Question about Measuring Tools & Sensors
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Posted on Jan 02, 2017
SOURCE: Cuts out after 10 minutes
Sounds like fuel tank vent problem , air has to get into tank
sometimes its vented by fuel cap but a lot of hedge trimmers use
a duck bill valve right thru tank or hooked to hose .
To test if this might be the problem loosen gas cap when it starts to die .
Posted on Feb 14, 2009
Had same problem with my reconditioned unit. After a few hours engine would run only with 1/2 choke and full throttle. Like most 2 cycle engines, the unit was starving for gas.
Solution: Adjust both carburetor screws. These screws are located directly below the idle adjustment screw. There are 2 of them side-by-side and they are approx. 3/16 diameter with an oval shaped cast metal raised restricter. Simply remove the plastic round air filter by removing the small nut. Then, using a Dremel tool while wearing safety glasses, cut a slot in the face of each screw. Cutting through the raised cast metal surrounding the screws will not damage the unit. Then using a small flat blade screwdriver, screw each screw clockwise till it stops then back-out each screw 2 turns. Factory setting is 1 - 1/2 turn each. However, the unit over time runs too lean with the factory setting.
Then start unit, let warm up with 1/2 choke, then turn to run position and make any final adjustments.
Making this adjustment, I am once agin able to trim my yard in the idle position. Runs Great !!!! Hope this helps.
Posted on Nov 12, 2009
need to adjust the high sscrew. i do mine in 1/4 turns. start machine, full throttle, adjust the h(high) til it clears up.i would start by turning 1/4 counterclock wise, just remember to keep track, in case it runs worse, the put it back to orig. then try the other way. but i suggest 1/4 turn at a time
example... think of a clock when turning screw. straight up and down, 12oc, 1/4 turn will be 3oc, another 1/4 will be 6oc, and so on. hope it helps!
Posted on Sep 22, 2010
SOURCE: Model 350777 Type 1137-E1
A lean mixture can cause hunting. Locate the mixture screw on the carburettor (there are two other scrws here but these act as stops to adjust the high and idle sppeds of the engine) and after the engine warms up, try turning it a quarter of a turn anti-clockwise and see what the effect is.
Have a look at this link:
Posted on May 08, 2011
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