OutdoorKing Repair Forum Forums Collectors Corner Rotary Masport Ironhorse 2 Stroke

I hate it if they won't start first pull, second pull is ok third pull I'm getting upset

I think along similar lines. First pull is almost expected, second pull I'm OK, third I'm disappointed.

Out of all my larger small engines the only one that consistently starts on the third or so pull has been my Briggs 725 EXi. It used to start on the first pull, then second, and now the third. Hasn't even been in service twelve months! Honda GX100, first pull. Powertorque, first pull, full crank, first pull (we'll see about that after the rebuild ). Even my freaking Pope is starting on the first or second pull!

All my Stihl equipment seems to start second or third pull, but always has.

Seven pulls today, and off I went in a cloud of four stroke smoke!

Bloody thing.

Mystyler,
what 4 stroke are you talking about now?

I would guess Honda - in my experience as you talk about how easy they are to start they have other ideas

Spiteful things sometimes

If you mean the briggs - I am not surprised

100% the Briggs.

I cannot fathom how oil keeps finding its way into the cylinder. I lift the rear wheels up just a couple of cm to take it out of the storeroom, and to put it back in. That's the most extreme attitude it has ever encountered.

That is enough if the rings are worn and you dump the oil up against the back of the piston

Could very well do it Mystyler - one of my Quantums smokes if you lift the rear wheels more than 4 cm if the oil is so much as 1mm over full

What weight oil is in there?

Unreal. It solidifies my belief that two stroke or electric are the way to go for mowers - the engine has done one mowing season! It's slightly under filled with SAE30.

Sorry for the unintentional hijack, wce.

Mystyler - I believe 4 strokes have their place; they are quieter and are just powerful enough for the regular lawn and the average idiot who can only say 'I don't want to have to mix oil'. But with plain bearings, alloy bore, they are not a long term proposition.

Its just new briggs aren't good 4 strokes in my opinion.

Only new engine I would buy is a gxv honda, although these alko loncin 160's look good - cast iron liner and all. Although I hate autochokes


Back to the chuzuki - whats the black pipe on the carby - PCV or carby overflow?

Morning all

I presume it's PCV but not 100% sure, it doesn't connect to anything on the back of the air filter housing. It's consistently starting on about 4 pulls but I'm still tinkering to see if it can be improved.

Cheers
wce

Hi all

I'm happy enough to release the Iron horse back into the wild. Seems as though it is a common problem to be hard to start cold but run great when going. Being satisfied that the carby had no blockages etc the best I got to was about 4 pulls to start. I concluded that they just don't draw up enough fuel even with the choke butterfly securely closed.
The choke butterfly has quite a large hole in it so decided to block this thinking it will improve the cold start or flood. Started first pull, then on repeat cold starts 2 pulls but if it didn't fire second pull, next pull resulted in flooding, I thought this was good as at least it was pulling up enough fuel. From here I adjusted the choke butterfly opening via the throttle cable in very small increments until I now have a very reliable 2 - 3 max pull cold start without any signs of flooding. Don't even think about starting them without the air filter and cover on ( unless you flood it ) they must be set very lean to meet emission standards, with the engine running at lower revs opening the air filter box results in engine surge. I tried giving the air filter a light oiling early in the staged of trying to improve things but felt it made no difference, it's quite a large thick foam filter. The other reason I think they are set lean is the amount of time it takes to run out of fuel once the tap is turned off, I thought the tap must have been leaking but it wasn't, they must be great on fuel consumption.

Cheers
wce