Sawmill Maintenance/Repairs

[TimW]

Some days the Yanmar acts up.  Mostly warmer days.  We had a rain cooled 77 degree day two weeks ago with no problems.  The next two days, the Yanmar would want to run around 2600 rpm.  Not full power, but it would saw pine.  The zing is really louder at 2600 rpm.  Back in Feb. it ran fine in 33 and 40 degree weather.  But warn days it acts up.

  I checked for codes and found 7 codes.  No warning light on the screen.  Took it to Onalaska, Texas to LoneStar Outdoor Power Equip.  Nice country drive without having to drive into Houston traffic.  I gotta wait 2 weeks until they get to it.  But I have a better feeling here, as they are a Yanmar tractor and excavator dealer, with renting, sales and service.

[doc henderson]

good luck Tim.

[Stephen1]

Sooner or later you will find that mechanic that knows. good luck!

[TimW]

I have been vindicated!  Fuel problems, bah humbug.  I always stated it (in my gut) was a heat related electrical issue.  Yanmar dealer in Onalaska, Texas found the problem.  I picked it up today, after leaving it there two weeks ago.  He did replace the lift pump, but the engine was still hunting rpm.  He left the engine and started troulbleshooting the Woodmizer side of the auto clutch and electrical circuit that puts the Yanmar into high idle.  He found bad wires in the throttle control valve circuit.  That is near (under the up/down panel) the huge bundle running from the simple set.
 I haven't put it under load yet, but just low idle and high idle sound way stronger. 

So Y'all that bad mouthed Tier IV Yanmars, shame on Y'all.   

[SawyerTed]

Hope you're on to sawing worry free for a long long time !  

[Magicman]

I know that crossing fingers does absolutely nothing, but let's cross um anyway.  

[TimW]

Lynn,
       All my fingers are crossed.  Even my legs are crossed and my arms.   But I won't jinx it by crossing my eyes.

[barbender]

Well, my eyes are crossed natural so let's add those

[TimW]

But I'm not gonna say misery loves company.

[Stephen1]

A sign of a good mechanic, went outside the box the find the issue. Not a lot of them around, troubleshooting mechanics or techs as they are called now. 

[jpassardi]

Yes, finger xing for you also - chasing intermittent issues is the worst.