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Instructions re.Carb.adj. for MONDO Weed-eater

The operators Manual I have states for basic carb.settings states
""Turn Low & High speed mixture screws to the midpoint between the limiter cap stops"" The carb.on the machine does not show LIMITER CAP STOPS and I would think is adjusted as usual by backing screwws off from closed positions. I would like to know what the basic adjustment is>
Machine I/D numbers appear to be 98071N.400185-1

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Posted on Jan 02, 2017

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SOURCE: ryobi 31cc lawn trimmer carb adjustment

As with all 2 strokes if you have compression and a reasonable spark, you only need fresh fuel with correct oil ratio) and they must go !(as long as you haven't fiddled first and all gaskets are sealing) I start mine by(1) pumping the primer till it is firm,(2) full choke,(3) pull till it kicks ONCE,(4) half choke, pull till it runs,allow to warm up and(5) switch to run (you may need to apply a bit of throttle while pulling as in (4)(or give it a few more pumps if it dies) If all is ok, check that when properly warmed up there is a smooth transition from idle to full revs, if it hesitates it may need the LOW SPEED mixture leaning (clockwise) SLIGHTLY.If it dies the LOW SPEED mixture may need richening(anti-clockwise)(adjust 1/8 turn at a time) Make sure that motor is just peaking at full revs and is on the RICH side of peaking (HIGH SPEED mixture)(this will avoid seizing it Adjust both till it revs cleanly and is JUST rich at full, and idleing nicely and it should start without too much trouble.(If you have fiddled and are lost,-about 2 1/2 turns out from closed on both needles should get you started)

Posted on Nov 24, 2008

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SOURCE: Snapper SS312 weed eater. Cranks when primed but won't run

I am sorry to say this, but the compression for that type of engine should be atleast 120 psi. Remove the muffler and look at the cylinder, it is scarred beyond repair.

Posted on Apr 22, 2009

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SOURCE: My weed eater will not start. I have rebuilt the

one is idle setting till carby you will see letters L and H next to screws both thes screws are usually set all way in not tight!!! then back them out one full turn each ....that is starting position

Posted on Aug 14, 2010

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SOURCE: How do you adjust the high speed mixture screw? I

Hi montex124, I will try to help. In the past few years carb makers have been making changes. Some carbs have no adjustment at all, the ports are all fixed inside the carb. Other carbs have only the idle speed mixture screw that can be adjusted, like yours seems to have. Is this screw you mention at the top and completely outside of the carb to adjust the throttle? If it is it's probably the idle speed screw which can be adjusted to any idle speed you want and has nothing to do with the air fuel mixture but If it is right next to the idle mixture screw, it might be the high speed mixture screw but is capped so it can't be adjusted. The low and high speed mixture screws should be marked next to each screw H and L.
The 1 1/2 turns suggested is sometimes just right but other times has to be adjusted, so you can try adjusting it to get your idle but maybe adjust the idle speed screw first to get a higher RPM so it doesn't stall on you. Like I said earlier it just adjusts the throttle, and is like when you are using it, and giving it gas as they say. I hope this helps just a bit. Regards and good luck. Get back to me if you need more help or just let me know how you did. Denis.

Posted on Feb 28, 2011

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