21a 643b066 Bronco Rear Tine Tiller

Experienced gardeners share their insights in answering this question :
The drain plug is generally located on either side of the engine near where the block bolts to the frame of the tiller. It can be a square headed plug or an allen socket head plug.

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SAE 5W-30 Engine Oil – 28 oz.
The Troy-Bilt Bronco Tiller uses a powerful 5 HP Tecumseh® engine to churn up loose, fertile soil with 10in.
A 208cc OHV Troy-Bilt engine gives you plenty of power to turn over large amounts of soil. Just One Hand™ operation allows the tiller to be guided with literally one hand thanks to a well-balanced and easy to control design.
You can use 10w30 instead of 5w30 oil since both meet the SAE standard for viscosity at operating temperatures. Generally, the viscosity difference between the two is neglectable. However, it`s important to note that a 10w30 oil will move slower than a 5w30 oil in cold environments.
Can I Use 5W-30 Instead Of SAE 30? Both oils have a “30” hot viscosity rating. This means SAE 5W-30 oil has the same flow rate as SAE 30 at operating temp. So, technically it`s fine to use SAE 5W-30 oil in place of SAE 30.
Powered by a Briggs & Stratton 140cc EX 550 Series™ Engine.
You might also be interested to know that Troy-Bilt has been manufacturing gas-powered yard equipment since 1937, and the company has a solid reputation for producing reliable small engines. In addition, all of these models come with a three-year warranty.
Consider this: A typical 5-ft rotary tiller with four tines can be run by a 25-hp tractor and the same 5-ft rotary tiller with six tines would need a 31-hp tractor to operate the tiller at peak performance.
Troy-Bilt® is headquartered in Valley City, Ohio, and our reliable equipment includes select products that are designed, built and tested right here in the U.S. – from Ohio and Mississippi to Tennessee and Arizona.
Engine Maintenance

Because your tiller operates in dust and dirt, oil and filter changes are more critical than for lawn mowers and most other lawn and garden machines. At the very minimum, you should change the oil after 50 hours of use or at least once a year. If the oil looks dirty, change it more often.

What lubricant should be used in the tiller transmission case? In the past the rule was: For partial fill-ups (a few ounces or less) use SAE 140, SAE 85W-140 or SAE 80W-90 weight gear oil with an API rating of GL-4 or GL-5. For full replacement use SAE 140 or SAE 85W-140 gear oil with an API rating of GL-4 only.
Honda 10W30 4-Cycle Engine Oil (1 Quart)
SAE 30, mineral oil based engine oil. A mineral oil based engine oil for 4-stroke engines. The oil is based on paraffin base oils that are characterised by high viscosity index, excellent oxidation stability and high lubricity. The oil`s special formula is designed to withstand high temperatures and rev counts.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

TROYBILT BRONCO REAR TINE TILLER Model#21A643B066…HOW DO I CHANGE MY ENGINE OIL?…WHERE IS THE DRAIN PLUG LOCATED?
ANSWER : The drain plug is generally located on either side of the engine near where the block bolts to the frame of the tiller. It can be a square headed plug or an allen socket head plug.

Tines wont turn
ANSWER : Without really knowing what is broken it will be tough to give a firm idea of the cost. However, you can head over to www.partstree.com. They have a great detailed parts break down and costs associated with it. Looked up your part numer and can find at this link: http://www.partstree.com/parts/?lc=mtd&mn=210-031-000+%281990%29

Tines won’t turn
ANSWER : Possible broken key where crankshaft meets gearbox.

DRAINED GAS FOR WINTER IN CRAFTASMAN REAR TINE TILLER. PUT GAS IN WOULDN’T START. SO PUT GAS IN CARBURETOR, WOULD START BUT DIED AS SOON AS USED UP GAS. TRIED SEVERAL TIMES. SAME THING. IT’S LIKE IT ISN’T PULLING THE GAS UP FROM THE GAS TANK.
ANSWER : You drained the fuel but sounds like you did not run fuel out of carb. the carb is probably just clogged either take off carb and clean thoroughly or just try to take off the screw on the float bowl and clean it there are little holes on it that are most likely plugged up. Good Luck…

Need parts for sears 917.299858 shield,tine no longer available at sears
ANSWER : Then no longer available… need to rethink your need for this tiller

My tiller rear tines are rubbing against inside metal. It appears the tines shaft bar has slide to one side. Unable to move back. Any ideas how to fix
ANSWER : Open the center case and check the roll pin inside

Rear tiller won’t go into gear.belt needs replacing
ANSWER : Find your model number from the list on this link and click to get your manual

http://www.managemyhome.com/mmh/owner_manuals/search?query=Craftsman+rear+tine+tiller

Will not start
ANSWER : Power lost when start to till