nobby490 0 #1 Posted May 29, 2020 (edited) hi i just got a qualcast cultimatic deluxe rotorvator and it in need of a muffler/exhaust and its 4hp engine model numb is 100235 /type 056401-code 78063208 can any body help with wich muffler i need i looked but it seems to me its a square type bolt on but not sure or is there any other ones that will fit b&s engine would be great full of any help thanks Edited May 29, 2020 by nobby490 miss spelt Share this post Link to post Share on other sites
Wristpin 399 #2 Posted May 29, 2020 Probably best to stick with the original pattern which may still be available from Briggs but almost certainly from one of the aftermarket suppliers. Most Briggs engines also have an internal BSP thread in the exhaust port to facilitate the use or screw in cylindrical mufflers but the proximity of the chain case and, perhaps, the driven pulley may preclude that. If you can find a decent period catalogue image of the machine it should be possible to identify the original item. Share this post Link to post Share on other sites
nobby490 0 #3 Posted May 30, 2020 yes I found the original b&s engine catalogue and part numbers and I know now there are various types of mufflers for the machine all I have to do is find one for it as far as I know this machine got2 forward speeds and a reverse so it will be interesting to see how it performs im gone restore it and give it a good service Share this post Link to post Share on other sites
Wristpin 399 #4 Posted May 30, 2020 Th attached are from an old Central Spares catalogue and may be of use in identifying the muffler that you need. My guess is that one from the bottom of page 142 may be what's needed. Share this post Link to post Share on other sites
