One thing you will find if calling a parts supplier or even the Mfr of an older engine is that while many of the parts are common in newer engines for the most part the CS people assisting you are simply unfamiliar with older equipment and dont know the commonalities or what will work with what. Sometimes it is the fact that they carry so many different parts for different products that there is no way they can keep up with the new stuff let alone the old.
Part# 37 is the shroud cover in this diagram that measure twice was looking for. Because of the way it is drawn into perspective it is easily overlooked.
A couple of things measure twice and Goat Herder mentioned:
Measure Twice Said: This isnt a direct quote but it was on the subject of getting a Muffler that had a spark arrestor in it and hoping that it satisfied authorities for trail riding...
I think in a previous thread you also mentioned using a Tecumseh Carb and intake. Besides the inherent difficulties of getting proper air to fuel mix when mixing and matching different manufacturers parts especially carbs, most people that use the horizontal shaft engines on go carts and off roaders will adapt a pulse operated carb like a Tillotson or Zama so the do not have an issue of fuel splash in the bowl reducing power.
Goat Herder said: Again this is not a direct quote but it had to deal with the aftermarket Electronic Ignition modules being made to work on all engines.
The promise of electronic ignition modules for older machines is a great thing because beside the fact of providing a hotter and more consistent spark to the plug they also eliminate moisture failure of the points and high RPM condenser breakdown that plague older engines, not to mention the fact that they could decrease the need for service knowledge such as how to properly time points to cylinder TDC position as in in some Tecumseh engines in particular .
However after using many of these aftermarket kits since their inception and despite great strides in quality and reliability, I will generally use OEM ignition parts if available.
I have had loads of module failures and many that simply will not work one one engine where another of the same type will and the first still work on a different engine. In short they are temperamental, unreliable and can frustrate the bejusus out of you.
When we installed these modules in the shop, whether it was because OEM parts weren't available or the customer just wanted it to eliminate points and improve performance we made it explicitly clear to them that there was absolutely no warranty on the part, labor or subsequent damage that could arise from using an electronic module on their machine.
I had a few that grumped about that policy and not guarantying what we did or sold and my response was usually to write down the address of a competing shop that would do it and give them what they wanted because it in the end saved me money to do so. I think Randy that owned our competitor finally caught on to the fact that I was sending him headaches and he also adopted our policy.