Lay down, after ingesting 3-4 fingers of your favorite hard liquor, and the feeling hopefully will pass.
More than a few gallons of hard liquor have passed down the chute since I last worked on that saw. Only time has dulled that anger. However, it is indeed time to delve into the good stuff. I'm sittin' here reeking of stale gasoline (despite scrubbin and scrubbin). The better half won't let me near her tonite anyways...
It's time for a shot anyway.
Yes it is. Three fingers plus of my favorite brown whiskey is chillin on ice in front of me as I type. Mmmmmmmmm.....that was good!
Hey Randy...........My 790 lives!!! While taking a break from cursing the long deceased engineers who designed that 77, I decided to see if the 790 would speak. Flushed the foul syrup out of the bottom of the tank, refilled with fresh mix, spritzed a bit down the chute, then gave 'er a pull. Fired right off on the prime then shut down. Repeated a couple more times, and it ran on its own!
Had a bit of a scramble though. Seems that some former owner tinkered with the throttle linkage and the governor bits. Once the HL started drawing fuel on its own, the saw tried to rev towards destruction. Pushed the choke and fogged the 'skeeters to slow it down until I could get my finger on the throttle arm and bring it back to sanity. Revs and idles fine. Great sound. Even Rachel (the little one) likes it. Says the 77 is too loud though...
Pulled the fan shoud off (was held on with one screw) and discovered that somebody took a pair of dykes and cut the governor arm off! I thought the throttle linkage didn't feel "right" compared to your 790. It seemed to function fine however. Once she started, the linkage just rattled all apart. The trigger return spring seems to have died too.
Looks like that saw originaly had a flatback (the 'spit catcher' pad thingee is there, even though the HL19E tilly doesn't have a nipple for the line) and somebody swapped in a tilly from an older governor equipped mac. When they did the swap they did something wrong with the linkage. Gonna swap over the throttle arm, link, and trigger spring from your 200 to make things right.
That McCulloch 77 is amazing. You have to disassemble and remove the tank assembly just to get near the carb 'system'. It has the fuel pump section of the carb system within the tank. It pumps the fuel through about a
FOOT of passages (over, down, and around) to the metering section of the carb system (which is over four inches below the pump section). Fuel is then fed back up from the metering section to the high and low speed venturies in the 'throttle gate' section of the carb. That section is part of the extremely intricate crankcase/chassis/handle casting.
The idle mixture needle is within the metering section. The main mixture needle is about four inches long, threads into the throttle gate/venturi section, has an 'arrowhead' shaped point (actualy it's rather 'male'), and is adjustable on the fly by a complex multi-piece spring loaded lever with your thumb. Crazy stuff. And I thought
I was eccentric. R.P. McCulloch has me beat by a country mile!
Finaly got it all apart (well I still have to take apart the handle/throttle gate/venturi stuff) and the diaphragms are now soaking in the lemon juice/hot water bath. All kinds of foul-smelling stuff is floating to the surface. Hope the diaphragms are salvageable. Doubt there's any NOS pieces left. The pump diaphragm looks pretty good already. The metering diaphragm is extremely dried out and 'crackles' like a dead leaf...:bang:
I'll swap that bar over to your 790 and see if it will speak soon. It looks and smells better than mine did/does, so hopefuly it will roar to life.
Time for another sip...
