I managed to aquire another fairly decent Briggs & Stratton Quantum 45 Engine on an alloy Rover Base. I stole this photo from my last post however it is exactly the same engine. I have not got the codes on me right now however I will put them up when I can.
The mower would start when I got it so:
1) Thoroughly cleaned the carby and replaced the bottom washer as it was leaking fuel.
2) Fixed the primer system as it was blocked up with gunk.
3) Replaced the air filter as the old one I don�t think had ever been replaced.
4) New Spark plug/ blades etc
5) Thoroughly cleaning the mower with compressed air to remove all dirt build up
After a couple of minor adjustments to the carby it usually starts first or second pull after priming. I went and mowed my lawn however I get this strange popping sound from the exhaust. The sound is only light and to most probably not noticeable however I want to make sure it is spot on.
From what I have read to date I am thinking a leaky exhaust valve might be the culprit as the next thing on my list was checking the tappit clearances. Could someone please confirm the clearances for me and what would normally be considered acceptable for an engine of this age noting I don�t expect it to be perfect.
I know how to check the tappit clearances but if we get into fixing valves I will need some guidance please as I haven�t done this before.
The engine idles and has a nice full speed sound.
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