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Joined: Mar 2020
Posts: 1
Novice
I bought one of these early this year and the first run was brilliant, after that it developed a hunting problem. Cleaned carby etc to no avail, today I mucked around with the idle air screw and the idle/pilot mixture screw. I set the idle air screw all the way in and then back out 1.5 turns (which is wrong, bad memory, the manual says back it out until throttle is closed and then screw in 1.5 turns). Mixture screw reset to all the way in and then back out 1.5 turns. It ran OK but still hunted a bit. Then I backed out the idle mixture screw another 1/4 turn (according to the manual this weakens the mixture) and it was perfect. Bit odd, because I thought it was leaning out before and my intent was to richen it. But I'm not complaining. If it runs well without hunting I'm happy.

Dunno where the idle air setting ended up but the idle/pilot mixture setting was the key for me. It makes sense, because when running on the governor and throttle being pulled back the engine would stop firing until RPM drops and governor allows more and more throttle to come in which would trigger the main jet and eventually bursts back into life. As soon as it is running fast the governor pulls throttle out until it's on the pilot system again. If your pilot system is not running well (too rich, too lean, or not enough air) you will always get hunting.

Last edited by Geoff-AU; 07/06/20 08:19 PM.

Rover XL (Suzuki M120X)
Joined: Jul 2020
Posts: 3
Novice
I have just picked one of these up. How light is it?!

I have an issue atm with the fuel cap leaking.. anyone else?

Joined: Jan 2013
Posts: 956
Likes: 20
Moderator
Hi Kinkdogg and welcome to the forum.
Leaky fuel caps are common on the Suzuki 2 strokes. The most likely cause is that the anti splash/breather washer under the cap shrinks and fall into the tank. This then causes the cap to leak via the vent hole. To date i have not been able to source this anywhere i've looked.

Joined: Jul 2020
Posts: 3
Novice
Thanks for the welcome!

Yea, I noticed the fuel caps are discontinued as well which is a bugger. You are correct, there is nothing underneath the cap itself.

I have changed the spark plug, attempted to wash the air filter but it's cooked, a new one is required. Thanks to the tip in a previous post about tipping the mower on its nose to help with a start! Brilliant.

Oh and I have carby cleaaannnerrrrrr!

Last edited by Kinkdogg; 08/07/20 11:41 PM.
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