Question about McCulloch Garden
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Posted on Jan 02, 2017
after jerkin fingers bloody today same problem i took carb apart,,the old hoses deteorated an clogged screen on in take side/// inside of carb plate //of carb,,blew out with choke cleaner,, reassembled now runs well make sure to run same size hoses large an small,,as original other wise floods out,,,
Posted on Mar 21, 2009
It takes good gas, good spark, and good air for a gasoline engine to run well. The next thing I would do is put a new air filter in it.
Posted on Apr 23, 2009
this could one or a combination of a few things
1 check inside the tank for dirt 2check that the filter screen inside the tank is not plugged3 make sure the gas feed tube is not restricted pinched in the case or kinked also you can try a simple carb adjustment.also check to make sure the plug is gapped to the right specs good luck and i hope one of these suggestions do the trick
Posted on May 02, 2009
SOURCE: Ryobi 700r 31cc 15" Trimmer
Just break off plastic caps to access the low and high speed jets. They are there because of government regulations to prevent users from adjusting carb in the field. They serve no other purpose.
Supply line with filter is suppose to be one piece from the tank to the carb. If it has a barb coupling in the middle then someone must have tried to patch the line at some point. You can get a replacement line and filter as part #682039 by searching online or ebay. Or you can just order line and reuse filter if it is not plugged. Required line is 3/32 ID x 3/16" OD. Both dimensions are critical. To replace line you have to take retaining ring off the bottom of the fitting on the tank (use a knife or scraper to pry it off the bulge in the hose) and push the filter fitting into the tank. Remove from tank through the fill opening. Remove piece of hose that is still on the barb. Push on new section of hose all the way to the top of the barb and right up to the filter. Put other end of hose through tank fill opening and through hole in bottom of tank. Use a piece of wire or a straightened paper clip to guide it to the hole. Pull hose through until the bulge gets to the opening. Pull hose firmly, but carefully so the hose stretches enough to allow the bulge to go into the hole in the bottom of the tank. Stop when the bottom edge of the filter is about 1/8" from the inside bottom of the tank. You should see enough of the barb end sticking through the tank for the retaining ring to be replaced on the outside bottom of the tank. If not enough exposed, pull hose through a little more. Thread line to carb input and insert. Inlet fitting will have barbs or a bulge on it. The return fitting on the carb is a straight tube with no barbs. The line from that fitting (3/32 x 3/16 also, as all lines are) goes to the top (suction side) of the primer. The other side of the primer has a line that returns to the other opening in the tank.
The return to the tank must have a fitting similar to the filter fitting, but without the filter. It is a barbed fitting with a flange ring on the end that is inside the tank and it has the retaining ring on the outside just line the supply side line. It sounds like you are missing that fitting, because you are describing the hose just being pushed up into the tank. Without that barbed fitting in place the tank will leak gas. The bulge in the line caused by the line fitting over the barbs is what seals the opening. You can order a return line kit 147290 from MTD parts that will have the line, the barb fitting and the retainer ring. In a pinch you could get use an 1/8" hose barb from a hardware store and just arefully pull it through the opening so that the bulge in the barb/hose combination is sealing the tank both inside and out. You can get by without the retaining ring. Otherwise look for a junk IDC/Ryan/Ryobi trimmer to scavange parts off of.
Sounds like you may still have a carb problem to deal with. Did you remove the needle valve to make sure it is not stuck or inlet plugged or restricted? Fuel screen clean? May need a diaphragm and gasket set. Good luck.
Posted on May 23, 2009
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