Bought this old yellow jacket the day after Christmas, it has a 5h Briggs on it but no control for the choke. I can't find a picture of one with the same setup so I'm thinking this engine came from something else that had a lever for the choke. What is the best way to control the choke from the seat?
Is there a calculator to figure out revolutions of the engine to match them to gearing?
Don't see the pic, but most of the ones we built or even raced, had the Briggs slide choke. If it's a butterfly choke, we never had a cable.
Our most common gearing was around an 18: 56 or close to that.
Tire size plays a big part in the calculations.
Just let it idle a bit then open the choke up. If you cant run it without operating the choke while driving, you need to clean the carb.
RossD said:Just let it idle a bit then open the choke up. If you cant run it without operating the choke while driving, you need to clean the carb.
This. I've never seen one that needed the choke except to start and run for maybe the first minute. Unless it's running too lean, as noted above.
The 5 HP B&S on my kids' old kart, I would pull the slide choke. Start the engine, then gradually push the slide choke back in, fully in within 60 seconds or less.
Ok, probably needs cleaned then. It sat for years so not surprising.
In reply to RossD :
Yep, no need for the choke when driving.
There are charts to figure the gearing, I have a "wheel" that does it.
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