T Racing and see if there is
a difference, its the only way I will ever know, Its the saw I use the least, so I don't
mind testing with her.
Last edited by a moderator: