When I throttle down, my S 40 backfires.  Also, at steady speeds the bike has minor surges.  If I keep the choke at half way position the both issues are somewhat better.

The bike is 2005, 9500 miles and no mods from what I know.  No doubt it is running lean and hot as both exhaust pipe and Muffler is blue.  Pulled the brass plug and backed off mixture screw but still same problem.  And the muffler has a hole near the connection to the exhaust pipe.

Including year model and miles and any mods done helps.

There are tons of threads around here dealing with how to reject your carb. Plenty of pictures too! It's a simple process. The only hard part is getting the carb out to disassemble it. Don't be afraid to tear into it. We can walk you through it if need be. Once you get the carb out it's about a 5 minute process.

What is your elevation? That's a determining factor in figuring out what jets you need. I'm roughly at sea level and used the stock pilot and the next larger main with a slight change in the washer thickness for the midrange (see signature). The higher up you are, the less air there is so you will need less of a change in jetting.

Kris01 wrote on 06/19/15 at 07:09:05:


Fifty Ways to Leave Your Lover?

I don't *like* the burbling and popping on a backing throttle, but it encourages me to avoid hard engine braking, and loud pipes save lives & etc...

As with any vehicle, there are a lot of ways to ride a Savage from hard to easy. I'm an old guy and I like to take kind care of my engine, brakes and everything when riding. My mill has never seen redline. It's tight and happy. But that's just me, pampering it like a tractor engine. The Savage is capable of savagery, as long as you're willing to deal with the wear and tear and fine tuning.

This is a good time to thank SS dot com for the Raptor petcock, the seat mod, the idle mix screw bidness and  other stuff. Great improvements at low cost... sweet!

I do have a fork seal that is not responding to the home made hooked plastic cleaner-outer tool, so I'm fixing to wade into the forks. The riser was dinged on that side by sand or gravel. I smoothed out the sharp pits with emery cloth and I have some nice Bike Bandit accordion boots to put on and stop that from happenin' again.