Question about Makita EM4251 16" 4 - stroke String Trimmer

1 Answer

Makita gas trimmer RBC221. engine runs fine but trimmer head does not turn.

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert who has answered 20 questions.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 90 Answers

Would suggest that the cable that runs the head is broken or there is too much material wrapped around the head... remove the engine off the trimmer and check the cable that runs to the head....

Posted on Dec 14, 2011


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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

TB70ss Trimmer runs but does not turn the string

Remove the angle drive gearbox near the string head and spin it to see if everything is moving properly. You may have stripped the gears out of it.

Sep 16, 2012 | Troy Bilt Tb70ss Gas Trimmer

1 Answer

Engine runs, but the head won't turn

if it has a curved shaft check the cable they break went over loaded on both models check the clutch

Mar 23, 2012 | Craftsman 25cc Gas Line Trimmer

1 Answer

The engine runs fine. The trimmer head does not spin I believes it a clutch problem. How do you test and/or remove it to replace it?

Are the drive shafts engaged properly? you need to remove all the plastic engine covers and handle to access the clutch. I can send you the IPL if you need it.

Jul 27, 2011 | Husqvarna 28cc Gas Line Trimmer

1 Answer

Makita rst210 (brand new). Engine runs well but cutting head won't spin. how do you release/apply clutch?

I would like to suggest that you follow the warranty instructions for this machine and go about getting another unit. I'm sure if it is a Makita, that there is a valid warranty for it. The clutch is centrifugal and if it is not working, much disassembly is required.

Jan 08, 2011 | Garden

1 Answer

Motor works fine, but trimmer will not rotate

Have an assistant start and hold the trimmer. At idle, there should still be a little drag on the clutches to make the shaft spin on that split shaft trimmer with the accessory head removed. No need to rev it or do anything fancy, but teamwork will make it safer.

Now forget about the engine and clutches - does the accessory head spin freely when turned by hand (removed from engine still!) and with a clear rotation of the shaft end visible inside the connector socket? Is the shaft end square with sharply defines angles, or rounded off? Does swapping in a different accessory function normally and as expected?

Sometimes the nub end of the shaft wears. Worse, the socket on the engine side has eaten itself to pieces. Worse, worse yet, clutches in the engine side that engage the accessory shaft are worn and there is simply no transmission of power. Good luck, hopefully this info will set your boots in the right direction!

May 08, 2010 | Craftsman Convertible 25cc. Gas Line...

1 Answer

What is the gas/oil mixture ratio for the Makita eh450 hedge trimmer

usually it would be about 50:1 in todays engines, but if you are unsure mix 40:1 wouldn't hurt it , may run a little rich,

Oct 07, 2009 | Garden

2 Answers

Craftsman gas weedeater. Engine runs, but the head won't run

Cut 1/8" off outer (aluminum) shaft. Lube inner shaft with STP or heavy gear lube this will re-engage worn square drive .Replacing inner cable is un-necessary this is normal wear. Sears Master Tech BB

May 26, 2009 | Craftsman 25cc Gas Line Trimmer

1 Answer

31 cc Straight shaft/ head won't turn when connected and running

pull the shat off the engine and check the inner shaft it sounds like its stripped or the theengine side is cracked hope this helps

Oct 22, 2008 | Ryobi 30 Cubic Centimeter Curved Shaft Gas...

Not finding what you are looking for?
Makita EM4251 16" 4 - stroke String Trimmer  Logo

Related Topics:

238 people viewed this question

Ask a Question

Usually answered in minutes!

Top Makita Measuring Tools & Sensors Experts

Vuk B

Level 3 Expert

683 Answers

Brad Brown

Level 3 Expert

17322 Answers

Tom Chichester

Level 3 Expert

44896 Answers

Are you a Makita Measuring Tool and Sensor Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides