Author Topic: K760 carb  (Read 125 times)

0 Members and 0 Guests are viewing this topic.

Offline Harry53187

  • pruner
  • *
  • Posts: 1
  • Karma: 0
K760 carb
« on: September 12, 2017, 10:36:16 pm »
I have a k760 cut off saw. I couldn't get it to prime. I cleaned the carb and still couldn't get it to prime.. Bought a new carb. Still doing the same thing. If I take the carb out and put the priming bulb right on the line coming from the gas tank it primes right up.. what could be wrong. So confused..

Share on Facebook Share on Twitter

Offline bill saf

  • pruner
  • *
  • Posts: 3
  • Karma: 1
  • Location: west central Il
Re: K760 carb
« Reply #1 on: September 13, 2017, 09:42:30 am »
could be a plugged impulse tube in the engine or a bad impulse line, bad diaphragm in carb /stiff or hole in it, plugged hole in the steel cover for the diaphragm.This is what I look for to start but you have all ready have a new carb so I would look at the first two. from what I can see is that the K760 came with a prime bulb so I would look at the base of the prime bulb it has a check valve in it it could be bad or stuck.

Offline joe_indi

  • 5 cube
  • ***
  • Posts: 92
  • Karma: 29
  • Location: Cochin, India
Re: K760 carb
« Reply #2 on: September 15, 2017, 10:04:32 pm »
My "redneck" method is to mix PU thinner and dishwasher liquid and immerse an inlet connection of the carb into it. If the primer sits on to of the carb. Use fingers to close the air inlet and outlet sides of the carb and then pump the primer. And pray :) . In 90% of cases whatever is causing stuck checkvalves will be dislodged and the primer will start pumping the redneck cocktail. Then try it with the air inlet and outlet open. If it stops pumping the jet valve is leaking. Pour some of the cocktail into the air passage, or even better, immerse the carb in the cocktail and keep pumping. Keep checking whether it can work out of the cocktail. When it does, move it into some fuel and pump, if it works, pump in some fresh fuel to flush it and try it on the saw.


Related Topics

  Subject / Started by Replies Last post
11 Replies
Last post March 09, 2011, 02:02:13 pm
by Old Iron Logging
41 Replies
Last post February 10, 2020, 08:29:29 am
by Cut4fun .
1 Replies
Last post January 07, 2014, 11:00:02 pm
by jmester
34 Replies
Last post August 02, 2014, 04:07:59 pm
by 630 red
35 Replies
Last post November 11, 2016, 11:28:35 pm
by pete
3 Replies
Last post June 30, 2015, 07:11:44 pm
by Jason K
5 Replies
Last post February 21, 2016, 09:42:40 am
by jmester
1 Replies
Last post September 18, 2017, 08:38:44 pm
by 3000 FPS
2 Replies
Last post October 30, 2017, 06:53:53 pm
by 3000 FPS
5 Replies
Last post May 05, 2020, 09:30:13 am
by ray benson