Question about Stihl Ts 700 Cut Off Saw Model Name Plate Tag

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Running bad with oil leaking out the muffler crimps. Too much oil in the mix? Cleaned the air filters already and checked the spark plug. Looks good, maybe the carb?

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  • pat
    pat Oct 24, 2010

    what color is the plug I think it could need rings also

  • Kiltnar Mar 30, 2011

    Are the air filters wet with fuel mix? Is it not running high enough rpms? Answering these questions will help to get you the right information about your unit. Thank you.

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  • 111 Answers

Check the spark arrestor screen and see if the screen has carbon deposits on it. If it does then you need to clean the spark arrestor screen and re install it in the muffler. You can clean it by burning off the carbon. The air filters on the TS 700 Cut Off Saw do not need to be cleaned, they only need to be replaced when the unit starts running poorly. The carburetor could have something in it that is keeping the needle from closing and flooding out the unit. I would suggest taking this unit to a Stihl dealer that has a Gold Certified Technician. You can use the dealer locator on the the Stihl USA website. I have included a link HERE. You can type in your zip code and it will tell you where the closest dealer is and what level of technician they have.

Posted on Mar 31, 2011

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22' snapper walk behind mowewont start .cleaned spark plug and still wont start .swapped spark plugs from another mower that does work and the other mower starts with the snapper mower's spark plug .


You need several things for a running internal combustion engine:
  • Air
  • Spark (to start)
  • Fuel
  • Compression
  • Lubrication
  • Exhaust.
You've shown that you have a workable spark plug so far. Going from the above, consider as well
  • Fuel. Bad / old / contaminated fuel. Clogged fuel filter. If it's a motor that needs gas/oil mix, does your gas have the right oil mix?
  • Air: Dirty, clogged air filter or air inlet.
  • Spark. Is any electricity making it to that proven-workable spark plug?
  • Compression. For this one, the most likely problem (other than a toss-the-engine thing like a broken piston) would be if the spark plug is not tightened into the mount hole, allowing the air to leak out rather than compress.
  • Exhaust. Most lawn mowers will have a spark arrestor on the exhaust to make sure you don't set a dry yard on fire with your exhaust. It's often overlooked in diagnosing two-stroke engines. Make sure it's not clogged or blocked.
  • Lubrication. Is there oil of the right type, and up to a proper level on the dipstick. No oil equals way too much friction in the engine.
Good Luck!

DH

Apr 25, 2016 | Snapper Garden

1 Answer

I have a SRM2100 trimmer, it will not run unless the choke is full on and of course after it runs in this mode a little while, it fouls the plug and quits. I cleaned the carb, installed new kit, new...


hi there jaybolt

here is a website for parts

http://www.partstree.com/parts/?lc=echo&mn=SRM-2100+Type+1+S%2FN%3A+001001+-+159490

all being well and compression and spark and timming , muffler is clear , carby is clean , and diaphrams are all ok you mention carb rebuilt , fresh mix , and fuel filter and lines are good

does the unit run with 2 stroke mix in the plug hole - then stop ?
if yes assume compression and spark are ok,, if no check compression and spark and muffler

will the unit run with 2 stroke mix sprayed into the carby throat, then stop ?

if it does sounds like you have a air leak somewhere in the intake system

could be at barrel base gasket, c/case joint, manifold boot/ block gasket, carby gasket , impulse hose ,if this unit has one , c/case main seals leaking

2 strokes need air tight c/cases in order to pump fuel / air / oil mixture from c/case to cylinder
and to create a vacuum for entry of fuel/ air / oil mix from carb to c/case

symptoms of air leak are -: hard to start, wont idle, stalling, low power, inconsistant idle, over rev
overheat

pressure and vacuum testing can be done by blocking off intake and exhaust with rubber and metal plates , then fitting adapter to spark plug hole , and placing piston at bdc , pressureise cylinder to 7 to 8 psi of pressure and check areas , base gasket, manifold joint, main seals, , impulse hose ? for leaks with soapy water - if leaking bubbles will be evident

if no leaks and pressure is held at 7 psi for at least 2 minutes with dropping - presure test is good
next do the same test using vaccuum again go to 20 - 30 inch / vaccuum

if vaccuum held unit is ok

suggest take a good look at carby and recheck its rebuilt correctly and setup particularly if P and V test are good and spark coil tests good with a coil load test using a spark gap of 6.00 mm to stress the coil ( simulates spark under compression load)

have a look and let me know what you find

cheers pauly46

Jul 03, 2011 | Echo Garden

1 Answer

It starts, will accelerate, and leaking oil from the area of air filter


One of two things is happening here. One thing for sure is, the engine is NOT completely combusting the fuel/oil mixture in the engine. Your mix may have too much oil in it, the rings on the piston may be leaking, letting fuel by to the exhaust port. I would first pull and clean or replace the spark plug. If oil is coming out the exhaust, a partially fouled plug is probably part of the problem now. Check that your fue/oil mix is at the proper ratio. I would also remove and clean the spark arrestor in the exhaust port and the muffler itself if you want to keep it running.

May 08, 2011 | Craftsman Garden

1 Answer

Tanaka TBC 160- very hard to start, any suggestions for possible reasons? Replaced the gas mix but it starts up & then stops running. tried new gas mix, checked throttle- seems to operate, Any...


hi there

paul 46 here.

all being well and compression and spark and timming , muffler is clear , carby is clean , and diaphrams are all ok , fresh mix , and fuel filter and lines are good

does the unit run with 2 stroke mix in the plug hole - ?
if yes assume compression and spark are ok,, if no check compression and spark and muffler

will the unit run with 2 stroke mix sprayed into the carby throat ?

if it does sounds like you have a air leak somewhere in the intake system

could be at barrel base gasket, c/case joint, manifold boot/ block gasket, carby gasket , impulse hose ,if this unit has one , c/case main seals leaking

2 strokes need air tight c/cases in order to pump fuel / air / oil mixture from c/case to cylinder
and to create a vacuum for entry of fuel/ air / oil mix from carb to c/case

symptoms of air leak are -: hard to start, wont idle, stalling, low power, inconsistant idle, over rev
overheat

pressure and vacuum testing can be done by blocking off intake and exhaust with rubber and metal plates , then fitting adapter to spark plug hole , and placing piston at bdc , pressureise cylinder to 7 to 8 psi of pressure and check areas , base gasket, manifold joint, main seals, , impulse hose ? for leaks with soapy water - if leaking bubbles will be evident

if no leaks and pressure is held at 7 psi for at least 2 minutes with dropping - presure test is good
next do the same test using vaccuum again go to 20 - 30 inch / vaccuum

if vaccuum held unit is ok

suggest take a good look at carby particularly if P and V test are good and spark coil tests good with a coil load test using a spark gap of 6.00 mm to stress the coil ( simulates spark under compression load)

have a look and let me know what you find

cheers pauly46

Apr 30, 2011 | Tanaka Commercial Grade "Inspire" Design...

1 Answer

Filled with gas/oil mix and won't start. Was running fine 30mins before. No issues at that time.


Remove the spark plug and test for snappy blue spark. If ok, pour a little fuel mix into the plug hole and try for start. If it pops several times, check the fuel filter, air cleaner, and muffler for plugging. Check the condition of the fuel lines and the primer bulb. Did you make sure that you used proper mixing of the fuel/oil? Be sure to use a modern synthetic saw oil with fresh fuel at the required ratio and use it's own can for mixing/storage. Shake the can thoroughly just before filling the saw. Hope this helps!

Sep 05, 2010 | Garden

1 Answer

Having problems starting Makita strimmer. There is quite a lot of smoke coming out and then it stops. Have looked at spark plug -clean, and cleaned air filter. Could the problem be the petrol and oil mix.


Use 50:1 gas/oil with a GOOD QUALITY 2-cycle low-ash synthetic oil.

Remove the muffler and check the spark arrestor isn't partially blocked.

With a clear muffler, and the mix as described, there will be hardly any smoke at all.

May 09, 2010 | Black & Decker String Trimmer Cordless 12"...

2 Answers

My TB320BV slings oil all over my pants. It comes


No, there is no factory sealed oil inside the blower. Did you smell the oil that was on your pants? What I recommend is first, check the head bolts, make sure they are all tight, then remove the muffler (with it not running and cold, of course) and examine the exhaust port, piston and ring. You should see no residue in the port itself and the piston should look shiny and smooth and the ring should be able to move when manipulated with a screwdriver.

Next, pull the spark plug and check the anode (the part that is inside when the plug is installed). It should be dark but not sooty and not wet.

What these tasks will accomplish is:
If there is no oil residue in the exhaust port, the piston is clean, and the plug looks and smells normal then replacing the muffler may take care of the issue.

If there is oil residue in the exhaust port, check the plug; if it is wet, move to the carburetor, intake, choke and air filter.

If the air filter is excessively dirty, replace it, then replace the plug and replace the muffler; that should clear up the problem.

My reasoning: a dirty air filter restricts the air flow through the intake, thereby making the air/fuel mixture too rich; the oil doesn't get completely burned, so it is slung out of the muffler.

Loose head bolts could (not probable here, but possible) allow the oil/fuel mixture to leak out and get all over your pants. I don't think it is the bolts, though, because if they were loose you wouldn't get the right compression and the engine wouldn't run.

Try all of this and, if it does not fix your issue, let me know here...but I have a feeling this is going to fix it.

Nov 23, 2009 | Troy-Bilt Mtd Southwest Tb320bv...

1 Answer

My Homelite UT-20002A trimmer have a hard starting problem. I remove the muffler and cleaned the carbon in the exhaust port. I also replaced the spark plug, but still the trimmer is dificult to start.


If you can, check to make sure there is a spark. Check the plug and notice if there is a presence of gas/oil mix on the plug or in the cylinder. Also, make sure the air filter is clean Try to make sure all bolts and screws are tight as lots of vibrations can loosen some of them.. An air leak on the engine could be causing your problems. A carburetor that is in need of a rebuild will do the same.. Finally an engine that is badly worn and has weak compression will not start, period.

Nov 17, 2009 | Homelite Garden

1 Answer

I have an Echo Backpack Blower PB46-LN that is leaking black oil out of the muffler, its easier to start when its cold but when its hot it difficult to start, also I dont even need to prime it to get it to...


This senerio is an 'over-rich' condition, most often caused by an improper fuel/oil ratio mix, and the 'exhaust screen' or 'spark arrestor' on the outlet of the muffler is plugged. Cleaning the screen may be all that is needed to correct the problem. **Make sure this screen is clean, and operate engine for at least 5 minutes before making any of the suggested adjustments below.

Basics to check:
1) Spark plug - brown or dark brown - OK
a) is it carbon or fuel fouled
b) is there spark

2) Muffler remove for inspection
a) exhaust screen clean or plugged
b) inspect cylinder wall/piston as the flywheel is slowly rotated

Overfuel or 'rich' condition
Basics to check:
1) Spark plug - brown or dark brown - OK
a) is it carbon or fuel fouled
b) is there spark

2) Muffler remove for inspection
a) exhaust screen clean or plugged
b) inspect cylinder wall/piston as the flywheel is slowly rotated
3) Check Air filter for fuel saturation
4) Allow engine to run for 5 minutes to excess fuel from muffler
5) Fuel mixture ratio: Make sure the oil mix is per your manufactures recommendations
6) If after the above the engine is still smoking and blubbering:
Adjust carb mixture screws to a 'less rich' setting
*NOTE: only move mixture screws 1/8 of a turn at a time,
and try operation before any more adjustment

Nov 12, 2009 | Echo Garden

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