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Troy-Bilt TB42 Support Question

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Question posted by mike2670 on August 5th, 2022

High Rpms

my lawnmower, Troy-bilt tb42 with a 420cc Briggs and Stratton was dieing after 15 minutes or less. Long story short, after I replaced the carburetor, the engine now races. The only way to get it to run somewhat normally is with the throttle in the choke position. Any help is greatly appreciated.

Current Answers

Answer #1: Posted by Azas132 on December 7th, 2022 1:42 PM
Azas132

Member since:
November 15th, 2022

Points: 1,310
100
points
Intake leaks, to much air geting after carburetor, check caburetor gasket where it bolts to cylinder or engine block. And there might be a chance that you got a faulty caburator

Related Troy-Bilt TB42 Manual Pages

Operation Manual - Page 1

...engine. Unit may also be used during this time. Starting The Unit Primer Bulb Choke Lever Electric Starter or Power Start Bit Optional! This unit has an alternate starting position. 9 SQUEEZE and HOLD throttle for 30-60 seconds to warm up . Run...11/11 NEED HELP? English - Page 1 Operator's Manual TB42 BC 2-Cycle Trimmer Removing Unit From Carton 1 Remove all contents...
Operation Manual - Page 2

...replacement, ask your state or local authorities for regulations pertaining to wear eye protection. WHILE OPERATING • Wear safety glasses or goggles that are recommended. • Wear heavy, long pants, boots and gloves. Long...way. Move the unit at high speed when the unit is not in use them these instructions before starting the engine... for a short time. •...50 feet (15 m) radius...
Operation Manual - Page 3

... with a finger. NOTE: The holes in the top and middle clamp will be preinstalled. Fig. 1 6. It can result in place. The housing remains hot for a short time even after the unit is secure. Remove the Cutting Attachment 1. While holding the upper shaft housing, pull the lower shaft housing straight out of...
Operation Manual - Page 4

... state and local regulations. NOTE: Do not overfill the tank. 3. Replace the blade. Align the shaft bushing hole with the locking rod slot ...nut and blade together for 30 to turn Counterclockwise Fig. 15 WARNING: To avoid serious personal injury or damage to .... 19) and run the engine dry before fueling the unit • Drain the tank and run the unit for air-cooled engines MIXING RATIO -...
Operation Manual - Page 5

...; Keep the cutting head parallel to replace the trimming line: • Wind ...cutting power and is too long. Blade thrust can result ... from : • Entanglement with the engine running . Always use original equipment manufacturer 0.105...cut material with foreign matter • Normal line fatigue • Attempting to the... spark arrestor, muffler, carburetor, etc. These procedures should...
Operation Manual - Page 6

...engine and run until snug. 0.025 in Canada) for any high quality motor oil or 2- Release the throttle trigger and let the engine idle. Turn the idle speed screw clockwise 1/8 of the oil from the carburetor. 3. REPLACING THE SPARK PLUG Use replacement... a torque wrench torque to start the unit using one minute to warm up. Short Term Storage (1-2 weeks) 1. Store the unit in .&#...

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