Question about Husqvarna Saws

1 Answer

Husqvarna k760 Rebuild But run at high rev and bogs at idle

Had a complete rebuild was run with neat fuel. replaced pot and piston and replaced carb but it wont rev with throttle engaged and just bogs down. it ticks over but has the same bogging noise. ive replaced the fuel line and pickup filter to rectify any leaks and also went to the rouble of replacing the fuel cap as suggested and running it with fuel cap slightly open but with no luck replaced decomp and at this stage im totally lost ive must had ive done at of overhauls on saws but never come across this problem the crank was in good condition oil bearings and sealed gasket. where to go from here not sure tried rerplacing the carb with a known working one please help

Posted by on

  • Bumpy Nov 21, 2013

    Thank you for the suggestions in this case it was the magneto

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 1,615 Answers

Leaking gasket carb to head.

Posted on Nov 19, 2013

Ad

2 Suggested Answers

6ya6ya
  • 2 Answers

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

Hi,
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.
Goodluck!

Posted on Jan 02, 2017

Ad
H2_Brad
  • 425 Answers

SOURCE: hello, i have a stihl ts400 and i just rebuilt the topend(crank,piston,cyl,all bearings and seals.Fires up easy, idles fine,revs fine, but when you hold the throttle down it doesent want to hit rev li

There is not an actual rev limiter. The top end is controlled by the carb. You actually want it to sound a bit rich at full throttle so that it has enough fuel when cutting under a load. What causes me some alarm is the revving up part. If it revs too fast that is a lean condition and can quickly ruin the piston and cylinder much like running straight gas. A torn intake boot can cause this. The high speed spec for the TS400 is 9,600 rpm + OR - 500 RPM. Your saw may not have a needle to adjust the high side as some have only the low speed adjuster. Also when you disassemble and clean the carb always use a new kit with the gaskets and diaphragm. Any Stihl dealer can furnish the kits and they aren't terribly expensive. Often between $10-20.

Posted on Aug 25, 2012

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Runs fine until it gets hot then loses power on high revs and revs up erratically.


FIRST YOU MUST LOOK TO THE PISTON !
Remove the exhaust muffler. and look at your piston if there are grooves on then remove cilinder because of warranty when it was bought?
If its an older tool then look on the gasket on the airfilter has a bad kind of connection compared to other professional brands , the gasket on that can be very simple leaking .

There are also Chinese replacements to find , but i am wondering about the all worthwhile investment , you should have looked on the color of the sparkplug i think so and replaced the spark plug , the tank airiation but its can be also not because the long time and neither the L+H adjustments. No the ignition coil is it to long for by thermal failures so the only thing i think of is piston clamps by overheating because of grooves and a bad Gilnisil layer on exhaust and cilinder . ALLWAYS use new gaskets on the airfilter and all parts to make it realy airtight, its the most weak thing on this model.
Nikasil Plated Husqvarna K750 K760 Cylinder Piston Kit Non OEM 5207573 02

Dec 07, 2015 | Husqvarna 12 Cutoff Saw K760-12

1 Answer

1987 Dodge Dakota 3.9 engine, Holley 2 barrel. Having running issues. Bought the truck cheap cause it wouldn't run. Cleaned the carburetor and installed a rebuild kit. Starts right up and idles great....


Yes, the floats may be causing the fuel level in the carb. to be too high. The black plugs indicate running too rich. Clean the plugs and check the fuel level.

Sep 09, 2013 | 1987 Dodge Dakota

1 Answer

I have a Stihl 009 chain saw that I just rebuit the carb on and when it runs at high speed it does so only for a few seconds then dies. It will idle all day long. What could the problem be?


Have you replaced the fuel filter in the tank? it will idle as the engine is not calling for much fuel, however at full revs it calls for a greater amount of fuel, if that fuel is not available the saw dies.

Dec 29, 2012 | Garden

1 Answer

Husqvarna k760 will not prime and/or run properly


Get a carb. rebuild kit ,these models have carb.problems and need rebuilding,shop charges 70.00,get kit for 10.00 and diy.

Dec 11, 2012 | Garden

2 Answers

ECHO SRM 2100 GRASS TRIMMER HAS NO POWER


For all others with String trimmers, blowers and other 2 stroke style engines...
If no power on high, tends to bog, won't run once choke off, check these:
  • Fuel Filter - It's IN the Gas tank; Just replace it
  • Spark Arrestor at Muffler, it's a screen that tends to clog up and causes very restricted exhaust flow
  • Spark Plug - again just replace it
  • Carburetor, clean or install rebuild kit
  • And adjust sorta hidden High/Low carburetor adjustment screws
Take a look here...

And here:

And one more...

Aug 10, 2012 | Echo Garden

1 Answer

Husqvarna 128LD backfires through carb when increasing throttle.


Possibly an ignition module issue, on the advance settings. It could be sparking before the piston closes the fuel port from the carb

Apr 05, 2012 | Husqvarna Garden

2 Answers

Runs good at idle wont rev after quater thottle bogs .revs good if choke is on


HI,,,you have blocked carbs,,they are running lean,thats why it runs better with the choke on,,carbs need to be removed from the bike disasembled and cleaned.

Apr 20, 2011 | 1977 Suzuki GS 750

2 Answers

Engine bogs down when speed is increased.


Ok I have r Royobi Tiller (30CC Gas) And last year it ran fine after rebuilding the Carb. This year it was "hard starts" Idles fine, (Tiny whisps of blue smoke in exhaust with correct ratio) Even seems to run better with the choke "on" but still...at idle only. as soon as I touch the throttle...its bogs down in tune with how much gas I give it. Little throttle? Little bog down, Little more throttle? Almost stalls, a normal throttle rev? it stalls dead! Then starts right back up again in 1 pull and idles fine again!? WTF? So after cleaning a clean carb again, (twice) and seeing no change I thought I'd go look at the original diaphragm and compare it with the rebuild kit diaphragm (which is the one in the carb.) And guess what? The replacement has a larger rivet by a factor of "2". So basically it was flooding the carb, I bent the needle tang down, better but no cigar. But I could rev it half way now. A second disassemble to bend it yet a bit further and Vrooom vroom vrooom ****! So check your needle valve even though you think its 100%. (Especially if you rebuilt the carb with a kit!)

Mar 27, 2010 | Honda 25cc 4-cycle Mini Tiller

Not finding what you are looking for?
Saws Logo

Related Topics:

979 people viewed this question

Ask a Question

Usually answered in minutes!

Top Husqvarna Saws Experts

Pieter Vleeshouwers
Pieter Vleeshouwers

Level 3 Expert

1822 Answers

sgtstrat

Level 1 Expert

28 Answers

ken skalski

Level 2 Expert

152 Answers

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

Answer questions

Manuals & User Guides

Loading...