sv40 engine...

Many thanks Mick..... Once I get it stripped out I hope I can compare it to something similar that I can fit 👍

What machine are we talking about?

Got a photo of the engine if no model number.

Right....now it starts /runs and behave like a mower should...but....after about 10 mins i have oil smoke from the side nearest the engine from the exhaust....by the time its cooled down and the exhaust removed it not obvious where it from....so i re/sealed the breather...checked the dipstick extension tube..lower engine seal is dry...its not coming out ot the exhaust deffinatly behind it...and ideas

Hi Dave, and welcome to TGMForum.

I'm not a Mountfield service dealer unfortunately, so don't have access to their official parts lists.  But searching around I haven't really found anything as yet. I'm betting it's the same coil used on some of their older Strimmers or Brushcutters.

I'll dig around (excuse the pun) some more and see if I can find anything.

First post for me👍
I have acquired a Mountfield mini tiller, non runner, and it needs a coil pack and primer bulb for starters. However, absolutely nowhere can I identify the model. I have attached a photo below as well as the service label from 2015, which is the only id I have to go on. The number on the label is repeated on the chassis plate, but no other clues. Any thoughts from wiser minds than me?TIA
Dave

Glad you found the solution.  Normally on a well designed one with no wear, those type of pinions with the internal cams should nudge the pin into the correct position by itself.  The Mountfield ones are pretty good generally.

That said, they don't make them like they used to especially bad in the later Chinese branded machines, nothing but trouble. Ask any Cobra dealer. lol..

Hi all...found the issue.....the grease in the drive gears behind the wheel was so dry and set it wasnt letting the little pin locate properly... so...chip away old grease and use light oil and all is well....hope this helps someone

Hi chaps.....well I'm trying to help another friend....here we have a mountfield sp53h that has no drive.......check done so far....check belt (new )check drive wheel cogs..done adjust clutch (behind flap 6mm)done....adjust cable..feels good and smooth..done..Im thinking gearbox...od any advise...cheers

Hi Changy.

I normally only fit genuine coils on customers machines because of the amount of stuff I've read about the aftermarket ones being a bit hit or miss. That said, I have in the past used after market carbs and coils on my own stuff which has worked out great.

All I can say is it's a gamble.  For the cost it's probably worth a try, even better if you can get your money back if it doesn't work.

I'm assuming you customer is using them commercially in which case they get a lot of heavy use.  Trouble is they don't let them idle for a few seconds prior to switching off and that can cook the coils from the heat of the engine.  While running they get air to cool them.  Idling after a work run give the engine a chance to cool slightly before switching off. They used to put this in the operators manuals but not sure it is now.