I would check the compression and go from there.
We have a same era H40 and an older HS50 that I’ll be rebuilding this winter. Plus two Briggs 2hp that need attention.
I would work on it, they sound good, and you can learn a lot.
Your bike is a fine machine, run the Predator till you get the...
Sorry, not enough signal for an image just now.
Kind of mint or pea green with the Briggs and Stratton EZ pull decal, no hp tho.
Came off a rototiller
Almost an exact twin to the 2hp on the Horney Toad
Both are Vacu-Jet slide choke powerplants.
More to follow
I use 1” aluminum plate, cut it to fit. Drill holes, machine the slots for movement.
I’m sure there are some really well-designed engine riser plates out there for you to choose from. They probably include some of the mounting hardware as well.
Wrenches leave telltale marks on bolt heads and the surrounding area, an indication that someone has had it apart before you got it.
My in-line tester is used any time I think the ignition is at fault. I like the Oregon with the little orange light. I should have separated it from the...
I would start with the easy stuff. Check for any intake gasket leaks, especially at the 6 o’clock position. Use an inline spark tester on it.
Check for head gasket leaks. Check and clean the carb fully. It probably needs it anyhow.
I would start with these.
Are there fresh tool marks on...
They kind of look like they were wound onto the tubing. The coils could be separated with a flat blade screwdriver or two and wound on. The “weld” forms a point that anchors the spring from moving about.
Maybe edit your title and add Taco to it to attract those Taco owners that are here.