Dolmar PS-421 hard to pull start

[ckr74]

My Dolmar is really hard to start. I mean it starts fine if you can hang on to the pull rope handle. I took the pull start off a while back to check if the easy pull spring wasn't broken but it looked fine. Once it's warmed up it's not an issue. It's not hydro locked. Is this common? I mean it's only 40cc. Can't be that bad, right?

 

[wde_1978]

Remove the muffler and check whether there is scoring on the piston!

 

[sundance]

My Dolmar is really hard to start. I mean it starts fine if you can hang on to the pull rope handle. I took the pull start off a while back to check if the easy pull spring wasn't broken but it looked fine. Once it's warmed up it's not an issue. It's not hydro locked. Is this common? I mean it's only 40cc. Can't be that bad, right?

Is this a new (to you) saw or a complete change in how it acts?

 

[holeycow]

My 420 doesn't do that.

are you just yanking on the cord or are you pulling gently and letting the ez start work?

my 5105 kinda pulls back sometimes; especially if I don't let the ez start do its job.

 

[cuinrearview]

My 420 doesn't do that.

are you just yanking on the cord or are you pulling gently and letting the ez start work?

my 5105 kinda pulls back sometimes; especially if I don't let the ez start do its job.

This