Question about Garden

3 Answers

Mccullough chain saw pm610 chain slips -- maybe clutch issue

The engine runs fine, but the blade will not run fast to cut wood. It worked fine today, and then after letting it set for 30 minutes the engine started up fine, but when the trigger is pulled, the chain saw blade just moves slow. I removed the cover, cleaned and replaced. The blade is not too tight and can be moved by hand.

Posted by on

  • 2 more comments 
  • anh883row Jan 03, 2009

    The chain break is not jammed. The chain rotates freely when the engine is off. How do I check the clutch?? Is there a manual on line to download for this?

  • anh883row Jan 03, 2009

    I tried it again this morning, same results. Chain moves freely, and break turns on/off just fine. I did notice a lot of oil leaking. Any other suggestions,


  • anh883row Jan 07, 2009

    You asked: have you greased your clutch bearing ever I will ask the owner, as the chainsaw is not mine, just borrowed. Any diagrams or manuals that I can download on line to find the clutch???

  • sanfordcongo Feb 21, 2009

    I have a Montgomery Ward chainsaw. The chain will slow to a stop while cutting but the engine runns at full throttle.

    Is there a remedy for this?



3 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.


    An expert whose answer got voted for 20 times.

  • Expert
  • 181 Answers

Have you greased your clutch bearing ever.some times they get dirty and tighten up after running a while.pull your clutch off and clean and grease bearing with a little alex grease,and I mean just a few drops.not meant to have a lot of it,too much will burn the crank shaft and you will have more problems then you started with

Posted on Jan 07, 2009

  • steve
    steve Jan 07, 2009

    the clutch is on the chain drive have to remove the the drive sprocket.some times you need special tool to remove it.


  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

I just had this problem. It is possible that your chain drive teeth have jumped off the drive sprocket. There is a guide for the chain to follow and is decievingly difficult to verify that the teeth are in the drive sprocket. Turn the saw upside down, and look at the clutch. Check the chain to see if the chain is actually on the sprocket and not beside it. It looks right, but it's not.

Posted on Jan 12, 2009

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 20 times.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 17 Answers

Hope the chain brake isn't jammed on.
does the chain rotate easy bty hand when engine is off. If not check bar ,chain. and sprocket condition,may be jamming up or don't oiling.
610 clutches are on a taper so can slip or break if over tightened.

Posted on Jan 03, 2009

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

5 Answers

What would cause a new chain saw not to cut

Maybe I'm reading this wrong, but it sounds like you are saying your chainsaw is newer and runs fine, but it just isn't cutting wood well?

If that is the case then it means the chain wasn't sharpened correctly. Lots of guys do it at home and don't file down the raker teeth in front of the cutter heads, so the teeth don't grab into the wood and just nibble at the wood and make fine sawdust. It is always best to get the chain sharpened at a saw shop first so you can get an idea of the correct angles and depth of the rakers etc. After that you can try to match the saw shop for a while with a round file to take off ragged edges unless you have a decent professional saw sharpening unit.

Nov 03, 2014 | Poulan Wild Thing 2375 18" Gas Chain Saw...

1 Answer

The saw does not cut well at all. I've sharpened the blade and even purchase a new one. Still, I can barely cut through a 6" limb. Ideas?

It could be the clutch. If the chain slows down and the engine does not the clutch is slipping and needs to be replaced.

Sep 23, 2013 | Craftsman 38cc 16" Gas Chain Saw

1 Answer

Motor runs but blade stops 1" into the wood

Seems like it could be a clutch/drum issue. I have known clutches to break through the threads in the crank shaft so they appear tight but are actually broken. I'd look at the drum assembly to see why the drive to the chain is slipping.

Feb 17, 2013 | Stihl 009/010/011 Clutch/sprocket

1 Answer

I have an old McCullough chain saw 12 or 14 inch chain length. What is the oil to gas ratio I need to use? 50:1? 40:1? What do you recommend? I can't see any serial number or identifying numbers so the...

Run 40:1 using fresh fuel and a modern synthetic saw oil--mix it in it's own can and be sure to shake the can thoroughly each time just before refilling the tank. Don't mix up more than a gallon unless your business is sawing. You may need to deal with a plugged fuel filter if it won't start. The oiler button was intended to supplement the pumped bar oil when cutting thick/difficult wood. Normally, it is not needed. To start, set the choke full on until you hear a pop, then back the choke off about half way before the next pull (don't forget to set the fast idle button near the throttle--squeeze the throttle, push the button and hold while releasing the throttle). As soon as you squeeze the throttle again, that will release the fast idle, so make sure the engine is warmed up and the choke off before hitting the throttle. This engine will drive a 16" bar and chain, so upgrade when the original parts wear out. Hope some of this helps!

Oct 19, 2010 | McCulloch 16 Inch Gas Chain Saw MCC1635AK

1 Answer

I bought a used McCulloch 4016. The engine can rev up nicely, but it cannot cut through 2 inch piece of wood. It does not stall, the chain just stops moving, and the engine seems to slow down as if it...

A dull chain can certainly cause loss of cutting ability and generate a lot of heat in the chain. The clutch may be full of chain oil and is slipping. Remove the bar and chain, then wash out the clutch internals with spray carburetor cleaner and let dry out. Clean the oil passages in the drive end of the bar including the two small passages that go out from the large holes to the chain groove an each side. Clean the entire chain groove. Start the engine with the bar and chain off of the saw--you should see oil ooze out of the small port in the engine case where the bar fits to. Reassemble the bar and chain after everything is cleaned--tighten the chain until the lower run just pulls up to the bar, but you can still run the chain by hand. Make sure the chain teeth are properly file sharpened and the teeth cut toward you on the bottom run. When running, the engine should 4-stroke at speed unloaded, but immediately 2-stroke when cutting. Hold the bar tip near some cardboard while running the engine at speed for several moments--it should throw off a thin line of oil on to the cardboard. Hope this helps!

Jun 13, 2010 | Garden

2 Answers

The chain slows down or stops when cutting. The engine runs fine and doesn not slow down. I checked the oil, cleared the oil vents to the chain, the brake is fine and is not causing the problem. The...


Sep 17, 2009 | Poulan Wild Thing 2375 18" Gas Chain Saw...

1 Answer


The make, model, and occationally the serial number help us solve your problem.

Does the engine quit running? (Carburator needs adjustment)
Or does it continue running and chain stops? (need clutch refaced or replaced.) (to aggressive a chain for the size of the engine)

I think you replaced parts unnecessarily. Maybe quicker and cheaper to visit your friendly neighborhood chainsaw shop. A good one can repair it even if they do not sell your brand.

Sep 09, 2009 | Homelite Garden

1 Answer

Bad Clutch??


Before other checking change the spring of the clutch(2).

best regards savumihai71

Feb 14, 2009 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

Not finding what you are looking for?
Garden Logo

Related Topics:

1,454 people viewed this question

Ask a Question

Usually answered in minutes!

Top Garden Experts


Level 3 Expert

479 Answers

Dennis Key
Dennis Key

Level 3 Expert

2458 Answers

john h

Level 3 Expert

7409 Answers

Are you a Garden Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides