It's the old 98cc iron engine. It has been using Champions but I'll try and NGK. Paind £150 for it 30 years ago and it ran perfectly until recently, then just stopped and I've put so much time in to it that I'm fed up now.
Ego are brilliant if they fit your budget, and as you say are as good as a petrol mower but without the hassle.I have an Ego battery mower and can’t praise it enough. Unfortunately it’s out of your price range unless you look for second hand ones.
They have more than enough power to compete with Petrol without any of the hassle. My lawns total 75sqm and a 5ah battery gives me 4 cuts before it needs recharging. The mower is propelled but I never use but imagine I’d loose a cut from the battery if I did use it. Since getting the mower I have further invested in the Ego blower and Strimmer, again all have competed or exceeded their petrol alternatives. The other benefit is little wasted time with them so lawns are completed much quicker too.
I had been looking at Stihl mowers previously to getting the Ego and their battery mowers were good too but need to remember they have two battery platforms.
Yes, that option makes lots of sense, but when the problem is proving so hard to find, I'm worried that the reputable dealer will hand me a bill of heart attack proportions. I think I'll try and get my talented mate to have a look at it.My advice? Take it back to your ’reputable dealer’ for a service/overhaul. It’s probably due a good one and worth it.
Less than your budget and likely last another 30 years.