If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)

Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

How to alter lawnmower carburettor setting?

zoe · 2008-04-21 15:10:58

My Dads lawnmower engine is running too rich and the plug is sooting up. Would anyone know how to alter the carburettor setting in order to weaken the mixture? It has an automatic choke and a 148cc petrol engine. Thanks! :)

21-04-2008 4:10pm

#1

zoe

Closed Accounts Posts: 198 ✭✭

Join Date: February 2006

Posts: 132

My Dads lawnmower engine is running too rich and the plug is sooting up.

Would anyone know how to alter the carburettor setting in order to weaken the mixture?

It has an automatic choke and a 148cc petrol engine.

Thanks!

0

Comments

#2 21-04-2008 4:13pm

Mailman

Closed Accounts Posts: 1,571 ✭✭✭

Join Date: November 2001

Posts: 1381

generally three 180 degree turns from fully closed is right. It should be mentioned in the owner's manual.
Are you sure it isn't sooting up because it's burning oil rather than petrol
Also take off the air filter and make sure the butterfly isn't closed.

0
#3 21-04-2008 4:36pm

zoe

Closed Accounts Posts: 198 ✭✭

Join Date: February 2006

Posts: 132

Thanks Mailman. I don't think he has a manual for it anymore, the mower is 15-20 years old.

I'll pass on the info and see what he says. Thanks very much!

0
#4 22-04-2008 4:27pm

blackbox

Registered Users Posts: 4,076 ✭✭✭

Join Date: November 2007

Posts: 4032

A dirty air filter can also be the cause of running rich.

0